NDLI: e-PLAS analysis of short pulse laser-matter interaction experiments

Content Provider	IEEE Xplore Digital Library
Author	Mason, R. J. Wei, M. Beg, F. Stephens, R. B. Snell, C. M.
Copyright Year	2007
Description	Author affiliation: Research Applications Corporation, Los Alamos, NM 87544, USA (Mason, R. J.) \|\| Los Alamos National Laboratory, NM 87545, USA (Snell, C. M.) \|\| General Atomics, San Diego, CA 92121, USA (Stephens, R. B.) \|\| University of California, San Diego, 92093, USA (Beg, F.)
Abstract	The transport of relativistic $electrons^{1}$ generated in wire and foil targets by short-pulse lasers is examined with the new e-PLAS simulation code based on $implicit-moment/hybrid^{2}$ techniques. In a 50 μm diameter Cu wire (Z = 15) as recently illuminated on the TITAN LLNL laser, for example, a $1.7×10^{20}$ $W/cm^{2}$ simulated laser beam delivering a flat 30 μm spot from the left (with 40 % absorption) generates the hot electron density profile depicted below at 940 fs. The peak hot density in the laser spot is $∼3×10^{21}$ $electrons/cm^{3}.$ This density drops to $3x10^{19}$ $electrons/cm^{3}$ 200 microns into the wire. A peak temperature of 2 keV is achieved through Joule heating of the background electrons in the wire “head” near the deposition surface; a significantly lower ∼0.4 keV is achieved in the wire body. Here, 300 MG thermoelectric B-fields are also calculated. Parameter studies relate the hot electron stopping to the surface B-field, modest drag slowing, and the background cold electron resisitvity, which is bleached by background heating to low values at late times.
Starting Page	1387
Ending Page	1390
File Size	561964
Page Count	4
File Format	PDF
ISBN	9781424409136
DOI	10.1109/PPPS.2007.4652446
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-06-17
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Wire Heating Surface emitting lasers Magnetic heads Nails Lasers Plasma temperature
Content Type	Text
Resource Type	Article

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