Experimental Observation of Ion-Ion Acoustic Instability Associated with Collisionless Shocks in Laser-produced Plasmas

被引：5

作者：

Jiao, J. L. ^{[1
,2
,3
,4
,5
]}

He, S. K. ^{[1
]}

Zhuo, H. B. ^{[2
,5
]}

Qiao, B. ^{[2
,3
,4
]}

Yu, M. Y. ^{[2
,6
,7
,8
]}

Zhang, B. ^{[1
]}

Deng, Z. G. ^{[1
]}

Lu, F. ^{[1
]}

Zhou, K. N. ^{[1
]}

Wang, X. D. ^{[1
]}

Xie, N. ^{[1
]}

Yang, L. ^{[1
]}

Zhang, F. Q. ^{[1
]}

Zhou, W. M. ^{[1
]}

Gu, Y. Q. ^{[1
,2
,3
,4
]}

机构：

[1] CAEP, Laser Fus Res Ctr, Sci & Technol Plasma Phys Lab, Mianyang 621900, Sichuan, Peoples R China

[2] Shenzhen Technol Univ, Ctr Adv Mat Diagnost Technol, Shenzhen 518118, Peoples R China

[3] Peking Univ, Ctr Appl Phys & Technol, HEDPS, SKLNPT, Beijing 100871, Peoples R China

[4] Peking Univ, Sch Phys, Beijing 100871, Peoples R China

[5] Natl Univ Def Technol, Coll Liberal Art & Sci, Changsha 410073, Hunan, Peoples R China

[6] Zhejiang Univ, Inst Fus Theory & Simulat, Hangzhou 310027, Zhejiang, Peoples R China

[7] Zhejiang Univ, Dept Phys, Hangzhou 310027, Zhejiang, Peoples R China

[8] Ruhr Univ, Inst Theoret Phys 1, D-44780 Bochum, Germany

来源：

ASTROPHYSICAL JOURNAL LETTERS | 2019年 / 883卷 / 02期

基金：

中国国家自然科学基金;

关键词：

EXPERIMENTAL ASTROPHYSICS; PARTICLE-ACCELERATION; SIMULATIONS; ABSORPTION; WAVES; BEAM;

D O I：

10.3847/2041-8213/ab4190

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report experimental evidence of ion-ion acoustic instability in laser-produced astrophysically relevant plasma. Irradiation of a copper foil with a short (2 ps) intense (10(17) W cm(-2)) laser pulse generates dense hot plasma, whose expansion into the rarefied preplasma generates the electrostatic collisionless shock. A shock-reflected ion beam penetrates through the shock upstream excites the ion-ion acoustic instability. The shock oscillation electric field and the instability filamentary modulation are monitored by proton radiography. Particle-in-cell and particle-tracing simulations reproduce the experimental observation.

引用

页数：6

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