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Method and device for measuring shape and profile parameters of laser confocal interference nuclear fusion target pill

A fusion target and confocal technology, which is applied in the direction of measuring devices, optical devices, instruments, etc., can solve the problems of non-destructive measurement of internal parameters of the target capsule, non-uniform value reference, and damage of the target capsule, so as to suppress the power of the light source of the system Drift, improve the freedom of optical path design, and suppress the effect of surface property differences

Active Publication Date: 2020-04-14
BEIJING INSTITUTE OF TECHNOLOGYGY
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Problems solved by technology

[0006] 1) The internal parameters of the target capsule cannot be measured non-destructively. The existing method requires destructive cutting of the target capsule. After the measurement, the target capsule is destroyed and cannot be applied to the next step of process processing or target shooting experiment;
[0007] 2) The separation of the measurement process of parameters such as shape and contour cannot fully reveal the phenomenon and law of structural changes that occur during the preparation of the target pellet and the nuclear fusion reaction;
[0008] 3) Insufficient comprehensive measurement capability, each instrument can only measure one or two parameters, and the measurement of the comprehensive parameters of the target pellet needs to be repeatedly installed and adjusted on different instruments, which is inefficient and the value reference is not uniform

Method used

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  • Method and device for measuring shape and profile parameters of laser confocal interference nuclear fusion target pill
  • Method and device for measuring shape and profile parameters of laser confocal interference nuclear fusion target pill
  • Method and device for measuring shape and profile parameters of laser confocal interference nuclear fusion target pill

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Embodiment 1

[0053] Such as image 3 As shown, in the comprehensive measurement method of the shape and profile parameters of the laser confocal interference nuclear fusion target, the light source system 1 uses a point light source, and the divergent beam emitted by the point light source is collimated into a parallel beam through the collimator lens 2, and the parallel beam is separated by the beam splitter After A3 is reflected, it is divided into a transmitted illumination beam and a reflected illumination beam by the beam splitter B21, and the reflected illumination beam is converged into a point by the measurement objective lens 5 to illuminate the fusion target pellet 13 and be reflected. The reflected beam carrying the fusion target pellet 13 information passes through the measuring objective lens 5 to form a measuring beam, the measuring beam is divided into a transmitted measuring beam and a reflected measuring beam by the beam splitter B21, and the reflected measuring beam enters...

Embodiment 2

[0068] Such as Figure 4 As shown, in the laser confocal interference nuclear fusion nuclear fusion target capsule shape profile parameter comprehensive measurement device, the light source system 1, the beam splitter A3 placed along the light source exit direction, the beam splitter B21 placed sequentially along the reflection direction of the beam splitter A3 and the interference Arm 24, the measuring objective lens 5 placed sequentially along the reflection direction of the beam splitter B21, the confocal detection system 6 located in the opposite direction of the reflection direction of the beam splitter A3, the imaging converging mirror 22 and the interference CCD 23 located in the opposite direction of the reflection direction of the beam splitter B21 , an orthogonal drive system 14 located in the outgoing direction of the measurement objective lens 5 and whose rotation axis is coaxial with the measurement optical axis, a rotation drive system 15 whose rotation axis is pe...

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Abstract

The invention discloses a method and device for measuring parameters of a shape profile of a laser confocal interference nuclear fusion pellet, and belongs to the technical field of confocal microimaging, laser inertial confinement nuclear fusion and interferometry. According to the method and device for measuring the parameters of the shape profile of the laser confocal interference nuclear fusion pellet, a laser confocal technology is combined with a short coherence interferometry technology, the laser confocal technology is used for performing precision tomography focus-fixing on the innersurface and the outer surface of a shell layer of the laser fusion pellet, the short coherence interference technology is used for performing interferometry on the outer surface of the pellet, and anorthogonal rotary drive technology is further used for performing three-dimensional rotary drive on the pellet to obtain the parameters such as the three-dimensional profile of the inner surface / the outer surface of the pellet, the shape of the outer surface and the thickness distribution of the shell layer to realize the comprehensive measurement of the parameters of the shape profile of the nuclear fusion pellet. The method and device can provide a data basis and a detection means for laser inertial confinement nuclear fusion simulation experiment research, pellet preparation process research and pellet screening, and have broad application prospects in the field of laser inertial confinement nuclear fusion, high energy physics and precision detection.

Description

technical field [0001] The invention belongs to the technical field of confocal microscopic imaging, laser inertial confinement nuclear fusion and precision photoelectric measurement. It combines laser confocal technology with short coherence interference technology, and relates to a method for comprehensive measurement of shape and profile parameters of laser confocal interference nuclear fusion target pellets and The device has broad application prospects in the fields of laser inertial confinement nuclear fusion, high-energy physics and precision detection. [0002] technical background [0003] Laser inertial confinement fusion (ICF) is an important means of artificially simulating nuclear explosions and celestial body evolution, and it is also an important direction for human beings to explore future clean energy, so it has very important scientific research and practical significance. In the laser inertial confinement fusion experiment, the hollow laser fusion target ca...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B11/24G01B11/06G01B11/255G01B11/00
CPCG01B11/00G01B11/06G01B11/2441G01B11/255
Inventor 王允邱丽荣赵维谦
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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