Method and device of measuring pellet shape and profile parameters based on bilateral misalignment differential confocal and interference

Abstract

The invention discloses a method and a device of measuring pellet shape and profile parameters based on bilateral misalignment differential confocal and interference, belonging to technical fields ofconfocal microscopy, laser inertial confinement nuclear fusion and interferometry. The method combines a laser bilateral misalignment differential confocal technology and short coherence interferometry. Inner and outer surfaces of a laser fusion pellet undergo precise chromatography and focusing through the bilateral misalignment differential confocal technology; interference measurement is performed on the outer surface of the pellet by using the short coherence interferometry; and further, three-dimensional rotary drive is performed on the pellet by using an orthogonal rotary drive technology so as to obtain parameters like inner and outer surface three-dimensional profiles, outer surface shape and shell thickness distribution of the fusion pellet, so that the fusion pellet shape and profile parameters are measured comprehensively. The method provides data base and detection manners for research of simulation tests of laser inertial confinement nuclear fusion, research of pellet preparation process and pellet screening, and has a bright application prospect in fields like laser inertial confinement nuclear fusion, high energy physics and precision detection.

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 bilateral dislocation differential confocal technology with short coherent interference technology, and relates to a laser 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. Background technique [0002] 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

[0005] 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;

[0006] 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;

[0007] 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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