CN115639229A - Neutron imaging spectrometer with multi-capillary convergent lens and imaging method thereof - Google Patents
Neutron imaging spectrometer with multi-capillary convergent lens and imaging method thereof Download PDFInfo
- Publication number
- CN115639229A CN115639229A CN202211645857.XA CN202211645857A CN115639229A CN 115639229 A CN115639229 A CN 115639229A CN 202211645857 A CN202211645857 A CN 202211645857A CN 115639229 A CN115639229 A CN 115639229A
- Authority
- CN
- China
- Prior art keywords
- neutron
- capillary
- lens
- convergent lens
- convergent
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Landscapes
- Analysing Materials By The Use Of Radiation (AREA)
Abstract
The invention relates to a neutron imaging spectrometer of a multi-capillary convergent lens and an imaging method thereof.A quasi-parallel neutron beam is emitted from a rectangular outlet of a neutron source and reaches the inlet end of the multi-capillary convergent lens through a beam limiting hole, the neutron is subjected to multiple total reflections on the inner surface of a microchannel of the multi-capillary convergent lens and finally converged at the focal point of the lens, then is diverged along the propagation direction of the neutron beam, penetrates through a sample to be detected on a sample platform, then is captured by a scintillation screen and converted into an optical signal, and the optical signal is reflected by a 45-degree reflector and then is recorded by an image collector. The invention utilizes the multi-capillary convergent lens to regulate the quasi-parallel neutron beam into a focal spot with the size smaller than 150um, and utilizes the convergence and subsequent divergence characteristics of the focal beam to irradiate a sample to be measured at a certain distance behind the focal point of the lens to obtain an amplified transmission projection image of the sample.
Description
Technical Field
The invention relates to a neutron imaging spectrometer with a multi-capillary convergent lens and an imaging method thereof, belonging to the technical field of radiographic nondestructive testing.
Background
Conventional neutron radiography systems generally include a neutron source, a collimator, a sample stage, a scintillation screen, an imaging system, and radiation shielding material. The neutron beam from the neutron source penetrates through the sample after being collimated by the collimator, the transmission neutrons generate spatial distribution with different intensity and are projected to the neutron scintillation screen, the space distribution and the neutron scintillation screen react with neutron conversion substances of the neutron scintillation screen to generate charged particles, then the charged particles react with fluorescent substances of the neutron scintillation screen to generate visible light, and finally the visible light is recorded by a neutron camera to convert the internal structure of the material into a transmission projection image.
The imaging resolution is one of important performance indexes of a neutron photography system, the minimum detail of a sample to be detected which can be distinguished is determined, and the improvement of the imaging resolution has important significance for effectively utilizing the neutron photography technology. The imaging resolution is mainly related to the scintillation screen and the neutron camera of the neutron photography system.
Neutrons are strong, uncharged subatomic particles that do not cause ionization of matter and do not interact nearly with extra-nuclear electrons. The detection of neutrons is therefore often achieved by the detection of secondary particles produced by the interaction of the neutrons with the nuclei. The main function of the scintillation screen is to convert neutrons into visible light to be received and imaged by a detection system, and the performance of the scintillation screen has a direct influence on imaging resolution. Composed of hydrogen-rich material (polyethylene, polypropylene, epoxy resin, etc.) and fluorescent material (mostly ZnS (Ag) or Gd) 2 S 2 O fluorescent material) is a type of scintillation screen with better imaging resolution at present, and the imaging resolution is about 0.5 mm. However, such a scintillator screen is not transparent, and has a serious photon self-absorption phenomenon, so that the thickness of the scintillator screen is in the millimeter order, which results in low detection efficiency. The consideration of both detection efficiency and low gamma background noise interference while maintaining high imaging resolution is a popular research problem in the field of scintillation screen design.
In the current neutron imaging camera, the size of each pixel of the traditional CCD camera is usually less than 10um, or between 10 and 20um, and the traditional CCD camera has high spatial resolution and does not have a time resolution function. The newly developed neutron detector in China has the size of 55 multiplied by 55um per pixel 2 Although thoughThe spatial resolution is not as good as a conventional CCD camera but has a high temporal resolution, meaning that the corresponding wavelength of each neutron can be acquired using the neutron time-of-flight method. Smaller pixel sizes present higher challenges to the camera fabrication process.
