Open AccessEnhanced K_α output of Ar and Kr using size optimized cluster target irradiated by high-contrast laser pulses
Author(s) -
Lu Zhang,
Liming Chen,
Dawei Yuan,
Wenchao Yan,
Zhaohua Wang,
Cheng Liu,
Zhongwei Shen,
Anatoly Faenov,
T. A. Pikuz,
I. Yu. Skobelev,
В. А. Гасилов,
A. S. Boldarev,
Jingyi Mao,
Yutong Li,
Quan-Li Dong,
Xin Lü,
Jinglong Ma,
Weimin Wang,
Z. M. Sheng,
Jie Zhang
Publication year - 2011
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.19.025812
Subject(s) - laser , femtosecond , optics , photon , physics , energy conversion efficiency , flux (metallurgy) , argon , cluster (spacecraft) , irradiation , atomic physics , materials science , optoelectronics , nuclear physics , computer science , metallurgy , programming language
We observed that increasing the clusters size and laser pulse contrast can enhance the X-ray flux emitted by femtosecond-laser-driven-cluster plasma. By focusing a high contrast laser (10(-10)) on large argon clusters, high flux Kα-like X-rays (around 2.96 keV) is generated with a total flux of 2.5 × 10(11) photons/J in 4π and a conversion efficiency of 1.2 × 10-4. In the case of large Kr clusters, the best total flux for L-shell X-rays is 5.3 × 1011 photons/J with a conversion efficiency of 1.3 × 10-4 and, for the Kα X-ray (12.7 keV), it is 8 × 10(8) photons/J with a conversion efficiency of 1.6 × 10-6. Using this X-ray source, a single-shot high-performance X-ray imaging is demonstrated.
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