CN206420582U - It is a kind of based on ICF hot spot electron temperature detecting devices of the standard with the optical axis - Google Patents
It is a kind of based on ICF hot spot electron temperature detecting devices of the standard with the optical axis Download PDFInfo
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- CN206420582U CN206420582U CN201720026727.6U CN201720026727U CN206420582U CN 206420582 U CN206420582 U CN 206420582U CN 201720026727 U CN201720026727 U CN 201720026727U CN 206420582 U CN206420582 U CN 206420582U
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- 238000003384 imaging method Methods 0.000 claims abstract description 27
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- 230000004927 fusion Effects 0.000 claims abstract description 12
- 229910052751 metal Inorganic materials 0.000 claims description 7
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- 239000008188 pellet Substances 0.000 claims description 5
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 4
- 239000000523 sample Substances 0.000 claims 1
- 230000000007 visual effect Effects 0.000 abstract description 8
- 241000700608 Sagitta Species 0.000 abstract 2
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 239000002356 single layer Substances 0.000 description 6
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- 230000005461 Bremsstrahlung Effects 0.000 description 2
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000003745 diagnosis Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
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- 239000000463 material Substances 0.000 description 2
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- 238000012986 modification Methods 0.000 description 2
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- 229910052750 molybdenum Inorganic materials 0.000 description 2
- 239000011733 molybdenum Substances 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 229910052722 tritium Inorganic materials 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- YZCKVEUIGOORGS-OUBTZVSYSA-N Deuterium Chemical compound [2H] YZCKVEUIGOORGS-OUBTZVSYSA-N 0.000 description 1
- YZCKVEUIGOORGS-NJFSPNSNSA-N Tritium Chemical compound [3H] YZCKVEUIGOORGS-NJFSPNSNSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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- 229910052805 deuterium Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
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- 229910052737 gold Inorganic materials 0.000 description 1
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- 239000000126 substance Substances 0.000 description 1
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Abstract
The utility model provides a kind of based on ICF hot spot electron temperature detecting devices of the standard with the optical axis, described detecting devices includes two pieces of sphere object lens, the one piece of composite sphere object lens and the imaging plate of X-ray in sagitta of arc direction of meridian direction, and two passages constituted are based on Kirkpatrick Baze（KB）Mirror structure imaging；The X-ray that hot spot is sent in inertial confinement fusion ICF forms two one-dimensional images after the sphere object lens reflection of meridian direction, then again by sagitta of arc direction composite sphere object lens reflection after image planes be on X-ray imaging plate formation two two-dimensional imagings, with reference to the intensity of two images of system calibrating data and contrast, you can draw the Two dimensional Distribution absolute magnitude of hot spot electron temperature.The utility model can be realized accurate with optical axis detection, do not significantly affected by the introduced visual field difference of visual angle difference between different detection channels, and with high-space resolution, high collection efficiency advantage, the two-dimensional result of hot spot electron temperature is provided in the case of without doping, with wide and important application prospect.
Description
Technical Field
The utility model belongs to electron temperature detection field, concretely relates to ICF hot spot electron temperature detection equipment based on accurate coaxial.
Background
The final target of the implosion compression of the Inertial Confinement Fusion (ICF) target pellet is that hot spot substances reach high temperature and high surface density, and the temperature and the surface density of the hot spots are important judgment bases of fusion ignition. Wherein temperature is a necessary condition for generating fusion reaction, and fusion reaction can only occur when a certain temperature is reached. Therefore, accurate detection of the electron temperature is one of the bases for researching the physical problems in the hot spot state, and is the key point and the difficulty for researching fusion ignition.
The prior diagnosis technology and equipment have the following defects: 1. the existing multi-channel electronic temperature detection equipment is identical to the observation target pointIn position, the difference of the introduced field of view is difficult to avoid due to the difference of the view angles among different channels. 2. Electronic temperature sensing devices primarily use pinholes or slits to provide spatial resolution, but pinhole or slit imaging, spatial resolution (about 10 μm) and collection efficiency (about 10 μm)-9sr magnitude) is low, which is insufficient for typical sizes such as 70-100 μm hot spot of a superluminescent III host large laser device and low X-ray emission intensity. 3. At present, a small amount of medium-high Z elements are usually doped in a hot spot internationally, the electron temperature of the hot spot is given by measuring the spectral line of the doped elements, and the radiation refrigeration effect of the doped elements is a non-negligible problem.
Disclosure of Invention
The utility model aims to solve the technical problem that an ICF hot spot electron temperature detection equipment based on accurate coaxial is provided.