Disclosure of Invention
Conventional neutron radiography systems are equipped with collimators for confining the beam of the neutron beam extracted by the neutron source so as to match the incident neutron beam with corresponding features at the rear end of the neutron source extraction opening. Conventional neutron radiography systems provide quasi-parallel neutron beams. In the invention, the multi-capillary convergent lens is added behind the collimator, so that quasi-parallel neutron beams can be converged at the focal point of the lens, the focal spot intensity is in two-dimensional Gaussian distribution, and the convergent beam convergence and subsequent divergence characteristics are utilized to realize amplified imaging of a sample to be detected, thereby improving the imaging resolution.
The neutron imaging spectrometer of the multi-capillary convergent lens comprises a neutron beam system, a sample stage, an imaging system and a control system;
the neutron beam system comprises a quasi-parallel neutron beam, a rectangular lead-out opening, a beam limiting hole and a multi-capillary convergent lens;
the imaging system comprises a flicker screen, a 45-degree reflector and an image collector;
the control system comprises a stepping motor controller and a computer;
the rectangular leading-out port, the beam limiting hole, the multi-capillary converging lens, the sample stage, the scintillation screen, the 45-degree reflector and the image collector are sequentially distributed along the path of the neutron beam;
the multi-capillary convergent lens is arranged on a five-dimensional electric adjusting table;
the five-dimensional electric adjusting table is sequentially connected with the stepping motor controller and the computer;
the image collector is connected with the computer.
The quasi-parallel neutron beam has divergence of +/-6 mrad, frequency of 25Hz and a median wave band of 1 to 12A;
the size of the rectangular outlet is 36 multiplied by 40mm 2 ；
The diameter of the beam limiting hole is 20mm, and the beam limiting hole is arranged at the rectangular outlet;
hairy furThe capillary convergent lens comprises 40 to 80 ten thousand hollow circular micro channels which are tightly arranged in a hexagon shape; the outline of the lens is parabolic; the diagonal dimension of the inlet end is 10 to 20mm, the diagonal dimension of the outlet end is 8 to 10mm, and the back focal lengthf10 to 30mm. The multi-capillary convergent lens has a large neutron receiving area, and can regulate quasi-parallel beams incident to the lens into convergent neutron beams.
The absorption sheet fixes the multi-capillary convergent lens in an aluminum sleeve, and the aluminum sleeve is fixed in a buckle above the five-dimensional electric adjusting table.
The aluminum sleeve is made of aluminum alloy, is cylindrical and hollow, has a length of 80mm and is close to the length of the multi-capillary convergent lens, and has an inner diameter of 12 to 24mm and a thickness of 2mm. The outer diameter of the absorption sheet is consistent with the inner diameter of the aluminum sleeve, so that seamless connection is ensured, and redundant neutrons are prevented from transmitting to an imaging area; the inner diameter is determined according to the inlet end diagonal dimension and the outlet end diagonal dimension of the polycapillary converging lens.
The material of the scintillation screen is usually 6 LiF/ZnS or GOS (Gd) 2 O 2 S（Tb/ 6 LiF））。
The image collector is a neutron camera, and can select a CCD camera only having a space resolution function or other neutron detectors having a time resolution function and a space resolution function.
The imaging method of the neutron imaging spectrometer with the multi-capillary convergent lens comprises the following steps:
quasi-parallel neutron beams are emitted from a rectangular lead-out port of a neutron source and reach the inlet end of the multi-capillary convergent lens through the beam limiting hole, the neutrons are subjected to multiple total reflections on the inner surface of a micro-channel of the multi-capillary convergent lens and finally converged at the focus of the multi-capillary convergent lens, then are diverged along the propagation direction of the neutron beams, penetrate through a sample to be detected on a sample platform, are captured by a scintillation screen and are converted into optical signals, and the optical signals are recorded by an image collector after being reflected by a 45-degree reflector.
