MeV &ggr;-ray yield from solid targets irradiated with fs-laser pulses
作者:
C. Gahn,
G. Pretzler,
A. Saemann,
G. D. Tsakiris,
K. J. Witte,
D. Gassmann,
T. Scha¨tz,
U. Schramm,
P. Thirolf,
D. Habs,
期刊:
Applied Physics Letters
(AIP Available online 1998)
卷期:
Volume 73,
issue 25
页码: 3662-3664
ISSN:0003-6951
年代: 1998
DOI:10.1063/1.122855
出版商: AIP
数据来源: AIP
摘要:
We have investigated the MeV bremsstrahlung which is emitted when fast electrons generated by the interaction of 200 mJ, 130 fs Ti:sapphire laser pulses with a preformed plasma penetrate into a solid target. Employing different targets the dependence of the&ggr;-rayspectrum on the atomic number was studied. We detected single &ggr; photons with an energy up to 2.5 MeV and found a maximum conversion efficiency of the laser energy into MeV bremsstrahlung of4×10−6.Data analysis using a Monte Carlo code revealed a fast-electron temperature of 0.9 MeV.©1998 American Institute of Physics.
点击下载:
PDF
(223KB)
返 回