Hard x-ray and hot electron production from intense laser irradiation of wavelength-scale particles

被引：30

作者：

Donnelly, TD ^{[1
]}

Rust, M

Weiner, I

Allen, M

Smith, RA

Steinke, CA

Wilks, S

Zweiback, J

Cowan, TE

Ditmire, T

机构：

[1] Harvey Mudd Coll, Dept Phys, Claremont, CA 91711 USA

[2] Univ Calif Berkeley, Dept Nucl Engn, Berkeley, CA 94720 USA

[3] Univ London Imperial Coll Sci Technol & Med, Blackett Lab, London SW7 2AZ, England

[4] Harvard Univ, Lyman Lab, Cambridge, MA 02138 USA

[5] Univ Calif Lawrence Livermore Natl Lab, Lasr Program, Livermore, CA 94550 USA

来源：

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS | 2001年 / 34卷 / 10期

关键词：

D O I：

10.1088/0953-4075/34/10/101

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We have examined the production of hard x-rays from the irradiation of similar to1 mum diameter water droplets with a 35 fs laser at an intensity of up to 7 x 10(17) W cm(-2) We observe substantial x-ray production in the photon energy range above 100 keV and find that the implied hot electron temperatures from these micron-scale targets are significantly higher than electron temperatures observed from irradiation of solid planar plastic targets under nearly identical irradiation conditions, The observed enhancement of the hot electron temperature from droplets is consistent with hot electron spectra calculated from particle-in-cell simulations.

引用

页码：L313 / L320

页数：8

共 16 条

[1]

[Anonymous], 1986, NUCL SCI ENG, DOI DOI 10.13182/NSE86-A18182

[2] Fast-electron transport in high-intensity short-pulse laser-solid experiments [J].