The technical scheme of the invention has the following beneficial effects:
quasi-parallel neutron beams emitted by a neutron source can form a focal spot with the size smaller than 150um through the regulation and control of a multi-capillary convergent lens, and a sample to be measured at a certain distance behind the focal point of the lens can be irradiated to obtain an amplified transmission projection image of the sample by utilizing the convergence and subsequent divergence characteristics of the focused beams. The magnification factor is about 1.5 to 3 times, and the distance between the multi-capillary convergent lens and a sample to be measured can be properly adjusted.
On the basis of the traditional neutron photography system, the invention improves the effective spatial resolution of the imaging system by improving the geometric light path, and the imaging analysis of the fine structure of some small-size samples and large samples becomes possible. The imaging spectrometer can be widely applied to microstructure measurement in the fields of biology, materials, industry, agriculture, archaeology and the like, so that the application of the traditional neutron photography technology is widened.
Drawings
FIG. 1 is a schematic diagram of a neutron imaging spectrometer device with a polycapillary converging lens of the present invention;
FIG. 2a is a first assembly configuration of a polycapillary converging lens of the present invention;
FIG. 2b is a second assembly configuration of a polycapillary converging lens of the present invention;
FIG. 3a is a microchannel arrangement of a polycapillary converging lens of the present invention;
FIG. 3b is a profile of a polycapillary converging lens of the present invention;
FIG. 4a is a schematic diagram illustrating the principle of total internal reflection of the molecule according to the present invention;
FIG. 4b is a schematic diagram of the principle of a polycapillary convergent lens of the present invention modulating neutrons;
FIG. 5 is a schematic diagram of the magnified imaging principle of the multi-capillary tube converging lens based on the invention.
Detailed Description
The specific technical scheme of the invention is explained by combining the attached drawings.
As shown in fig. 1, the neutron imaging spectrometer of the multi-capillary convergent lens mainly comprises a neutron beam system, a sample stage, an imaging system and a control system. The imaging spectrometer is designed for a BL20 neutron measurement chamber of a China Spallation Neutron Source (CSNS).
The neutron beam system comprises a quasi-parallel neutron beam from a CSNS line station, a rectangular extraction port 1, a beam limiting hole 2 and a multi-capillary convergent lens 3;
the imaging system comprises a scintillation screen 6, a 45-degree reflector 7 and an image collector 8;
the control system comprises a stepping motor controller 9 and a computer 10;
the rectangular leading-out port 1, the beam limiting hole 2, the multi-capillary convergent lens 3, the sample stage 5, the scintillation screen 6, the 45-degree reflector 7 and the image collector 8 are distributed in sequence along the path of the neutron beam;
the multi-capillary convergent lens 3 is arranged on a five-dimensional electric adjusting table 4;
the five-dimensional electric adjusting table 4 is sequentially connected with a stepping motor controller 9 and a computer 10;
the image collector 8 is connected to a computer 10.
The diameter of the beam limiting hole 2 is 20mm, and the beam limiting hole is arranged at the rectangular leading-out port 1.
Quasi-parallel neutron beams are emitted from a rectangular lead-out port 1 of a neutron source and reach an inlet end of a multi-capillary convergent lens 3 through a beam limiting hole 2, the neutrons are subjected to multiple total reflections on the inner surface of a micro-channel of the multi-capillary convergent lens 3 and finally converged at a lens focus, and then are diverged along the propagation direction of the neutron beams, and are captured by a scintillation screen 6 and converted into optical signals after penetrating through a sample to be detected on a sample table 5, and the optical signals are recorded by an image collector 8 after being reflected by a 45-degree reflector 7.
Quasi-parallel neutron beams with wavelength range of 1 to 12A and divergence of +/-6 mrad and a rectangular lead-out port 1 are separated from each other at 25Hz frequency and have the size of 36 multiplied by 40mm 2 And is discharged from the rectangular outlet 1.
The beam limiting hole 2 can be made of materials such as boron carbide and the like with large neutron acting cross section. In the scheme of the invention, the device is arranged at a rectangular lead-out port 1. Because the size of the rectangular leading-out port 1 is larger than that of the inlet end face of the multi-capillary convergent lens 3, the beam limiting hole needs to be added to enable the size of the beam to be matched with that of the inlet end face of the multi-capillary convergent lens 3, the lighting area is ensured to just cover the inlet end face of the multi-capillary convergent lens 3, and meanwhile, the influence of scattered neutrons on an imaging result can be reduced to the greatest extent.
