Diagnosis of hot electron temperature by ratio of Kα lines from two-layer fluorescent target

cai juanjuan; huang wenzhong; gu yuqiu; dong kegong; wu yuchi; zhu bin; wang xiaofang

Volume 23 Issue 05

Nov. 2012

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Article Navigation > High Power Laser and Particle Beams > 2011 > 23(05): 0-

qin feng, ding enyan, song falun, et al. Particle simulation and experimental research of glow discharge cavity of pseudospark switches[J]. High Power Laser and Particle Beams, 2011, 23.

Citation:

cai juanjuan, huang wenzhong, gu yuqiu, et al. Diagnosis of hot electron temperature by ratio of Kα lines from two-layer fluorescent target[J]. High Power Laser and Particle Beams, 2011, 23.

qin feng, ding enyan, song falun, et al. Particle simulation and experimental research of glow discharge cavity of pseudospark switches[J]. High Power Laser and Particle Beams, 2011, 23.

Citation:

cai juanjuan, huang wenzhong, gu yuqiu, et al. Diagnosis of hot electron temperature by ratio of Kα lines from two-layer fluorescent target[J]. High Power Laser and Particle Beams, 2011, 23.

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Diagnosis of hot electron temperature by ratio of Kα lines from two-layer fluorescent target

1.
National Key Laboratory for Laser Fusion,Research Center of Laser Fusion,CAEP,P.O.Box 919-986,Mianyang 621900,China;
2.
CAS Key Laboratory of Basic Plasma Physics,Department of Modern Physics,University of Science and Technology of China,Hefei 230026,China

Publish Date: 2011-05-11

Abstract

Abstract

An approach for fast ignition of laser fusion is to use hot electrons for heating, and the temperature is an important parameter to characterize the hot electrons. The temperature of the hot electrons is diagnosed by experimentally measuring the intensity ratio of Kα characteristic lines emitted from a two-layer fluorescent target in combination with a Monte-Carlo simulation. The temperature of the hot electrons measured with this method is compared with that directly measured by a magnetic spectrometer for the same shot, and a good agreement is obtained. The results show that, by choosing appropriate fluorescent layer materials and target thickness, the temperature of the hot electrons inside the target can be measured by the intensity ratio of the Kα characteristic lines.
- ultrashort ultraintense laser,
- solid target,
- hot electrons,
- kα characteristic line

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