The utility model discloses an ICF hot spot electron temperature detection equipment based on accurate coaxial, its characteristics are, ICF hot spot electron temperature detection equipment include lie in meridian direction, relative spherical objective I and spherical objective II of plane of reflection, lie in sagittal direction, compound spherical objective III and the imaging plate of X ray of plane of reflection upwards; the hot spot is obtained by indirectly or directly driving the inertial confinement fusion ICF target pellet implosion, and the X ray emitted by the hot spot is incident to the spherical objective I along the light path I and reflected to the reflecting surface I of the composite spherical objective III to intercept an energy band E1The X-ray is imaged on an imaging plate to form a two-dimensional single-energy image I, and a Kirkpatrick-Baze mirror channel, namely a KB mirror channel I, is formed by a reflecting surface of the spherical objective I and a reflecting surface I of the composite spherical objective III; the X-ray emitted by the hot spot is incident to the spherical objective lens II along the light path II and reflected to the reflecting surface II of the composite spherical objective lens III, and then an energy band E is intercepted2The X ray is imaged on the imaging plate to form a two-dimensional single-energy image II, and the reflecting surface of the spherical objective II and the reflecting surface II of the composite spherical objective III form another KB mirror channel II; the signals of the single energy image I and the single energy image II are transmitted to a laser phosphor screen analyzer for identificationThen, the two-dimensional electron temperature of the hot spot is obtained through data processing;
the center of the composite spherical objective lens III is positioned on the symmetrical surfaces of the spherical objective lens I and the spherical objective lens II, and the vertical symmetrical surface of the imaging plate is superposed with the symmetrical surfaces of the spherical objective lens I and the spherical objective lens II;
and the reflecting surface I and the reflecting surface II are respectively coated with a narrow-energy-band X-ray multilayer film.
An included angle theta between a connecting line I of the centers of the hot spot and the spherical objective lens I and a connecting line II of the centers of the hot spot and the spherical objective lens II, namely an included angle theta between the two channels and the hot spot, is smaller than one half of the spatial resolution of the KB mirror channel I and the KB mirror channel II due to the included angle theta.
And the reflecting surfaces of the spherical objective lens I and the spherical objective lens II are coated with a single-layer metal film.
The narrow-band X-ray multilayer film on the reflecting surface I is used for obtaining an energy band E according to the Bragg diffraction principle1The narrow-band X-ray multilayer film on the reflecting surface II obtains an energy band E according to the Bragg diffraction principle2The X-ray multilayer film of (1).
Said energy band E1And an energy band E2Has a width of 0.5keV or less and an energy band E1And an energy band E2With a spacing of more than 0.5 keV.
The utility model discloses a working process of ICF hot spot electron temperature detection equipment based on accurate coaxial as follows:
the implosion hot spot in the inertial confinement fusion ICF emits high-energy X rays, and the X rays are reflected by the spherical objective lens I and the spherical objective lens II in the meridional direction and only have energy band E lower than the energy band E1And an energy band E2The X-rays with different cut-off energy points are reflected to form two one-dimensional images, and then the two-dimensional single-energy images of two channels are formed on an image surface, namely an X-ray imaging plate, after the X-rays are reflected by the compound spherical objective lens III in the sagittal direction. Acquired X-ray two-dimensional monoenergetic energyThe image I and the image II are recorded by an imaging plate, and the imaging plate is scanned by a laser phosphor screen analyzer to obtain two-dimensional distribution images of the X-ray two-dimensional single energy image I and the single energy image II. And by combining the calibration data of the two KB mirror channels and the imaging plate and comparing the intensities of the two images, the two-dimensional distribution absolute quantity of the hot spot electron temperature can be obtained. Because the maximum view field geometric difference introduced by the included angle theta of the two channels relative to the hot spot is less than one half of the spatial resolution of the KB mirror channel I and the KB mirror channel II, the view field difference between the channels is effectively avoided, and the obtained result is the hot spot electronic temperature information of the quasi-coaxial axis.
The utility model discloses a ICF hot spot electron temperature detection equipment based on accurate coaxial ICF can realize accurate coaxial ICF hot spot electron temperature ration and survey, and spatial resolution reaches 3 mu m-5 mu m, and light harvesting efficiency reaches 10-11～10-12In the sr magnitude, the electron temperature of the high-spatial resolution hot spot can be detected. The utility model discloses a ICF hot spot electron temperature detection equipment based on accurate coaxial still can directly measure ICF hot spot deuterium tritium fuel bremsstrahlung X ray, need not to dope, avoids radiating refrigeration effect, has wide and important application prospect.
