Influence of Ion Mass on Laser-Energy Absorption and Synchrotron Radiation at Ultrahigh Laser Intensities

被引：53

作者：

Capdessus, R. ^{[1
]}

d'Humieres, E. ^{[1
]}

Tikhonchuk, V. T. ^{[1
]}

机构：

[1] Univ Bordeaux CNRS CEA, CELIA, UMR 5107, F-33400 Talence, France

来源：

PHYSICAL REVIEW LETTERS | 2013年 / 110卷 / 21期

基金：

英国工程与自然科学研究理事会;

关键词：

DRIVEN;

D O I：

10.1103/PhysRevLett.110.215003

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The role of ions in the energy absorption of a short and ultraintense laser pulse and in the synchrotron radiation generated by accelerated electrons is revisited. For laser intensities above 10(22) W/cm(2) and plasma densities more than 10 times the critical density, the ion-to-electron mass ratio strongly affects the energy repartition between the electrons, ions, and radiation. This phenomenon is studied with a one-dimensional relativistic particle-in-cell code, taking into account the radiation reaction force. The choice of the ion mass strongly affects the energy and angular distribution of the photon emission and the electron energy distribution. This effect may be important for laboratory modeling of radiation dominated relativistic astrophysical events. It can be verified in experiments with solid hydrogen targets.

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页数：6

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