Revisit of recombination processes of low-charge-state ion generation during picosecond intense laser

Revisit of recombination processes of low-charge-state ion generation during picosecond intense laser–gas interaction

Published:2022-12 Issue:12 Volume:29 Page:123103
ISSN:1070-664X
Container-title:Physics of Plasmas
language:en
Short-container-title:Physics of Plasmas

Author:

Deng Yanqing¹²^ORCID,Zhang Qi¹²^ORCID,Yue Dongning¹²^ORCID,Wei Wenqing¹²^ORCID,Feng Lei³,Cui Ye³,Ma Yanyun²⁴^ORCID,Lu Feng⁵,Yang Yue⁵^ORCID,Huang Zheng⁵,Wu Yuchi²⁵^ORCID,Zhou Weimin²⁵^ORCID,Weng Suming¹²,Liu Feng¹²^ORCID,Chen Min¹²^ORCID,Yuan Xiaohui¹²^ORCID,Zhang Jie¹²⁶^ORCID

Affiliation:

1. Key Laboratory for Laser Plasmas, Ministry of Education, School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, China

2. Collaborative Innovation Center of IFSA, Shanghai Jiao Tong University, Shanghai 200240, China

3. College of Liberal Arts and Science, National University of Defense Technology, Changsha 410073, China

4. College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha 410073, China

5. Science and Technology on Plasma Physics Laboratory, Laser Fusion Research Center, China Academy of Engineering Physics, Mianyang 621900, China

6. Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China

Abstract

The origin of [Formula: see text] ions in picosecond intense laser–gas interaction was experimentally and numerically investigated. A nanosecond laser pulse was used to modulate the plasma condition, which helps to distinguish the origin of the helium ions with different charge states. By comparing the energy spectra of [Formula: see text] and [Formula: see text] ions in the experiments with/without plasma shaping, we found neither ion–atom nor electron–ion recombination is responsible for the [Formula: see text] generation, which is supported by two-dimensional hydrodynamic simulations and theoretical calculations.

Funder

NSAF

Strategic Priority Research Program of the Chinese Academy of Sciences

Publisher

AIP Publishing

Subject

Condensed Matter Physics

Link

https://aip.scitation.org/doi/pdf/10.1063/5.0120751

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