The five-dimensional electric adjusting table 4 is mainly used for calibrating the light path and adjusting the relative position of the multi-capillary converging lens 3 and a sample to be measured placed on the sample table 5. In detail, the light path calibration means adjusting the symmetry axis of the multi-capillary convergent lens 3 to coincide with the beam center line of the quasi-parallel neutron beam, and the light path calibration means adjusting the beam center line by using the five-dimensional adjusting table 4 after the green guide laser is roughly aligned with each component.
The five-dimensional electric adjusting table 4 comprises X, Y and Z three-dimensional orthogonal translation and U and V two-dimensional angular rotation (rotation and pitching are respectively controlled). The computer 10 may remotely control the position of the polycapillary converging lens 3 via a stepper motor controller 9 connected to the five-dimensional motorized adjustment stage 4.
As in fig. 2a and 2b, the mounting and positioning of the polycapillary convergent lens 3 is achieved by means of an aluminium sleeve 32 fitted with an absorbing sheet 31: the multicapillary converging lens 3 is fixed in an aluminium sleeve 32 by means of an absorbing plate 31, and subsequently the aluminium sleeve 32 is fixed in a snap over the five-dimensional motorized adjustment stage 4. The snap-fit design facilitates the mounting and dismounting of the multi-capillary convergent lens 3. The absorbing sheet 31 is made of boron carbide or the like.
The aluminum sleeve 32 is made of aluminum alloy, is cylindrical and hollow, has a length of 80mm and is close to the length of the multi-capillary convergent lens 3, and has an inner diameter of 12 to 24mm and a thickness of 2mm. The outer diameter of the absorption sheet 31 is consistent with the inner diameter of the aluminum sleeve 32, so that seamless connection is ensured, and redundant neutrons are prevented from being transmitted to an imaging area; the inner diameter is determined according to the inlet end diagonal dimension and the outlet end diagonal dimension of the polycapillary converging lens 3.
The sample stage 5 is used for placing a sample to be measured, and in the scheme of the invention, the sample stage is fixed, and the distance between the multi-capillary convergent lens 3 and the sample to be measured is changed by moving the position of the multi-capillary convergent lens along the direction of the symmetry axis, so that the magnification factor is adjustedM. Of course, the sample stage 5 may also be set in a position adjustable mode, such as a three-dimensional motorized stage or other type of stage, depending on the experimental requirements.
The scintillation screen 6 has the function of converting neutrons into a fluorescent signal, typically 6 LiF/ZnS and GOS (Gd) 2 O 2 S（Tb/ 6 LiF) Etc.).
The fluorescence signal from the scintillation screen 6 is reflected by a 45 deg. mirror 7 and deflected by 90 deg. and subsequently received by an image collector 8. Scattered neutrons and high-energy gamma rays are not reflected by the 45-degree reflector 7, so that the image collector 8 can be prevented from being directly exposed to the irradiation environment due to the design, and the service life of the image collector can be prolonged.
The image collector 8 is used for receiving the fluorescence signal and outputting a transmission projection image of the sample at the end 10 of the computer, and is matched with a scintillation screen and a 45°The reflector is used, and the three components form the imaging system of the spectrometer. The imaging system is also equipped with an image intensifier compatible with the fluorescence wavelength, according to the range of the fluorescence signal wavelength converted by the scintillation screen 6. In order to avoid background interference on imaging caused by natural light and scattered neutrons, the imaging system of the spectrometer is packaged in a dark box. The imaging system can be fixed and fixed, and can also be designed to be in a translation mode: the bottom of the camera bellows is provided with a three-dimensional orthogonal translation electric translation table which is controlled by a computer 10 through a stepping motor controller 9. The parameters of the image collector 8 are adjustable by the computer 10.
The image collector 8 is a neutron camera, and a CCD camera or other types of cameras can be selected.
