Experimental study of proton emission from 60-fs, 200-mJ high-repetition-rate tabletop-laser pulses interacting with solid targets

I Spencer; K W D Ledingham; P McKenna; T McCanny; R P Singhal; P S Foster; D Neely; A J Langley; E J Divall; C J Hooker; R J Clarke; P A Norreys; E L Clark; K Krushelnick; J R Davies

doi:10.1103/PhysRevE.67.046402

Experimental study of proton emission from 60-fs, 200-mJ high-repetition-rate tabletop-laser pulses interacting with solid targets

Phys Rev E Stat Nonlin Soft Matter Phys. 2003 Apr;67(4 Pt 2):046402. doi: 10.1103/PhysRevE.67.046402. Epub 2003 Apr 24.

Authors

I Spencer¹, K W D Ledingham, P McKenna, T McCanny, R P Singhal, P S Foster, D Neely, A J Langley, E J Divall, C J Hooker, R J Clarke, P A Norreys, E L Clark, K Krushelnick, J R Davies

Affiliation

¹ Department of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, United Kingdom.

PMID: 12786496
DOI: 10.1103/PhysRevE.67.046402

Abstract

Measurements of proton emission have been made from a variety of solid targets irradiated by a 60-fs, 200-mJ, 7 x 10(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 microm, a maximum proton energy of 1.5 MeV was measured. For aluminum targets, a maximum energy of 950 keV was measured for 12 microm, and for copper, 850 keV for 12.5 microm.