Ion temperature measurements of indirect-drive implosions with the neutron time-of-flight detector on SG-III laser facility

被引：4

作者：

Chen, Zhongjing ^{[1
]}

Zhang, Xing ^{[1
]}

Pu, Yudong ^{[1
]}

Yan, Ji ^{[1
]}

Huang, Tianxuan ^{[1
]}

Jiang, Wei ^{[1
]}

Yu, Bo ^{[1
]}

Chen, Bolun ^{[1
]}

Tang, Qi ^{[1
]}

Song, Zifeng ^{[1
]}

Chen, Jiabin ^{[1
]}

Zhan, Xiayu ^{[1
]}

Liu, Zhongjie ^{[1
]}

Xie, Xufei ^{[1
]}

Jiang, Shaoen ^{[1
]}

Liu, Shenye ^{[1
]}

机构：

[1] China Acad Engn Phys, Res Ctr Laser Fus, Mianyang 621900, Peoples R China

来源：

REVIEW OF SCIENTIFIC INSTRUMENTS | 2018年 / 89卷 / 02期

基金：

中国国家自然科学基金;

关键词：

SPECTRA;

D O I：

10.1063/1.5022767

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

The accuracy of the determination of the burn-averaged ion temperature of inertial confinement fusion implosions depends on the unfold process, including deconvolution and convolution methods, and the function, i.e., the detector response, used to fit the signals measured by neutron time-of-flight (nToF) detectors. The function given by Murphy et al. [Rev. Sci. Instrum. 68(1), 610-613 (1997)] has been widely used in Nova, Omega, and NIF. There are two components, i.e., fast and slow, and the contribution of scattered neutrons has not been dedicatedly considered. In this work, a new function, based on Murphy's function has been employed to unfold nToF signals. The contribution of scattered neutrons is easily included by the convolution of a Gaussian response function and an exponential decay. The ion temperature is measured by nToF with the new function. Good agreement with the ion temperature determined by the deconvolution method has been achieved. Published by AIP Publishing.

引用

页数：6

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