CN104089851A - Method for testing continuous distribution of crystal density based on density gradient light transmittance method - Google Patents
Method for testing continuous distribution of crystal density based on density gradient light transmittance method Download PDFInfo
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Abstract
The invention discloses a method for quickly measuring the continuous distribution of crystal density of an energetic material. Crystal samples are naturally settled down and stabilized at different positions of a density gradient tube according to a density difference by using the density gradient tube, and the liquid densities of the crystal samples at different heights are calibrated and corrected through standard density floaters; then a light source generator and a light source detector which are mounted on two sides of the density gradient tube perform synchronous up-and-down scanning and data acquisition; a relation curve between the light transmittance and the height is calculated according to the light intensity differences of different heights and different regions, so that a continuous density distribution curve of the crystal samples is accurately calculated. Therefore, the density distribution situations of different crystal samples are judged. The method disclosed by the invention is used for quickly measuring the continuous distribution of the crystal density of the similar energetic materials, and the quantity of the samples under all density gradients is quantitatively expressed; the quantitative test on the density distribution of crystal particles is realized.
Description
Technical field
Embodiments of the present invention relate to energetic material field, and more specifically, embodiments of the present invention relate to a kind of method based on density gradient light transmittance ratio method test crystalline density continuous distribution
Background technology
Density is the important physical property index of solid particulate materials, and its value size depends on that the material of material forms and inner constructional form, can directly affect the usability of material.For energetic material, crystal grain density not only affects the detonation energy of explosive and propellant, but also closely related with their security performance.The research of high-performance weapons and ammunitions has proposed active demand for the high-acruracy survey of energetic material crystal grain density and Density Distribution.
Crystal grain density is a parameter with statistical significance, is mainly subject to the defective effects such as crystals solvent contains, micropore, crackle, dislocation.Generally speaking, the crystal that same composition material forms, density is lower, and wherein solvent contains, even the matter crystal internal defect such as lattice imperfection is also just more for hole, crackle, and security performance is poorer, as HMX, RDX crystal grain density differ 0.001g/cm
3, shock sensitivity changes 10%～20%.Therefore, the particle density of Accurate Determining energetic material is significant to explosive crystal quality sign and security performance prediction.Yet, blasting explosive secure performance is had the greatest impact wherein crystal defect is more often, the small part crystal that density is lower, therefore average explosive crystal density is difficult to the security performance of accurate response explosive crystal, only has the distribution situation of grasping explosive density that reliable support could be provided for the development of high-performance weapons and ammunitions.
At present, the method for density of solid particles test mainly contains liquid specific gravity bottle method, gas density method, sedimentation floatation and density gradient method.Tintometry and gas density method can only obtain the average density of sample, and this method degree of accuracy is low and cannot describe the Density Distribution situation of particle; Sedimentation floatation is by testing sample sedimentation flotation repeatedly in the liquid of different densities, washing and filtering, dry constant weight, finally obtain the mass distribution of the sample under different densities, this method can be described the Density Distribution of sample to a certain extent, but test process is loaded down with trivial details, length consuming time, labour intensity is large, and source of error is many, is difficult to draw accurate, complete, a continuous density profile; Density gradient method is a kind of new method that can rapid and accurate determination explosive crystal density, but tester can only pass through the distribution of visual observations sample in density gradient column, be difficult to the sample size under each density of quantitatively characterizing, cannot carry out fast particle density distribution quantitative test.Therefore, also do not set up both at home and abroad real particle density distribution quantitative measuring method, can't be as testing graininess accurate Drawing particle density continuous distribution curve.Study and a kind ofly can characterize the sample size under each density by fast quantification, the method that obtains continuous density distribution curve seems particularly urgent.
Summary of the invention
The present invention has overcome the deficiencies in the prior art, and a kind of accurate Fast Measurement energetic material crystalline density continuous distribution is provided, and the sample size under each density of quantitatively characterizing, carries out particle density distribution quantitative test fast, obtains the method for density profile.