The multi-capillary convergent lens 3 adopted by the invention is made of silicate glass or lead glass, can regulate and control quasi-parallel neutron beams into convergent neutron beams, and has the structural characteristics that: usually consists of 40 to 80 ten thousand hollow circular micro-channels, and the inner diameter of each micro-channeldAbout 10um in a hexagonal close packing, as in figure 3a. Length of multicapillary convergent lensLAbout 80mm, the profile along its axis of symmetry (z-axis) is parabolic. Diagonal dimension of lens entrance endDUsually 10 to 20mm, and the diagonal dimension is designed as large as possible to improve the utilization rate of neutron beam current while ensuring that the transmission performance of the lens meets the requirement. Diagonal dimension of lens exit endDUsually 8 to 10mm, back focal lengthf10 to 30mm.
In the case of figures 3a and 3b,d-the internal diameter of the individual microchannels;D-the diagonal dimension of the lens end face; a-the entrance end face of the lens;L-a lensLength.
The neutron total reflection principle is schematically shown in fig. 4a and 4b, wherein
As the angle of incidence,
in order to be the angle of departure,
.101. Incident neutron rays; 102. reflecting the neutron rays; 103. a reflective plane; 104. a single microchannel of a polycapillary converging lens; 105. multiple reflected neutron rays.
FIG. 4a shows that the incident angle of neutron ray is less than or equal to the critical angle of total reflection based on the total reflection principle of neutron
When the neutrons will be totally reflected with little refraction. The critical angle for total reflection of a neutron is related to the neutron wavelength and the elemental composition of the reflection plane and can be calculated by the following formula:
wherein the content of the first and second substances,
is the wavelength of the incident neutrons and,
is the scattering length of the atom(s),
is the number density of nuclei. The critical angle for total reflection of neutrons per wavelength is 1.05 mrad/a, depending on the elemental composition and proportion of the polycapillary converging lens material (silicate glass or lead glass).
Fig. 4b the incident neutron beam leaves the microchannel exit after hundreds of reflections at the smooth inner surface of the microchannel. The multi-capillary convergent lens guides and changes the direction of the incident neutron beam through the profile curve of the multi-capillary convergent lens, and finally enables the neutrons to converge towards the focal point of the multi-capillary convergent lens.
For a capillary condenser lens determined by material composition, the critical angle of total reflection is linearly proportional to the neutron wavelength, thus facilitating the transmission of long-wavelength neutrons. Relevant experiments of the subject group prove that the multi-capillary convergent lens has a regulating effect on neutrons in a wave band range of 1 to 12A, particularly has high transmission efficiency on neutrons in a wave band range of 8 to 12A, and the optimal focal spot size in a corresponding wave band range can reach about 150 um.
Fig. 5 is a schematic diagram of a magnification imaging principle based on a polycapillary converging lens. Wherein, 11, quasi-parallel neutron beam; 3. a multi-capillary convergent lens; 12. a lens focus; 13. a sample to be tested; 6. a flashing screen.
As shown in fig. 5, in whichfThe distance between the sample 13 to be measured and the focal point 12 of the lens is the back focal length of the polycapillary converging lens 3d 1 (mm), the distance between the sample to be measured 13 and the scintillation screen 6 isd 2 (mm). According to the light propagation characteristics, the light source with the cone beam divergence has the geometric amplification imaging function. The propagation characteristics may be interpreted as: any neutron absorbing object in the path of the diverging beam will cast an enlarged shadow further away. Magnification factorMCalculated by the following formula:
the capillary tube converging lens 3 regulates and controls quasi-parallel neutron beams 11 to converge towards a lens focus 12, and realizes the amplification imaging of a sample 13 to be measured by utilizing the convergence and subsequent divergence characteristics of the converging beams.
The specific operation method comprises the following steps:
referring to fig. 5, the sample 13 to be measured is fixed in position, the distance to the scintillation screen 6 is kept constant, and the distance to the sample 13 to be measured by moving the polycapillary converging lens 3: (f+d 1 ) To adjust the geometric magnificationM. The entrance end face of the polycapillary converging lens 3 is fully illuminated and thereforeThe translation of the polycapillary converging lens 3 along the axis of symmetry does not cause a variation in the intensity of the incident beam. Considering the neutron focal spot intensity drop off the focal plane,d 1 the magnification factor can be 1.5 to 3 times by controlling the thickness to be about 2mm approximately. At the same time, withd 1 The neutron focal spot intensity irradiated on the sample to be measured 13 decreases, requiring a longer imaging exposure time.
