X-ray emission from plasma generated by nanosecond laser irradiating tantalum

被引：5

作者：

Torrisi, L ^{[1
]}

Amato, E

机构：

[1] Univ Messina, Dipartimento Fis, Messina, Italy

[2] Ist Nazl Fis Nucl, Lab Nazl Sud, I-95129 Catania, Italy

来源：

RADIATION EFFECTS AND DEFECTS IN SOLIDS | 2005年 / 160卷 / 09期

关键词：

soft X-rays; nanosecond laser; plasma emission; Si(Li) detector;

D O I：

10.1080/10420150500469972

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

A continuum spectrum of X-rays, originating from the interaction of a moderate intensity nanosecond Nd:Yag laser (1064 nm, 9 ns, 30 Hz, 900 mJ, 10(11) W/cm(2)) with metal targets producing plasma, is investigated. The photon emission intensity is particularly high when the plasma expands in a low-pressure gas. The photon energy is measured through selective thin absorber films employed in front of the solid state detector. The temperature of the hot electrons generated from the plasma, responsible for the continuum spectrum emission, is calculated from the fit of the X-ray spectrum with a Maxwellian distribution, and it is about 1-2 keV.

引用

页码：391 / 399

页数：9

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