Plasma Spectroscopy on Hydrogen-Carbon-Oxygen Foam Targets Driven by Laser-Generated Hohlraum Radiation

IF 1.1 4区物理与天体物理 Q4 PHYSICS, APPLIED

Laser and Particle Beams Pub Date : 2022-06-17 DOI:10.1155/2022/3049749

B. Ma, J. Ren, Shaoyi Wang, Xing Wang, S. Yin, Jianhua Feng, Wenqing Wei, Xing Xu, Benzheng Chen, Shisheng Zhang, Zhongfeng Xu, Zhongming Hu, Fang Li, Hao Xu, Taotao Li, Yutian Li, Yingying Wang, LI-RONG Liu, Wei Liu, Q. Fan, Yong Chen, Z. Deng, W. Qi, B. Cui, Weimin Zhou, Zong-qing Zhao, Z. Cao, Yuqiu Gu, Leifeng Cao, R. Cheng, Quan-xi Xue, D. Hoffmann, Yong-tao Zhao

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引用次数: 3

Abstract

The laboratory generation and diagnosis of uniform near-critical-density (NCD) plasmas play critical roles in various studies and applications, such as fusion science, high energy density physics, astrophysics as well as relativistic electron beam generation. Here we successfully generated the quasistatic NCD plasma sample by heating a low-density tri-cellulose acetate (TCA) foam with the high-power-laser-driven hohlraum radiation. The temperature of the hohlraum is determined to be 20 eV by analyzing the spectra obtained with the transmission grating spectrometer. The single-order diffraction grating was employed to eliminate the high-order disturbance. The temperature of the heated foam is determined to be T = 16.8 ± 1.1 eV by analyzing the high-resolution spectra obtained with a flat-field grating spectrometer. The electron density of the heated foam is about N e = 4.0 ± 0.3 × 10 20 cm − 3 under the reasonable assumption of constant mass density.

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激光热腔驱动氢-碳-氧泡沫靶的等离子体光谱研究

均匀近临界密度等离子体的实验室生成和诊断在聚变科学、高能量密度物理、天体物理以及相对论电子束生成等各种研究和应用中起着至关重要的作用。本文利用高功率激光驱动的热腔辐射加热低密度醋酸三纤维素(TCA)泡沫，成功制备了准静态NCD等离子体样品。通过对透射光栅光谱仪测得的光谱进行分析，确定了热腔温度为20 eV。采用单阶衍射光栅消除高阶扰动。通过平场光栅光谱仪的高分辨率光谱分析，确定了加热泡沫的温度为T = 16.8±1.1 eV。在质量密度不变的合理假设下，被加热泡沫的电子密度约为N e = 4.0±0.3 × 10 20 cm−3。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Laser and Particle Beams PHYSICS, APPLIED-

CiteScore

1.90

自引率

11.10%

发文量

审稿时长

1 months

期刊介绍： Laser and Particle Beams is an international journal which deals with basic physics issues of intense laser and particle beams, and the interaction of these beams with matter. Research on pulse power technology associated with beam generation is also of strong interest. Subjects covered include the physics of high energy densities; non-LTE phenomena; hot dense matter and related atomic, plasma and hydrodynamic physics and astrophysics; intense sources of coherent radiation; high current particle accelerators; beam-wave interaction; and pulsed power technology.