For solving above-mentioned technical matters, one embodiment of the present invention by the following technical solutions:
A method based on density gradient light transmittance ratio method test crystalline density continuous distribution, comprises following steps:
The crystal prototype identical with kind of crystalline to be measured of A, compound concentration difference and continuous distribution, measure respectively the visible light transmittance rate of the crystal prototype of variable concentrations, obtain the transmittance-concentration curve of crystal prototype, according to the volume of crystal prototype, transmittance-concentration curve is converted into transmittance-mass content curve;
B, preparation density weigh equally distributed density gradient column continuously and under presenting gently;
C, take crystal prototype to be measured, the upper surface that it is slowly added to density gradient column, makes it naturally sink down into the stable position stopping in density gradient column with its equal density;
D, to density gradient column, drop into even density glass ball float spaced apart, treat that it sinks down into the stable position stopping in density gradient column with its equal density naturally;
E, at former and later two forms of density gradient column, light source and light intensity receiving trap are installed respectively, open after light source makes its light see through density gradient column and received by light intensity receiving trap, measure the transmittance of density gradient column differing heights, thereby obtain the transmittance-altitude curve of crystal prototype to be measured in density gradient column; Utilize glass ball float light to be absorbed to the characteristic signal producing, every the glass ball float of take produces the centre position absorbing and highly the density of density gradient column differing heights is demarcated as it, obtains the density-altitude curve of density gradient column;
F, the transmittance-altitude curve of transmittance-mass content curve of steps A and step e is converted into the mass content-altitude curve of crystal prototype to be measured;
G, the mass content-altitude curve of the density-altitude curve of step e and step F is converted into mass content-densimetric curve, is the density continuous distribution curve of crystal prototype to be measured.
Steps A of the present invention is to adopt the crystal identical with kind of crystalline to be measured first to prepare transmittance-mass content curve of this crystal, then transmittance-mass content the curve library using it as this crystal, is used as database for carry out when same crystalloid is tested later.The detection method of transmittance is to adopt light source, light intensity to detect the density gradient column of the crystal that distributed equally.
Because this method is to measure the continuous distribution curve of crystalline density, therefore, when the different crystal prototype to be measured of configuration concentration or other identical type crystal prototype, the concentration of mentioning is actually the concentration of crystal suspending liquid.
According to one embodiment of the present invention, described density gradient column is single density gradient column.During with single density gradient column test crystalline density continuous distribution curve, crystal prototype to be measured and glass ball float all add in this root density gradient column and measure respectively correlation curve separately.
According to another embodiment of the invention, described density gradient column is density gradient array, and described density gradient array is interconnected, and the fluid density of each row same position is identical.During with density gradient array test crystalline density continuous distribution curve, glass ball float can be added in a density gradient column wherein, in other density gradient column, add crystal prototype to be measured and do not add glass ball float, measure respectively correlation curve separately.
Method of testing of the present invention requires the fluid density distribution range in density gradient column to cover the distributed area of crystal prototype density to be measured, and the intermediate value of this fluid density is positioned at the territory, areal concentration of crystal prototype density to be measured.If the density range of the liquid in density gradient column can not cover the density of crystal prototype to be measured completely, so just can not record crystalline density continuous distribution curve accurately, allowing the fluid density intermediate value of density gradient column be distributed in the territory, areal concentration of crystal prototype density to be measured is also in order to guarantee the accuracy of this method.
It is the uniform parallel beam of brightness or area source that the present invention is used for the light source of detection density gradient column transmittance, thereby or sensing range can in stepping move the zonule light beam that scans whole surveyed area.The surveyed area of parallel beam or area source is large, can the whole density gradient column of direct-detection, or the detection by the less zones of different of total detection number of times just can obtain the transmittance of whole density gradient column, and zonule light beam need to obtain through continuous detection the transmittance of whole density gradient column, in a word, no matter adopt which kind of light beam, all must guarantee to obtain the transmittance of whole density gradient column.
