Enhancement of hard x-ray emission from a copper target by multiple shots of femtosecond laser pulses

被引：14

作者：

Hironaka, Y

Fujimoto, Y

Nakamura, KG

Kondo, K

机构：

[1] Tokyo Inst Technol, Mat & Struct Lab, Midori Ku, Yokohama, Kanagawa 2268503, Japan

[2] Natl Inst Mat & Chem Res, Tsukuba, Ibaraki 3058565, Japan

来源：

APPLIED PHYSICS LETTERS | 1999年 / 74卷 / 12期

关键词：

D O I：

10.1063/1.123641

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The x-ray generation from a copper disk target by irradiation of femtosecond laser pulses (42 fs, 4T W in maximum) has been investigated. The intensity of the x rays is enhanced about 100 times by the multiple laser shots on the target. A temporal profile of the x rays consists of two components: a short pulse with a time duration of 6 ps and a pulse with exponential decay. The enhancement of the x rays corresponds to the increase of the short-pulse component. A relationship between the intensity enhancement and morphology of the irradiated target is discussed. (C) 1999 American Institute of Physics. [S0003-6951(99)02612-1].

引用

页码：1645 / 1647

页数：3

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