Gamma-rays generated from plasmas in the interaction of solid targets withfemtosecond laser pulses

Authors
He, JT Zhang, P Chen, DB Li, ZH Zhang, Y Wang, L Feng, BH Zhang, XL Wei, ZY Li, ZL Tang, XW Zhang, J
Citation
Jt. He et al., Gamma-rays generated from plasmas in the interaction of solid targets withfemtosecond laser pulses, CHIN PHYS L, 15(11), 1998, pp. 816-818
Citations number
27
Categorie Soggetti
Physics
Journal title
CHINESE PHYSICS LETTERS
ISSN journal
0256307X → ACNP
Volume
15
Issue
11
Year of publication
1998
Pages
816 - 818
Database
ISI
SICI code
0256-307X(1998)15:11<816:GGFPIT>2.0.ZU;2-Y
Abstract
The gamma-rays with energies up to 300 keV have been observed from:plasmas produced by femtosecond laser pulses at a focused intensity of 5 x 10(15) W .cm(-2).mu m(2) irradiating Ta, Mo, and Cu targets. By introducing an 8% pr epulse of 70 ps before the main pulse, the fraction of high energy gamma-ra y photons (hv >100 keV) was significantly enhanced relative to low energy p hotons (hv <100 keV).