Claims (9)
1. The neutron imaging spectrometer of the multi-capillary convergent lens is characterized by comprising a neutron beam system, a sample table, an imaging system and a control system;
the neutron beam system comprises a quasi-parallel neutron beam, a rectangular lead-out opening (1), a beam limiting hole (2) and a multi-capillary convergent lens (3);
the imaging system comprises a flicker screen (6), a 45-degree reflector (7) and an image collector (8);
the control system comprises a stepping motor controller (9) and a computer (10);
the device comprises a rectangular lead-out port (1), a beam limiting hole (2), a multi-capillary tube converging lens (3), a sample table (5), a scintillation screen (6), a 45-degree reflector (7) and an image collector (8), which are sequentially distributed along the path of a neutron beam;
the multi-capillary convergent lens (3) is arranged on the five-dimensional electric adjusting table (4);
the five-dimensional electric adjusting table (4) is sequentially connected with a stepping motor controller (9) and a computer (10);
the image collector (8) is connected with the computer (10).
2. A multi-capillary converging lens neutron imaging spectrometer according to claim 1, characterized in that the quasi-parallel neutron beam has a divergence of ± 6mrad, a frequency of 25Hz, and a mid-wavelength band of 1 to 12 a.
3. Neutron imaging spectrometer with polycapillary convergent lenses, according to claim 1, characterised in that the rectangular exit (1) has dimensions of 36 x 40mm 2 。
4. The neutron imaging spectrometer with a multi-capillary convergent lens according to claim 1, characterized in that the beam limiting aperture (2) has a diameter of 20mm and is installed at the rectangular exit (1).
5. The neutron imaging spectrometer with the polycapillary convergent lens according to claim 1, characterized in that the polycapillary convergent lens (3) comprises 40 to 80 ten thousand hollow circular microchannels, which are tightly arranged in a hexagon; the outline of the lens is parabolic; the diagonal dimension of the inlet end of the lens is 10 to 20mm; the diagonal size of an outlet end is 8 to 10mm, and the back focal length isf10 to 30mm.
6. Neutron imaging spectrometer of polycapillary convergent lenses, according to claim 1, characterized in that the polycapillary convergent lenses (3) are fixed in an aluminium sleeve (32) by means of an absorbing sheet (31), the aluminium sleeve (32) being fixed in a snap above the five-dimensional motorized adjustment stage (4).
7. Neutron imaging spectrometer with polycapillary convergent lenses, according to claim 1, characterised in that the scintillation screen (6) is made of a material such as 6 LiF/ZnS or GOS (Gd) 2 O 2 S（Tb/ 6 LiF））。
8. The neutron imaging spectrometer with the polycapillary convergent lens according to claim 1, characterized in that the image collector (8) is a neutron camera, or a CCD camera with spatial resolution or a neutron detector with time and spatial resolution.
9. Method of imaging a polycapillary convergent lens neutron imaging spectrometer according to any of claims 1 to 8, characterized in that it comprises the following steps:
quasi-parallel neutron beams are emitted from a rectangular lead-out port (1) of a neutron source and reach an inlet end of a multi-capillary convergent lens (3) through a beam limiting hole (2), the neutrons are subjected to multiple total reflections on the inner surface of a micro-channel of the multi-capillary convergent lens (3) and finally converge at a focus of the multi-capillary convergent lens (3), then diverge along the propagation direction of the neutron beams, penetrate through a sample to be detected on a sample table (5), are captured by a scintillation screen (6) and are converted into optical signals, and the optical signals are reflected by a 45-degree reflector (7) and then are recorded by an image collector (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211645857.XA CN115639229B (en) | 2022-12-21 | 2022-12-21 | Neutron imaging spectrometer with multi-capillary converging lens and imaging method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211645857.XA CN115639229B (en) | 2022-12-21 | 2022-12-21 | Neutron imaging spectrometer with multi-capillary converging lens and imaging method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115639229A true CN115639229A (en) | 2023-01-24 |
