Study of self-generated fields in strongly-shocked, low-density systems using broadband proton radiography

被引：10

作者：

Hua, R. ^{[1
]}

Sio, H. ^{[2
]}

Wilks, S. C. ^{[3
]}

Beg, F. N. ^{[1
]}

McGuffey, C. ^{[1
]}

Bailly-Grandvaux, M. ^{[1
]}

Collins, G. W. ^{[3
]}

Ping, Y. ^{[3
]}

机构：

[1] Univ Calif San Diego, Energy Res Ctr, La Jolla, CA 92093 USA

[2] MIT, Plasma Sci & Fus Ctr, 77 Massachusetts Ave, Cambridge, MA 02139 USA

[3] Lawrence Livermore Natl Lab, 7000 East Ave, Livermore, CA 94550 USA

来源：

APPLIED PHYSICS LETTERS | 2017年 / 111卷 / 03期

关键词：

PLASMA; LASER; WAVE; IMPLOSIONS;

D O I：

10.1063/1.4995226

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report results from experiments on the study of field generation at the shock front in low-density gas configured in quasi-planar geometry using broad-energy proton probing. Experiments were conducted using three long pulse laser beams with a total energy of 6.4 kJ in 2 ns for shock generation and an 850 J, 10 ps short pulse laser to produce broadband protons for radiography. Observations of the deflection pattern of probe protons show the existence of self-generated electric fields at the shock front with the electric potential on the order of 300 V. Analytical and particle tracking methods support this conclusion. Published by AIP Publishing.

引用

页数：5

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