Laser differential confocal interference nuclear fusion target pellet shape parameter measurement method and device

Abstract

The invention discloses a method and device for measuring parameters of the shape of a laser differential 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 of the laser differential confocal interference nuclear fusion pellet, a laser differential confocal technology is combined with a short coherence interferometry technology, the laser differential confocal technology is used for performing precisiontomography focus-fixing on the inner surface 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 an orthogonal 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.

Description

technical field [0001] The invention belongs to the technical fields of confocal microscopic imaging, laser inertial confinement nuclear fusion and precision photoelectric measurement, and combines laser differential confocal technology with short coherence interference technology, and relates to a laser differential confocal interference nuclear fusion target pellet shape profile parameter The comprehensive measurement method and device have 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 targ...

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 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

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