It is monochromatic light or white light that the present invention is used for the light source of detection density gradient column transmittance, and its spot size is not less than the maximum receiving area of light intensity receiving trap.Use colorama to be unfavorable for detecting accurately transmittance, if and spot size has been less than the maximum area of light intensity receiving trap, the hot spot signal that can cause light intensity receiving trap to can't detect hot spot signal or detect is inaccurate, finally causes the density profile of crystal prototype to be measured inaccurate.
According to one embodiment of the present invention, described light source and light intensity receiving trap are controlled and are moved up and down simultaneously by synchronous motor.The present invention can adopt polytype light source, such as small area light source, and this light source can not the whole density gradient column of disposable detection transmittance, and light source and light intensity receiving trap can be controlled them by synchronous motor and move up and down simultaneously, therefore light source is relative static with light intensity receiving trap, and both are continuous movings with respect to density gradient column, the transmittance of whole density gradient column therefore can be detected.
Preferably, described light intensity receiving trap is smart wire array CCD camera, intelligent CCD surface detector.Certainly, light intensity receiving trap of the present invention does not limit and these two kinds of equipment, and other visible-light detector also may meet service condition of the present invention.
The present invention is accurate in the light transmittance requirement detection data of test density gradient column, no matter what therefore use is smart wire array CCD camera or intelligent CCD surface detector or other visible-light detector, all require their pixel > 2048p, line scan rate >18000 line.
Because density float is used for demarcating the corresponding density of density gradient column differing heights, so require the Density Distribution of glass ball float even, interval is reasonable, otherwise the density-altitude curve of the density gradient column of demarcating there will be fracture or incomplete phenomenon, be unfavorable for follow-up coordinate conversion, thus the present invention to require the Density Distribution scope of described glass ball float be 1.490g/cm
3～2.110g/cm
3, the density difference between adjacent two glass ball floats of Density Distribution is 0.0045g/cm
3～0.0060g/cm
3, expanded uncertainty is not more than 0.0003g/cm
3.
Further technical scheme is, the height that the height of described glass ball float in density gradient column is every glass ball float by the centre position of the glass ball float characteristic signal that absorption produces to light.The transmittance of glass ball float and crystal prototype transmittance to be measured, density gradient column liquid transmittance is all not identical, therefore when it is carried out to the detection of characteristic signal, transmittance has equidistantly, shape is similar and quantity equates with known glass float quantity crest or trough, therefore can be by its characteristic signal from wherein separating, and because the hot spot of glass ball float is circular, therefore the centre position that adopts its hot spot is its height, the density corresponding with it is made density-altitude curve, because glass ball float is that nature sinks down into the stable position stopping in density gradient column with its equal density after adding density gradient column, therefore density-the altitude curve of glass ball float just can reflect the density of density gradient column differing heights.
Compared with prior art, one of beneficial effect of the present invention is: the present invention is simple to operate, on the basis of density gradient method, utilize light transmittance ratio method to analyze light printing opacity density continuous distribution explosive sample light absorbing state, thereby obtain the distribution curve of explosive crystal density, sample size under each density gradient of quantitatively characterizing, realizes the quantitative test to crystal grain Density Distribution.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of one embodiment of the present of invention.
Fig. 2 is device schematic diagram of the present invention.
Fig. 3 is glass ball float density and height calibration curve of the present invention.
Fig. 4 is the HMX explosive sample density profile of two parts of different crystal qualities of the present invention.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
Fig. 1 is the schematic flow sheet of one embodiment of the present invention, Fig. 1 left side obtains transmittance-mass content curved portion is the step that the present invention prepares database, and crystal prototype to be measured can record light intensity-altitude curve, and be converted into transmittance-altitude curve, then transmittance-altitude curve and transmittance-concentration curve can be converted into concentration-altitude curve, density-the altitude curve of this concentration-altitude curve and glass ball float can be converted into concentration-densimetric curve, according to the volume of crystal prototype to be measured, this concentration-densimetric curve can be converted into mass content-densimetric curve, this curve is exactly the density profile of crystal to be measured.
