Fast Electron Generation in Cones with Ultra-Intense Laser Pulses

Journal Article · Fri Dec 07 00:00:00 EST 2007 · Physics of Plasmas

OSTI ID:944330

Mackinnon, A; VanWoerkom, L; Akli, K; Bartal, T; Beg, F; Chawla, S; Chen, C; Chowdhury, E; Freeman, R; Hey, D; Key, M; King, J; Link, A; MacPhee, A; Offermann, D; Ovchinnikov, V; Patel, P; Schumacher, D; Stephens, R; Tsui, Y ; Ma, T

Experimental results from copper cones irradiated with ultra-intense laser light are presented. Spatial images and total yields of Cu K{sub {alpha}} fluorescence were measured as a function of the laser focusing properties. The fluorescence emission extends into the cone approximately 300 {micro}m from the cone tip and cannot be explained by ray tracing including cone wall absorption. In addition the total fluorescence yield from cones is an order of magnitude higher than for equivalent mass foil targets. Indications are that the physics of the laser cone interaction is dominated by preplasma created from the long duration, low energy pre-pulse from the laser.

• Research Organization: Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 944330
• Report Number(s): UCRL-JRNL-237175; PHPAEN; TRN: US200902%%692
• Journal Information: Physics of Plasmas, Vol. 15, Issue 5; ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
ABSORPTION
CONES
COPPER
ELECTRONS
FLUORESCENCE
FOCUSING
LASERS
PHYSICS
TARGETS