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

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.

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...

AI Technical Summary

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 different parameter measurement processes cannot fully reveal the structural changes and laws 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

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