Drawings
Fig. 1 is the structural schematic diagram of the ICF hot spot electronic temperature detection device based on quasi-co-viewing axis of the present invention.
In the figure, 1, a hot spot 2, a spherical objective I3, a spherical objective II 4, a composite spherical objective III 5, an imaging plate 6, a single energy image I7, a single energy image II 8, a reflecting surface I9 and a reflecting surface II.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
Example 1
As shown in figure 1, the ICF hot spot electronic temperature detection device based on quasi-co-ordinate of the utility model comprises a spherical objective I2 and a spherical objective II 3 which are positioned in the meridian direction and have opposite reflecting surfaces, a composite spherical objective III 4 positioned in the sagittal direction and have upward reflecting surfaces, and an X-ray imaging plate 5; the hot spot 1 is obtained by indirectly driving the inertial confinement fusion ICF target pellet implosion, and X rays emitted by the hot spot 1 are incident to the spherical objective I2 along the light path I and reflected to the reflecting surface I8 of the composite spherical objective III 4 to intercept an energy band E1The X-ray is imaged on the imaging plate 5 to form a two-dimensional single-energy image I6, and a Kirkpatrick-Baze mirror channel, namely a KB mirror channel I, is formed by the reflecting surface of the spherical objective I2 and the reflecting surface I8 of the composite spherical objective III 4; the X-ray emitted by the hot spot 1 is incident to the spherical objective II 3 along the light path II and reflected to the reflecting surface II 9 of the composite spherical objective III 4, and then an energy band E is intercepted2The X-ray is imaged on the imaging plate 5 to form a two-dimensional single-energy image II 7, and the reflecting surface of the spherical objective II 3 and the reflecting surface II 9 of the composite spherical objective III 4 form another KB mirror channel II; the signals of the single energy image I6 and the single energy image II 7 are transmitted to a laser phosphor screen analyzer for identification, and then the two-dimensional electron temperature of the hot spot 1 is obtained through data processing;
the center of the composite spherical objective lens III 4 is positioned on the symmetrical surfaces of the spherical objective lens I2 and the spherical objective lens II 3, and the vertical symmetrical surface of the imaging plate 5 is superposed with the symmetrical surfaces of the spherical objective lens I2 and the spherical objective lens II 3;
and the reflecting surface I8 and the reflecting surface II 9 are respectively coated with a narrow-energy-band X-ray multilayer film.
An included angle theta between a connecting line I of centers of the hot spot 1 and the spherical objective lens I2 and a connecting line II of centers of the hot spot 1 and the spherical objective lens II 3 is an included angle theta between the two channels and the hot spot, and the maximum geometric difference of the field of view introduced by the included angle theta is smaller than one half of the spatial resolution of the KB mirror channel I and the KB mirror channel II.
And the reflecting surfaces of the spherical objective lens I2 and the spherical objective lens II 3 are coated with a single-layer metal film. The single-layer metal film coated on the reflecting surface of the spherical objective lens I2 is made of molybdenum, and the single-layer metal film coated on the reflecting surface of the spherical objective lens II 3 is made of copper.
The narrow-band X-ray multilayer film on the reflecting surface I8 obtains an energy band E according to the Bragg diffraction principle1The energy band E is obtained by the narrow-band X-ray multilayer film on the reflecting surface II 9 according to the Bragg diffraction principle2The X-ray multilayer film of (1).
Said energy band E1And an energy band E2Has a width of 0.5keV or less and an energy band E1And an energy band E2With a spacing of more than 0.5 keV.
In the embodiment, the spatial resolution of the KB mirror channel I and the KB mirror channel II is 3-5 microns, the imaging magnification is 7.5, and the included angle theta is 0.9 degrees, so that the space is saved by adopting the design of the composite spherical objective lens, and the space can reach 0.9 degrees. The spherical objective lens I2 and the spherical objective lens II 3 in the meridian direction and the composite spherical objective lens III 4 in the sagittal direction are all 5mm in size, and the imaging plate 5 of the X-ray is 15cm in size. Based on the basic principle of the KB mirror, the KB mirror channel I emits an energy band E to the hot spot 11Two-dimensional monoenergetic imaging is carried out for 3.5 +/-0.25 keV X-rays, and the imaged monoenergetic image is an X-ray two-dimensional monoenergetic image I6. Based on the basic principle of the KB mirror, the KB mirror channel II emits an energy band E for the hot spot 12Two-dimensional monoenergetic imaging is carried out on the X-ray with the power of 8 +/-0.25 keV, and the imaged monoenergetic image is an X-ray two-dimensional monoenergetic image II 7. The typical hot spot 1 size in the process of indirectly driving ICF target pill implosion on a large laser device of a Shenguang III host is 70-100 mu m.