Fig. 2 is the device schematic diagram that the present invention detects transmittance, and wherein 101 is density gradient columns, the 102nd, and light source, the 103rd, light intensity receiving trap, the 104th, synchronous motor, the 105th, data analysis facilities.In density gradient column 101, be distributed with crystal prototype to be measured and density float, the visible ray that light source 102 penetrates is received and pass to data analysis facilities 105 at offside by light intensity receiving trap 103 through density gradient column 101 to carry out data analysis and obtains final curve, in testing process, synchronous motor 104 can control light source 102 and light intensity receiving trap 103 synchronously moves up and down, thereby reaches the object that detects whole density gradient column 101.
Embodiment 1
Testing sample type: HMX explosive crystal sample
(1) configure the HMX explosive sample of variable concentrations, measure the absorptance of its visible ray, obtain the calibration curve of transmittance and explosive sample concentration, then according to the volume of crystal prototype, transmittance-concentration curve is converted into transmittance-mass content curve; This step can only carried out first, after experimentation select the transmittance-concentration curve of corresponding explosive sample directly to use.Transmittance-mass content curve of some explosive crystal sample is existing, can be directly with reference to using, without measuring again.
(2) preparation can be measured the density gradient column array (totally 7 row) of many parts of HMX explosive sample density continuous distribution simultaneously, density gradient array is interconnected, the fluid density of each row same position is identical, and global density liquid lightness sensation in the upper and heaviness in the lower is uniformly distributed, and density range covers 1.885～1.915g/cm
3.
(3) utilize electronic balance to take HMX explosive sample to be measured, the upper surface that slowly adds density gradient array the 1st, 2,3,5,6,7 row after infiltrating with light liquid, it is slowly sunk, to stable, now HMX explosive sample to be measured disperses and stops in density gradient column the position with its equal density.
(4), from the glass ball float of having proofreaied and correct, get density and be respectively 1.9103g/cm
3, 1.9055g/cm
3, 1.9003g/cm
3, 1.8948g/cm
3, 1.8902g/cm
3glass ball float, after infiltrating with light liquid, put into successively the upper surface of density gradient array the 4th row of step (3), make it slowly sink down into transfixion, now glass ball float disperses and stops in density gradient column the position with its equal density.
(5) incandescent lamp bulb is placed in to the focus place of concave mirror, make light form parallel beam after concave mirror reflection, irradiate whole density gradient array, at opposite side, adopt smart wire array CCD camera (pixel >2048p, line scan rate >18000 line) each row of density gradient array are scanned from bottom to top, obtain light intensity that each row density gradient column sees through with the change curve of height, be then translated into the transmittance-altitude curve of HMX explosive sample to be measured.Utilize glass ball float light to be absorbed to the characteristic signal producing, take and produce the height that the centre position of absorption is every glass ball float, with its density, to highly mapping, can obtain the linear relationship (as shown in Figure 3) of density and height.From figure, can obtain height-densimetric curve (both meet linear relationship ρ=2.01734+8.661E-4*H, linearly dependent coefficient R=0.9992, ρ represents density, H represents to take the height that density gradient column bottom is reference, E represents 10
-5), thereby can obtain the density of optional position in density gradient column.
(6) transmittance-altitude curve of transmittance-mass content curve of step (1) and step (5) is carried out to coordinate conversion and obtain mass content-altitude curve.
(7) mass content-altitude curve of the height-densimetric curve of step (5) and step (6) is carried out to coordinate conversion and obtain mass content-densimetric curve, this mass content-densimetric curve is the density profile of HMX sample.
The density fluid that the present invention prepares density gradient column is zinc bromide aqueous solution, because the density fluid of density gradient column is presented light lower heavy continuous distribution, so zinc bromide solution density little (this area is called light liquid) of density gradient column upper end, the zinc bromide solution density large (this area is called heavy-fluid) of density gradient column lower end, when crystal prototype or glass ball float etc. is infiltrated, what use is light liquid, the zinc bromide aqueous solution that density is little.Infiltration is to produce bubble in order to prevent that explosive crystal or glass ball float etc. are dispersed in density gradient column, because the bubble producing can affect its density, such as meeting makes the density of glass ball float, diminishes, and affects test result.