| CN115639229B CN115639229B (en) | 2023-05-12 |
Family
ID=84948122
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211645857.XA Active CN115639229B (en) | 2022-12-21 | 2022-12-21 | Neutron imaging spectrometer with multi-capillary converging lens and imaging method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115639229B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996001991A1 (en) * | 1994-07-08 | 1996-01-25 | Muradin Abubekirovich Kumakhov | Device for obtaining an image of an object using a stream of neutral or charged particles and a lens for converting the said stream of neutral or charged particles |
| CN102243433A (en) * | 2011-06-28 | 2011-11-16 | 中国原子能科学研究院 | High-speed neutron camera device |
| CN102279409A (en) * | 2011-06-28 | 2011-12-14 | 中国原子能科学研究院 | Neutron Beam Position Detector |
| CN113327699A (en) * | 2021-07-05 | 2021-08-31 | 北京师范大学 | Combined multi-capillary focusing optical device |
-
2022
- 2022-12-21 CN CN202211645857.XA patent/CN115639229B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996001991A1 (en) * | 1994-07-08 | 1996-01-25 | Muradin Abubekirovich Kumakhov | Device for obtaining an image of an object using a stream of neutral or charged particles and a lens for converting the said stream of neutral or charged particles |
| CN102243433A (en) * | 2011-06-28 | 2011-11-16 | 中国原子能科学研究院 | High-speed neutron camera device |
| CN102279409A (en) * | 2011-06-28 | 2011-12-14 | 中国原子能科学研究院 | Neutron Beam Position Detector |
| CN113327699A (en) * | 2021-07-05 | 2021-08-31 | 北京师范大学 | Combined multi-capillary focusing optical device |
Non-Patent Citations (3)
| Title |
|---|
| 周腊珍等: "一种基于毛细管X光透镜的微型锥束CT扫描仪" * |
| 孙天希等: "整体毛细管X射线半会聚透镜在微区EXAFS分析技术中的应用" * |
| 孙天希等: "毛细管X光会聚透镜在潜指纹提取中的应用" * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115639229B (en) | 2023-05-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP6937380B2 (en) | Methods for performing X-ray spectroscopy and X-ray absorption spectroscopy systems | |
| JP3090471B2 (en) | Particle, X-ray and gamma-ray quantum beam controller | |
| US7583789B1 (en) | X-ray imaging systems employing point-focusing, curved monochromating optics | |
| US4317036A (en) | Scanning X-ray microscope | |
| KR20080045156A (en) | Lobster eye x-ray imaging system and method of fabrication thereof | |
| CN106996941B (en) | X-ray fluorescence analysis device and analysis and detection method thereof | |
| CN111060289B (en) | High-sensitivity coronagraph stray light detection device | |
| US11662485B2 (en) | Neutron imaging systems and methods | |
| Leigh et al. | A report on the application of synchrotron radiation to low-angle scattering | |
| CN111323440A (en) | X-ray diffraction diagnostic system | |
| Wu et al. | Characterization and calibration of a multilayer coated Wolter optic for an imager on the Z-machine at Sandia National Laboratories | |
| CN115639229B (en) | Neutron imaging spectrometer with multi-capillary converging lens and imaging method thereof | |
| AU2018309611A1 (en) | Convergent x-ray imaging device and method | |
| CN109187589B (en) | Large focal spot confocal X-ray spectrum analysis device | |
| CN218036511U (en) | X-ray photoelectron spectrometer | |
| US4857730A (en) | Apparatus and method for local chemical analyses at the surface of solid materials by spectroscopy of X photoelectrons | |
| Gotchev et al. | KB–PJX—A streaked imager based on a versatile x-ray microscope coupled to a high-current streak tube | |
| CN110908236A (en) | X-ray phase imaging system | |
| Pantojas et al. | A polycapillary-based X-ray optical system for diffraction applications | |
| CN219162019U (en) | Radiation source assembly | |
| CN217359672U (en) | Micro-area X-ray spectral analysis system | |
| EP4201328A1 (en) | X-ray irradiation apparatus, including a spectrally shaping x-ray optic and a spectral filter aperture device, for x-ray imaging | |
| US20230293128A1 (en) | System and method for compact laminography utilizing microfocus transmission x-ray source and variable magnification x-ray detector | |
| Kumakhov | State and perspectives of capillary Roentgen optics | |
| Zhou et al. | Quasi-parallel X-ray microbeam obtained using a parabolic monocapillary X-ray lens with an embedded square-shaped lead occluder |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |