Zhang L, Chen LM, Yuan DW, Yan WC, Wang ZH, Liu C, Shen ZW, Faenov A, Pikuz T, Skobelev I, Gasilov V, Boldarev A, Mao JY, Li YT, Dong QL, Lu X, Ma JL, Wang WM, Sheng ZM, Zhang J. Enhanced Kα output of Ar and Kr using size optimized cluster target irradiated by high-contrast laser pulses.
OPTICS EXPRESS 2011;
19:25812-25822. [PMID:
22273974 DOI:
10.1364/oe.19.025812]
[Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
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.
Collapse