Wherein the density profile of two of different crystal quality parts of HMX explosive samples as shown in Figure 3.In Fig. 3, solid line represents the low-quality HMX sample rate curve of inferior quality, and its Density Distribution is wider, and this HMX sample rate skewness is described, more containing defect in sample segment; Solid line represents the sample rate curve of high-quality HMX, can find out that most sample rates are all positioned at 1.8981～1.9003g/cm
3between, illustrating that the quality of crystal compares homogeneous, contained defect situation is also basically identical.From the contrast of two lines of Fig. 3, can clearly distinguish the HMX sample of different qualities.
Embodiment 2
Testing sample type: RDX explosive crystal sample
(1) configure the RDX explosive sample of variable concentrations, measure the absorptance of its visible ray, obtain the calibration curve of transmittance and explosive sample concentration, then according to the volume of crystal prototype, transmittance-concentration curve is converted into transmittance-mass content curve; This step can only carried out first, after experimentation select the transmittance-concentration curve of corresponding explosive sample directly to use.
(2) the single density gradient column of preparation density continuous distribution, the global density liquid in density gradient column is heavily uniformly distributed under presenting gently, and density range covers 1.885～1.915g/cm
3.
(3) utilize electronic balance to take RDX explosive crystal sample to be measured, the upper surface that slowly adds density gradient column after infiltrating with light liquid, it is slowly sunk, to stable, the brilliant sample dispersion of RDX explosive to be measured stop in density gradient column the position with its equal density now.
(4), from the glass ball float of having proofreaied and correct, get density and be respectively 1.8106g/cm
3, 1.8050g/cm
3, 1.8000g/cm
3, 1.7952g/cm
3, 1.7899g/cm
3glass ball float, after infiltrating with light liquid, put into successively the upper surface of the density gradient column of step (2), make it slowly sink down into transfixion, now glass ball float disperses and stops in density gradient column the position with its equal density.
(5) by a parallel beam shot densities gradient column bottom, at opposite side, adopt smart wire array CCD camera (pixel >2048p, line scan rate >18000 line) detect light beam and see through the light intensity after testing sample, light source and the motion of CCD camera synchronization, from bottom to top, progressively scan, obtain light intensity that density gradient column sees through with the change curve of height, be then translated into the transmittance-altitude curve of RXD explosive crystal sample to be measured.Utilize glass ball float light to be absorbed to the characteristic signal producing, the height that the centre position that the generation of take absorbs is every glass ball float, with its density to highly mapping, (both meet linear relationship ρ=1.78464+0.00106*H can to obtain the linear relationship of density and height, linearly dependent coefficient R=0.9992, ρ represents density, and H represents to take the height that density gradient column bottom is reference), thus the density of optional position in density gradient column can be obtained.
(6) transmittance-altitude curve of transmittance-mass content curve of step (1) and step (5) is carried out to coordinate conversion and obtain mass content-altitude curve.
(7) mass content-altitude curve of the height-densimetric curve of step (5) and step (6) is carried out to coordinate conversion and obtain mass content-densimetric curve, this mass content-densimetric curve is the density profile of RXD explosive crystal sample.
Embodiment 3
Testing sample type: CL-20 explosive crystal sample
(1) the CL-20 explosive crystal sample of configuration variable concentrations, measure the absorptance of its visible ray, obtain the calibration curve of transmittance and explosive sample concentration, then according to the volume of crystal prototype, transmittance-concentration curve is converted into transmittance-mass content curve; This step can only carried out first, after experimentation select the transmittance-concentration curve of corresponding explosive sample directly to use.
(2) the density gradient column array that preparation is measured for CL-20 explosive sample density continuous distribution, can measure the density continuous distribution of 12 parts of CL-20 samples simultaneously, density gradient array is interconnected, the fluid density of each row same position is identical, global density liquid lightness sensation in the upper and heaviness in the lower is uniformly distributed, and density range is not less than 2.015～2.050g/cm3.
