Enhanced K-shell x-ray line emissions from aluminum plasma created by a pair of femtosecond laser pulses

被引：19

作者：

Nakano, H ^{[1
]}

Nishikawa, T ^{[1
]}

Uesugi, N ^{[1
]}

机构：

[1] NTT, Basic Res Labs, Kanagawa 2430198, Japan

来源：

APPLIED PHYSICS LETTERS | 2001年 / 79卷 / 01期

关键词：

D O I：

10.1063/1.1383571

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The influence of an ultrashort prepulse on K-shell x-ray line emissions from Al plasma produced by 100 fs Ti:sapphire laser pulses is studied. By introducing an independent 100 fs prepulse, a more than 20-fold enhancement in K-shell emission was achieved. We could experimentally optimize K-alpha and He-alpha line emissions. In case of oblique incidence, resonance absorption made it possible to maximize K-alpha emission while keeping pulse duration short. On the other hand, He-alpha line emission was maximized when a separation between two laser pulses was large, resulting in pulse broadening (similar to 30 ps). (C) 2001 American Institute of Physics.

引用

页码：24 / 26

页数：3

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