国家点火装置上与点火相关的黑腔中的热电子测量。

Hot electron measurements in ignition relevant Hohlraums on the National Ignition Facility.

作者信息

Dewald E L, Thomas C, Hunter S, Divol L, Meezan N, Glenzer S H, Suter L J, Bond E, Kline J L, Celeste J, Bradley D, Bell P, Kauffman R L, Kilkenny J, Landen O L

机构信息

Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, California 94550, USA.

出版信息

Rev Sci Instrum. 2010 Oct;81(10):10D938. doi: 10.1063/1.3478683.

DOI:10.1063/1.3478683

PMID:21033965

Abstract

On the National Ignition Facility (NIF), hot electrons generated in laser heated Hohlraums are inferred from the >20 keV bremsstrahlung emission measured with the time integrated FFLEX broadband spectrometer. New high energy (>200 keV) time resolved channels were added to infer the generated >170 keV hot electrons that can cause ignition capsule preheat. First hot electron measurements in near ignition scaled Hohlraums heated by 96-192 NIF laser beams are presented.

摘要

在国家点火装置（NIF）上，通过时间积分FFLEX宽带光谱仪测量的大于20 keV的轫致辐射发射推断出激光加热黑腔中产生的热电子。添加了新的高能（大于200 keV）时间分辨通道，以推断产生的大于170 keV的热电子，这些热电子会导致点火胶囊预热。本文展示了在由96 - 192束NIF激光束加热的接近点火规模的黑腔中的首次热电子测量结果。