Device and method for real-time measurement of hydrogen isotope crystal growth height
A hydrogen isotope, real-time measurement technology, applied in the direction of measuring device, phase influence characteristic measurement, optical device, etc., can solve the problem of unsatisfactory processing results and achieve the effect of high-precision real-time interferometry
Active Publication Date: 2021-09-28
ZHEJIANG UNIV
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However, when this method is applied to the phase-shifting interference microscope system, the processing results are not satisfactory for the interferogram with large fringe changes or dense fringes
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[0046] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be noted that the following embodiments are intended to facilitate the understanding of the present invention, but do not limit it in any way.
[0047] Such as figure 1 As shown, a hydrogen isotope crystal growth height real-time measurement device, the whole device is fixed on the marble platform 18, including an interferometric system, a displacement system and a computer processing module.
[0048] In the interferometric system, the fiber laser 1 is used as the light source, and 532nm short coherent light is selected to reduce the influence of stray fringes on the glass window; the laser light emitted by the light source is injected into the entire interference system through the single-mode polarization-maintaining fiber 2, which is a divergent Gaussian beam. After passing through the doublet lens 3, it becomes a converging light wav...
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Abstract
The invention discloses a real-time measurement device and method for the growth height of hydrogen isotope crystals, wherein the measurement method includes: (1) in the initial stage of hydrogen isotope crystal growth, control the electric five-dimensional adjustment frame to adjust the Z direction to complete focusing, and control the electric The five-dimensional adjustment frame moves in the XY plane until the area to be observed and recorded is located in the center of the system field of view; (2) Adjust the angle of the interferometric system through the electric five-dimensional adjustment frame to obtain a suitable interference image; before starting the monitoring , select a point on the background of the initial crystallization position as a reference point, and use it as a benchmark for region segmentation. After setting the monitoring time interval, start measuring; (3) at the monitoring time node, use the synchronous phase-shifting interferometry method to accurately Calculate the phase ΔΦ(t) of the monitoring point and the absolute height H of the monitoring point at this moment DT (x,y). The invention can effectively and accurately calculate the growth height of hydrogen isotope crystals in real time.
Description
technical field [0001] The invention belongs to the technical field of optical precision detection, and in particular relates to a real-time measuring device and method for hydrogen isotope crystal growth height. Background technique [0002] In inertial confinement nuclear fusion, high-energy laser beams or ion beams are used to hit the fuel target with a diameter of millimeters. Through physical processes such as ablation and implosion on the surface of the target, the fuel in the target is finally fused to release energy. The fuel target pellet is composed of an outer spherical shell, an inner solid deuterium-tritium fuel layer, and a gaseous deuterium-tritium layer in the center. The real-time monitoring and data recording of the growth height of the solid deuterium-tritium fuel layer is an important reference for crystallization control, namely The crystal growth height detection system needs to meet the requirements of real-time, non-contact and high precision. [000...
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IPC IPC(8): G01B11/06G01N21/45
CPCG01B11/0608G01N21/45
Inventor 刘东徐兆锐彭韶婧臧仲明刘崇
Owner ZHEJIANG UNIV