(3) utilize electronic balance to take CL-20 explosive crystal sample to be measured, the upper surface that slowly adds each density gradient column in density gradient array after infiltrating with light liquid, it is slowly sunk, to stable, CL-20 explosive crystal sample dispersion to be measured stop in density gradient column the position with its equal density now.
(4), from the glass ball float of having proofreaied and correct, get density and be respectively 2.0451g/cm
3, 2.0393g/cm
3, 2.0347g/cm
3, 2.0254g/cm
3, 2.0205g/cm
3glass ball float, after infiltrating with light liquid, put into successively the upper surface of the density gradient array middle column of step (3), make it slowly sink down into transfixion, now glass ball float disperses and stops in density gradient column the position with its equal density.
(5) parallel beam is irradiated to whole density gradient array, at opposite side, adopt smart wire array CCD camera (pixel >2048p, line scan rate >18000 line) measure light intensity that each row density gradient column sees through with the change curve of height, be then translated into the transmittance-altitude curve of CL-20 explosive crystal sample to be measured.Utilize glass ball float light to be absorbed to the characteristic signal producing, take and produce the height that the centre position of absorption is every glass ball float, with its density, to highly mapping, can obtain the linear relationship (as shown in Figure 3) of density and height.From figure, can obtain height-densimetric curve (both meet linear relationship ρ=2.01734+8.661E-4*H, linearly dependent coefficient R=0.9992, ρ represents density, H represents to take the height that density gradient column bottom is reference, E represents 10
-5), thereby can obtain the density of optional position in density gradient column.
(6) transmittance-altitude curve of transmittance-mass content curve of step (1) and step (5) is carried out to coordinate conversion and obtain mass content-altitude curve.
(7) mass content-altitude curve of the height-densimetric curve of step (5) and step (6) is carried out to coordinate conversion and obtain mass content-densimetric curve, this mass content-densimetric curve is the density profile of HMX sample.
Although with reference to a plurality of explanatory embodiment of the present invention, invention has been described here, but, should be appreciated that, those skilled in the art can design a lot of other modification and embodiments, and these are revised and within embodiment will drop on the disclosed principle scope and spirit of the application.More particularly, in the scope of, accompanying drawing open in the application and claim, can carry out multiple modification and improvement to the building block of subject combination layout and/or layout.Except modification that building block and/or layout are carried out with improving, to those skilled in the art, other purposes will be also obvious.
Claims (10)
1. based on density gradient light transmittance ratio method, test a method for crystalline density continuous distribution, it is characterized in that comprising following steps:
The crystal prototype identical with kind of crystalline to be measured of A, compound concentration difference and continuous distribution, measure respectively the visible light transmittance rate of the crystal prototype of variable concentrations, obtain the transmittance-concentration curve of crystal prototype, according to the volume of crystal prototype, transmittance-concentration curve is converted into transmittance-mass content curve;
B, preparation density weigh equally distributed density gradient column continuously and under presenting gently;
C, take crystal prototype to be measured, the upper surface that it is slowly added to density gradient column, makes it naturally sink down into the stable position stopping in density gradient column with its equal density;
D, to density gradient column, drop into even density glass ball float spaced apart, treat that it sinks down into the stable position stopping in density gradient column with its equal density naturally;
E, at former and later two forms of density gradient column, light source and light intensity receiving trap are installed respectively, open after light source makes its light see through density gradient column and received by light intensity receiving trap, measure the transmittance of density gradient column differing heights, thereby obtain the transmittance-altitude curve of crystal prototype to be measured in density gradient column; Utilize glass ball float light to be absorbed to the characteristic signal producing, every the glass ball float of take produces the centre position absorbing and highly the density of density gradient column differing heights is demarcated as it, obtains the density-altitude curve of density gradient column;
F, the transmittance-altitude curve of transmittance-mass content curve of steps A and step e is converted into the mass content-altitude curve of crystal prototype to be measured;
G, the mass content-altitude curve of the density-altitude curve of step e and step F is converted into mass content-densimetric curve, is the density continuous distribution curve of crystal prototype to be measured.
