Measurement of laser differential confocal geometrical parameters for ICF capsule  

作　　者：Longxiao Wang Yun Wang Xianxian Ma Weiqian Zhao 

机构地区：[1]Beijing Key Lab for Precision Optoelectronic Measurement Instrument and Technology,School of Optoelectronics,Beijing Institute of Technology,Beijing 100081,China

出　　处：《Matter and Radiation at Extremes》2019年第2期36-42,共7页极端条件下的物质与辐射（英文）

基　　金：Natural Science Foundation of China(No.51422501 and 61475020);National Key Research and Development Program of China(No.2016YFF0201005).

摘　　要：Amethod based on the laser differential confocal principle is proposed formeasurement of the uniformity of the inner and outer radius and shell thickness for an inertial confinement fusion(ICF)capsule.Firstly,thismethod uses the laser differential confocalmeasurement system(LDCS)driven by a precision air-bearing slide to scan andmeasure radially theouter radius,R,inner radius,r,andshell thickness,T,accurately.Secondly,a precision air-bearing rotation system is used to drive the capsule to rotate an angle,u,in sequence,and the LDCS is used tomeasure R,r and T at the corresponding angle.Finally,the uniformity of the ICF capsule’s R,r and T can be calculated by the values of R,r and Tmeasured at the position of each rotation angle.Thismethod provides an approach for achieving high-precision,non-destructive,comprehensive,and rapid measurement of the uniformity of the inner and outer radius and shell thickness of an ICF capsule.Preliminary experiments indicate that measurement precision,using the proposed method for the uniformity of the outer radius,shell thickness and inner radius of the capsule,can reach 7.02×10^(25),5.87×10^(24) and 6.52×10^(25),respectively.

关 键 词：RADIUS CONFOCAL ROTATION 

分 类 号：TP3[自动化与计算机技术—计算机科学与技术]