Generation of laboratory nanoflares from multiple braided plasma loops
Generation of laboratory nanoflares from multiple braided plasma loops
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从多个编织等离子体环路生成实验室纳米耀斑
DOI:
10.1038/s41550-023-01941-x
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发表时间:
2023
期刊:
影响因子:
14.1
通讯作者:
Bellan, Paul M.
中科院分区:
文献类型:
--
作者:
Zhang, Yang;Pree, Seth;Bellan, Paul M.
Solar flares are intense bursts of electromagnetic radiation accompanied by energetic particles and hard X-rays. They occur when magnetic flux loops erupt in the solar atmosphere. Solar observations detect energetic particles and hard X-rays but cannot reveal the generating mechanism because the particle acceleration happens at a scale smaller than the observation resolution. Thus, details of the cross-scale physics that explain the generation of energetic particles and hard X-rays remain a mystery. Here, we present observations from a laboratory experiment that simulates solar coronal loop physics. Transient, localized 7.6-keV X-ray bursts and a several-kilovolt voltage spike are observed in braided magnetic flux ropes of a 2-eV plasma when the braid strand radius is choked down to be at the kinetic scale by either magnetohydrodynamic (MHD) kink or magnetic Rayleigh–Taylor instabilities. This sequence of observations reveals a cross-scale coupling from MHD to non-MHD physics that is likely responsible for generating solar energetic particles and X-ray bursts. All the essential components of this mechanism have been separately observed in the solar corona.
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影响因子:
8.6
作者:
E. Stenson;P. Bellan
通讯作者:
P. Bellan
DOI:
10.3847/2041-8213/ab6b2d
发表时间:
2020
期刊:
The Astrophysical Journal
影响因子:
--
作者:
Zhang, Yang;Wongwaitayakornkul, Pakorn;Bellan, Paul M.
通讯作者:
Bellan, Paul M.
DOI:
--
发表时间:
1969
期刊:
影响因子:
--
作者:
P. Carlqvist
通讯作者:
P. Carlqvist
DOI:
--
发表时间:
2013
期刊:
Journal of Physical Science and Application
影响因子:
--
作者:
Tohru Tashiro;and Wakako Kakuta
通讯作者:
and Wakako Kakuta
DOI:
--
发表时间:
1973
期刊:
影响因子:
--
作者:
T. H. Stix
通讯作者:
T. H. Stix