2. the method based on density gradient light transmittance ratio method test crystalline density continuous distribution according to claim 1, it is characterized in that described density gradient column is single density gradient column or density gradient array, described density gradient array is interconnected, and the fluid density of each row same position is identical.
3. the method based on density gradient light transmittance ratio method test crystalline density continuous distribution according to claim 1, it is characterized in that the fluid density distribution range in described density gradient column covers the distributed area of crystal prototype density to be measured, the intermediate value of this fluid density is positioned at the territory, areal concentration of crystal prototype density to be measured.
4. the method based on density gradient light transmittance ratio method test crystalline density continuous distribution according to claim 1, it is characterized in that described light source is the uniform parallel beam of brightness or area source, thereby or sensing range can in stepping move the zonule light beam that scans whole surveyed area.
5. the method based on density gradient light transmittance ratio method test crystalline density continuous distribution according to claim 1, is characterized in that described light source is monochromatic light or white light, and its spot size is not less than the maximum receiving area of light intensity receiving trap.
6. the method based on density gradient light transmittance ratio method test crystalline density continuous distribution according to claim 1, is characterized in that described light source and light intensity receiving trap controlled and moved up and down simultaneously by synchronous motor.
7. the method based on density gradient light transmittance ratio method test crystalline density continuous distribution according to claim 1, is characterized in that described light intensity receiving trap is smart wire array CCD camera, intelligent CCD surface detector.
8. the method based on density gradient light transmittance ratio method test crystalline density continuous distribution according to claim 7, the pixel > 2048p that it is characterized in that described smart wire array CCD camera, intelligent CCD surface detector, line scan rate >18000 line.
9. the method based on density gradient light transmittance ratio method test crystalline density continuous distribution according to claim 1, the Density Distribution scope that it is characterized in that described glass ball float is 1.490g/cm
3～2.110g/cm
3, the density difference between adjacent two glass ball floats of Density Distribution is 0.0045g/cm
3～0.0060g/cm
3, expanded uncertainty is not more than 0.0003g/cm
3.
10. the method based on density gradient light transmittance ratio method test crystalline density continuous distribution according to claim 1, is characterized in that the height that the height of described glass ball float in density gradient column is every glass ball float by the centre position of the glass ball float characteristic signal that absorption produces to light.
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| CN106383098A (en) * | 2016-02-01 | 2017-02-08 | 北京朗迪森科技有限公司 | Detection method and apparatus for stability of liquid sample |
| CN111150401A (en) * | 2019-12-30 | 2020-05-15 | 浙江大学 | Method for measuring tissue thickness by detecting emergent light intensity |
| CN111426641A (en) * | 2019-01-09 | 2020-07-17 | 国家纳米科学中心 | Method for detecting density distribution state of nano material |
| WO2023135712A1 (en) * | 2022-01-13 | 2023-07-20 | 株式会社日立製作所 | Particle beam analysis device and particle beam analysis method |
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| CN106383098A (en) * | 2016-02-01 | 2017-02-08 | 北京朗迪森科技有限公司 | Detection method and apparatus for stability of liquid sample |
| CN106323809A (en) * | 2016-11-07 | 2017-01-11 | 浙江师范大学 | Device for determining density continuous distribution of uniform-thickness transparent high polymer product |
| CN111426641A (en) * | 2019-01-09 | 2020-07-17 | 国家纳米科学中心 | Method for detecting density distribution state of nano material |
| CN111426641B (en) * | 2019-01-09 | 2024-04-09 | 国家纳米科学中心 | Method for detecting density distribution state of nano material |
| CN111150401A (en) * | 2019-12-30 | 2020-05-15 | 浙江大学 | Method for measuring tissue thickness by detecting emergent light intensity |
| WO2023135712A1 (en) * | 2022-01-13 | 2023-07-20 | 株式会社日立製作所 | Particle beam analysis device and particle beam analysis method |
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