The utility model discloses a ICF hot spot electron temperature detection equipment based on accurate co-sight axis requires to acquire the spectral line intensity of two energy bands in the accurate co-sight axis to the hot spot. The spectral energy radiation per unit mass for ICF implosion hot spots is:
（1）
wherein,is the charge of the electric charge, and,it is the mass of the electrons that,it is the speed of light that is,is the number of atoms in the molecule,is the density of the electrons and the electron density,is the boltzmann constant which is,is the temperature of the electrons and the temperature of the electrons,is the number of mass components,is the mass of the proton or protons,is the constant of the planck, and,is the frequency, this time:
（2）
and:
（3）
that is, as long as the intensities of two different spectral lines on the hot spot are detected, the electron temperature can be given according to the above formula, howeverAre location dependent, i.e.That is to sayAndmust come from the same point (，). However, when the multi-channel electronic temperature diagnosis device observes the same position of a target point at present, the geometric difference of the introduced view field will be brought by the difference of the view angles among different channelsThis field of view difference includes neither only the two-dimensional projection cross-sectional geometry difference, nor the spatial detection path difference perpendicular to the cross-section, and thus it is difficult to obtain an accurate result of the electron temperature.
It is proposed here to circumvent the above field difference maximum to KB microscope spatial resolutionIs less than one-half (the reason for taking one-half is that the spatial resolution bandwidth is symmetrically distributed with the visual axis as the center line), and thus it is found thatTo further obtain the accurate junction of the electron temperatureFruitThereby realizing the ICF hot spot electronic temperature quantitative detection of the quasi-coaxial visual axis.
On a large laser device of a Shenguang III host, the minimum visual angle difference between channels of a common multi-channel hot spot electronic temperature detection device with higher spatial resolution is 5.45 degrees, so the geometric difference of the introduced visual fields is 3.65-5.20 mu m and is more than the spatial resolution half range of a KB mirror by 1.5-2.5 mu m, and the accurate result of the electronic temperature is difficult to obtain. The included angle theta of the visual angle difference between the two channels in the ICF hot spot electronic temperature detection equipment based on the quasi-homoscopic axis of the utility model is 0.9 degree, the geometric difference of the introduced field of view is 0.56-0.79 μm and is less than the spatial resolution half range of 1.5-2.5 μm of a KB mirror, so that the obvious influence of the field of view difference is effectively avoided, the concept of quasi-homodyne axis is defined, meanwhile, by combining the advantages of high light collecting efficiency, high spatial resolution and the like of the KB mirror, bremsstrahlung X-rays of the deuterium-tritium fuel with the hot spot 1 are directly measured, the doping of the hot spot is not needed, accurate information of two-dimensional distribution of electron temperature is given, the quantitative detection of the ICF hot spot electron temperature of the quasi-homoscopic axis is realized, and beneficial exploration is made for researching physical problems such as closely related parameters of important physical states of the inertial confinement fusion ICF implosion hot spots, electron temperature and the relation between the electron temperature and the hot spot geometry.
Suppose thatIs based on the intensity of each point on an X-ray two-dimensional single energy image formed by an ICF hot spot electronic temperature detection device of a quasi-co-visual axis to the hot spot 1,is the spectral response of the imaging plate 5 of the X-rays,is the spectral response of the KB mirror channel, thenThus, therefore, it isFor the present embodimentThereby obtaining the accurate information of the two-dimensional distribution of the ICF implosion hot spot electron temperature of the quasi-coaxial visual axis.
Example 2
The structure of the present embodiment is the same as that of embodiment 1, except that the hot spot 1 is obtained by directly driving the inertial confinement fusion ICF target pellet implosion, the material of the single-layer metal film coated on the reflecting surface of the spherical objective lens i 2 is gold, and the material of the single-layer metal film coated on the reflecting surface of the spherical objective lens ii 3 is molybdenum. The included angle theta of the two channels relative to the hot spot is 0.7 DEG, and the energy band E emitted by the hot spot 1212 + -0.25 keV, energy band E1Is 4.2. + -. 0.25 keV.
It will be appreciated by those of ordinary skill in the art that the embodiments described herein are intended to assist the reader in understanding the principles of the invention, and it is to be understood that the scope of the invention is not limited to such specific statements and embodiments. Those skilled in the art can make various other specific modifications and combinations based on the teachings of the present invention without departing from the spirit of the invention, and such modifications and combinations are still within the scope of the invention.
