Method and device for comprehensive measurement of geometric parameters of laser differential confocal nuclear fusion target pellet

A differential confocal and geometric parameter technology, applied in the direction of measuring devices, optical devices, instruments, etc., can solve the problems of target capsule damage, non-destructive measurement of target capsule internal parameters, low efficiency, etc., to suppress surface property differences, The effect of suppressing the power drift of the system light source
CN109959349BActive Publication Date: 2020-07-10BEIJING INSTITUTE OF TECHNOLOGYGY
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
BEIJING INSTITUTE OF TECHNOLOGYGY
Publication Date
2020-07-10

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Abstract

The invention, which belongs to the technical field of confocal microscopic imaging, laser inertial confinement nuclear fusion and precision photoelectric measurement, discloses a laser-differential-confocal-technology-based method and device for comprehensively measuring geometric parameters of a nuclear fusion pellet. According to the invention, on the basis of combination of the laser differential confocal technology with the three-dimensional rotary scanning technology, precision tomography focusing fixing is carried out on inner and outer surfaces of a laser fusion pellet shell layer by using the laser differential confocal technology; orthogonal rotary driving is performed on the pellet by using the three-dimensional rotary scanning technology; calculation and reconstruction are carried out on focusing information of all points of the inner and outer surfaces of the pellet to obtain parameters including the curvature radiuses of the inner and outer surfaces of the pellets, circular contours and three-dimensional contours of the inner and outer surfaces, the shell thickness and three-dimensional distribution and the like, thereby realizing comprehensive measurement of the geometric parameters of the nuclear fusion pellet. Therefore, the data base and detection way are provided for the laser inertial confinement nuclear fusion simulation experiment research, pellet preparation process research and pellet screening.
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Description

technical field

[0001] The invention belongs to the technical fields of confocal microscopic imaging, laser inertial confinement nuclear fusion and precision photoelectric measurement, combines laser differential confocal technology with three-dimensional rotary scanning technology, and relates to a comprehensive measurement method for geometric parameters of laser differential confocal nuclear fusion target pellets It has broad application prospects in the fields of laser inertial confinement 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 capsule filled wi...

Claims

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