Open AccessCharge-exchange X-Ray Signature in Laboratory Outflow Interaction with Neutrals
Author(s) -
G. Y. Liang,
Huigang Wei,
Ding Yuan,
Jiayong Zhong,
Z. Zhang,
Chengyu Wang,
Bo Han,
Wei Sun,
Xunhui Yuan,
Zhen Xie,
Jie Xiong,
R. Hutton,
Bin Zhu,
Jianqiang Zhu,
Xiaolong Zhu,
Wei Cui,
Yong Wu,
X. W.,
Yilin Li,
Gang Zhao,
J. Zhang
Publication year - 2022
Publication title -
astrophysical journal/the astrophysical journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.376
H-Index - 489
eISSN - 1538-4357
pISSN - 0004-637X
DOI - 10.3847/1538-4357/ac3de8
Subject(s) - physics , outflow , plasma , dimensionless quantity , astrophysics , spectral line , electron , shock (circulatory) , charge exchange , atomic physics , herbig–haro object , shock wave , jet (fluid) , emission spectrum , computational physics , astronomy , ion , nuclear physics , mechanics , medicine , quantum mechanics , meteorology
According to the principle of Euler similarity between laboratory and astrophysical plasmas, laboratory plasmas driven by high-power lasers have been used to simulate some aspects of astrophysical phenomena. And in doing so, they aid our understanding of shock heating, interaction structures, and the consequential evolution for astrophysical outflows within a short timescale (∼ns). In this work, we experimentally investigated the mechanism of X-ray emission originating from a hot outflow (plasma) with a velocity of around 330 km s −1 , impinging on a cold medium. A hybrid model was set up to understand the high-resolution X-ray spectra taken at the interaction region and to deduce that charge exchange takes place in such a laboratory miniature of astrophysical outflow interacting with dense molecular clouds, as in the cases of HH 248 and Cap in M82, for example. Effects from targets with multiple electrons are also explored. A brief analysis has been performed for our laboratory analog and astrophysical objects by a dimensionless ratio of the length scale between X-ray-emitting and charge-exchange regions.