SUPERTHERMAL X-RAY-EMISSION FROM CO2-LASER-PRODUCED PLASMAS

被引：24

作者：

ENRIGHT, GD

RICHARDSON, MC

BURNETT, NH

机构：

[1] Division of Physics, National Research Council of Canada, Ottawa

来源：

JOURNAL OF APPLIED PHYSICS | 1979年 / 50卷 / 06期

关键词：

D O I：

10.1063/1.326519

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The high-energy continuum x-ray emission from plasma created by intense (1014 W cm-2) nanosecond 10-μm laser pulses has been characterized. The temperature of the superthermal electron component deduced from this emission was found to be strongly dependent on focus position, while displaying a weaker dependence on irradiation angle, beam polarization, and target composition. The variation of the hot-electron temperature as a function of Iλ2 has been examined in detail in a range of Iλ2 from 1015 to 2×1016 W μm2 cm-2 for various target materials and has been found to be in qualitative agreement with the predictions of current theories of hot-electron production based on resonance absorption.

引用

页码：3909 / 3914

页数：6

共 42 条

[1]

BALMER JE, 1977, PHYS REV LETT, V39, P1084, DOI 10.1103/PhysRevLett.39.1084

[2]

Buchl K., 1972, LASER INTERACTION RE, V2, P503

[3] BACKSCATTER AND BEAM REFRACTION IN UNDERDENSE GAS-BREAKDOWN WITH NANOSECOND CO2-LASER [J].