[4] Univ London Imperial Coll Sci Technol & Med, Blackett Lab, London SW7 2BZ, England
[5] Inst Super Tecn, GoLP, P-1049001 Lisbon, Portugal
来源:
PHYSICAL REVIEW E
|
2003年
/
67卷
/
04期
关键词:
D O I:
10.1103/PhysRevE.67.046402
中图分类号:
O35 [流体力学];
O53 [等离子体物理学];
学科分类号:
070204 ;
080103 ;
080704 ;
摘要:
Measurements of proton emission have been made from a variety of solid targets irradiated by a 60-fs, 200-mJ, 7x10(18)-W cm(-2) laser system operating at 2 Hz. Optimum target conditions were found in terms of target material and thickness. For Mylar targets of thickness 20-40 mum, a maximum proton energy of 1.5 MeV was measured. For aluminum targets, a maximum energy of 950 keV was measured for 12 mum, and for copper, 850 keV for 12.5 mum.