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Title: Diagnostic for determining the mix in inertial confinement fusion capsule hotspot

Abstract

A diagnostic is developed for determining the hotspot mix in inertial confinement fusion experiments. A multi-channel pinhole camera measures Bremsstrahlung emissions from implosion capsules ranging from 6 keV to 30 keV and records an image of the hotspot. Meanwhile, a planar crystal spectrometer measures Ar line emissions used to deduce the electron density of the hotspot. An X-ray streaked camera records the burn duration. With the Bremsstrahlung spectrum, electron density, hotspot volume, and burn duration, the mix quantity is determined by solving a pair of linear equations. This inferred mix amount has an uncertainty due to the uncertainty of the electron density, but with the help of the measured neutron product, the most likely mix quantity value can be determined. This technique is applied to experimental images to infer the quantity of CH ablator mix into the hotspot.

Authors:
; ; ; ; ; ; ; ; ;  [1]
  1. Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang 621900 (China)
Publication Date:
OSTI Identifier:
22600001
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 23; Journal Issue: 7; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; BREMSSTRAHLUNG; CAPSULES; ELECTRON DENSITY; ELECTRONS; IMAGES; IMPLOSIONS; INERTIAL CONFINEMENT; KEV RANGE 10-100; NEUTRONS; SPECTRA; SPECTROMETERS; STREAK CAMERAS; X RADIATION

Citation Formats

He, Shibei, Ding, Yongkun, E-mail: ding-yk@vip.sina.com, Miao, Wenyong, Zhang, Xing, Tu, Shaoyong, Yuan, Yongteng, Pu, Yudong, Yan, Ji, Wei, Minxi, and Yin, Chuansheng. Diagnostic for determining the mix in inertial confinement fusion capsule hotspot. United States: N. p., 2016. Web. doi:10.1063/1.4959114.
He, Shibei, Ding, Yongkun, E-mail: ding-yk@vip.sina.com, Miao, Wenyong, Zhang, Xing, Tu, Shaoyong, Yuan, Yongteng, Pu, Yudong, Yan, Ji, Wei, Minxi, & Yin, Chuansheng. Diagnostic for determining the mix in inertial confinement fusion capsule hotspot. United States. doi:10.1063/1.4959114.
He, Shibei, Ding, Yongkun, E-mail: ding-yk@vip.sina.com, Miao, Wenyong, Zhang, Xing, Tu, Shaoyong, Yuan, Yongteng, Pu, Yudong, Yan, Ji, Wei, Minxi, and Yin, Chuansheng. 2016. "Diagnostic for determining the mix in inertial confinement fusion capsule hotspot". United States. doi:10.1063/1.4959114.
@article{osti_22600001,
title = {Diagnostic for determining the mix in inertial confinement fusion capsule hotspot},
author = {He, Shibei and Ding, Yongkun, E-mail: ding-yk@vip.sina.com and Miao, Wenyong and Zhang, Xing and Tu, Shaoyong and Yuan, Yongteng and Pu, Yudong and Yan, Ji and Wei, Minxi and Yin, Chuansheng},
abstractNote = {A diagnostic is developed for determining the hotspot mix in inertial confinement fusion experiments. A multi-channel pinhole camera measures Bremsstrahlung emissions from implosion capsules ranging from 6 keV to 30 keV and records an image of the hotspot. Meanwhile, a planar crystal spectrometer measures Ar line emissions used to deduce the electron density of the hotspot. An X-ray streaked camera records the burn duration. With the Bremsstrahlung spectrum, electron density, hotspot volume, and burn duration, the mix quantity is determined by solving a pair of linear equations. This inferred mix amount has an uncertainty due to the uncertainty of the electron density, but with the help of the measured neutron product, the most likely mix quantity value can be determined. This technique is applied to experimental images to infer the quantity of CH ablator mix into the hotspot.},
doi = {10.1063/1.4959114},
journal = {Physics of Plasmas},
number = 7,
volume = 23,
place = {United States},
year = 2016,
month = 7
}