Claims (5)
1. An ICF hot spot electron temperature detection device based on quasi-co-ordinate is characterized by comprising a spherical objective lens I (2) and a spherical objective lens II (3) which are positioned in a meridian direction and have opposite reflecting surfaces, a composite spherical objective lens III (4) which is positioned in a sagittal direction and has an upward reflecting surface, and an X-ray imaging plate (5); the hot spot (1) is obtained by indirectly or directly driving the inertial confinement fusion ICF target pellet to implode, and X rays emitted by the hot spot (1) are incident to the spherical objective I (2) along the light path I and are reflected to the reflecting surface I (8) of the composite spherical objective III (4) and then are interceptedEnergy taking band E1The X-ray is imaged on an imaging plate (5) to form a two-dimensional single-energy image I (6), and a Kirkpatrick-Baze mirror channel, namely a KB mirror channel I, is formed by a reflecting surface of the spherical objective I (2) and a reflecting surface I (8) of the composite spherical objective III (4); the X-ray emitted by the hot spot (1) is incident to the spherical objective lens II (3) along the light path II and reflected to the reflecting surface II (9) of the composite spherical objective lens III (4) to intercept an energy band E2The X-ray is imaged on the imaging plate (5) to form a two-dimensional single-energy image II (7), and the reflecting surface of the spherical objective II (3) and the reflecting surface II (9) of the composite spherical objective III (4) form another KB mirror channel II; the signals of the single energy image I (6) and the single energy image II (7) are transmitted to a laser phosphor screen analyzer for identification, and then the two-dimensional electron temperature of the hot spot (1) is obtained through data processing;
the center of the composite spherical objective lens III (4) is positioned on the symmetrical surfaces of the spherical objective lens I (2) and the spherical objective lens II (3), and the vertical symmetrical surface of the imaging plate (5) is superposed with the symmetrical surfaces of the spherical objective lens I (2) and the spherical objective lens II (3);
and the reflecting surface I (8) and the reflecting surface II (9) are respectively coated with a narrow-energy-band X-ray multilayer film.
2. The ICF hot spot electron temperature detecting device based on quasi-co-viewing axis as claimed in claim 1, wherein the angle θ between the connecting line I of the hot spot (1) and the center of the spherical objective lens I (2) and the connecting line II of the hot spot (1) and the center of the spherical objective lens II (3), i.e. the angle θ between the two channels and the hot spot, is smaller than half of the spatial resolution of the KB mirror channel I and the KB mirror channel II.
3. An ICF hot spot electron temperature detection device based on quasi-co-axial as claimed in claim 1, characterized in that the reflecting surfaces of the spherical objective lens I (2) and the spherical objective lens II (3) are coated with a single metal film.
4. An ICF hot spot electron temperature detection device based on quasi-co-axial as claimed in claim 1, characterized in that said narrow band X-ray multilayer film on reflecting surface I (8) is based on Bragg diffraction principle to obtain energy band E1The narrow-band X-ray multilayer film on the reflecting surface II (9) obtains an energy band E according to the Bragg diffraction principle2The X-ray multilayer film of (1).
5. An ICF hot spot electron temperature probe based on quasi-co-axial as claimed in claim 1 wherein said energy band E1And an energy band E2Has a width of 0.5keV or less and an energy band E1And an energy band E2With a spacing of more than 0.5 keV.
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| CN201720026727.6U CN206420582U (en) | 2017-01-11 | 2017-01-11 | It is a kind of based on ICF hot spot electron temperature detecting devices of the standard with the optical axis |
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| CN201720026727.6U CN206420582U (en) | 2017-01-11 | 2017-01-11 | It is a kind of based on ICF hot spot electron temperature detecting devices of the standard with the optical axis |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106706157A (en) * | 2017-01-11 | 2017-05-24 | 中国工程物理研究院激光聚变研究中心 | Quasi-concentric visual axis-based ICF (inertial confinement fusion) hot spot electronic temperature detection device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106706157A (en) * | 2017-01-11 | 2017-05-24 | 中国工程物理研究院激光聚变研究中心 | Quasi-concentric visual axis-based ICF (inertial confinement fusion) hot spot electronic temperature detection device |
| CN106706157B (en) * | 2017-01-11 | 2023-06-13 | 中国工程物理研究院激光聚变研究中心 | ICF hot spot electronic temperature detection equipment based on quasi-synoptic axis |
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