Ultraintense laser-produced fast-electron propagation in gas jets

被引：38

作者：

Batani, D ^{[1
]}

Baton, SD

Manclossi, M

Santos, JJ

Amiranoff, F

Koenig, M

Martinolli, E

Antonicci, A

Rousseaux, C

Le Gloahec, MR

Hall, T

Malka, V

Cowan, TE

King, J

Freeman, RR

Key, M

Stephens, R

机构：

[1] Univ Milan, Dipartimento Fis G Occhialini, I-20122 Milan, Italy

[2] Univ Milan, INFM, I-20122 Milan, Italy

[3] Ecole Polytech, CNRS, UMR 7605,CEA X Paris 6, Lab Utilisat Lasers Intenses, Palaiseau, France

[4] Commissariat Energie Atom, Bruyeres Le Chatel, France

[5] Univ Essex, Colchester CO4 3SQ, Essex, England

[6] Ecole Polytech, CNRS, UMR ENSTA, Lab Opt Appl, Palaiseau, France

[7] Univ Nevada, Reno, NV 89557 USA

[8] Univ Calif Davis, Dept Appl Sci, Davis, CA 95616 USA

[9] Lawrence Livermore Natl Lab, Livermore, CA USA

[10] Gen Atom Co, Energy Grp, Inertial Fus Technol Div, San Diego, CA 92121 USA

来源：

PHYSICAL REVIEW LETTERS | 2005年 / 94卷 / 05期

关键词：

D O I：

10.1103/PhysRevLett.94.055004

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study the propagation of fast electrons in a gas at different densities. A large relativistic electron current is produced by focusing a short-pulse ultrahigh-intensity laser on a metallic target. It then propagates in a gas jet placed behind the foil. Shadowgraphy in the gas shows an electron cloud moving at sub-relativistic average velocities. The experiment shows (i) the essential role of the density of background material for allowing propagation of fast electrons, (ii) the importance of the ionization phase which produces free electrons available for the return current, and (iii) the effect of electrostatic fields on fast-electron propagation.

引用

页码：1 / 4

页数：4

共 31 条

[1] On the motion of cosmic rays in interstellar space [J].