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@ARTICLE{Reich:31495,
author = {Reich, Ch. and Uschmann, I. and Ewald, F. and Düsterer, S.
and Lübcke, A. and Schwoerer, H. and Sauerbrey, R. and
Förster, E. and Gibbon, P.},
title = {{S}patial characteristics of {K} alpha {X}-ray emission
from relativistic femtosecond laser plasmas},
journal = {Physical review / E},
volume = {68},
number = {5},
issn = {1063-651X},
address = {College Park, Md.},
publisher = {APS},
reportid = {PreJuSER-31495},
pages = {056408},
year = {2003},
note = {Record converted from VDB: 12.11.2012},
abstract = {The spatial structure of the Kalpha emission from Ti
targets irradiated with a high intensity femtosecond laser
has been studied using a two-dimensional monochromatic
imaging technique. For laser intensities I<5x10(17) W/cm(2),
the observed spatial structure of the Kalpha emission can be
explained by the scattering of the hot electrons inside the
solid with the help of a hybrid particle-in-cell/Monte Carlo
model. By contrast, at the maximum laser intensity
I=7x10(18) W/cm(2) the half-width of the Kalpha emission was
70 mum compared to a laser-focus half-width of 3 mum.
Moreover, the main Kalpha peak was surrounded by a halo of
weak Kalpha emission with a diameter of 400 mum and the
Kalpha intensity at the source center did not increase with
increasing laser intensity. These three features point to
the existence of strong self-induced fields, which redirect
the hot electrons over the target surface.},
keywords = {J (WoSType)},
cin = {ZAM},
ddc = {530},
cid = {I:(DE-Juel1)VDB62},
pnm = {Betrieb und Weiterentwicklung des Höchstleistungsrechners},
pid = {G:(DE-Juel1)FUEK254},
shelfmark = {Physics, Fluids $\&$ Plasmas / Physics, Mathematical},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000187183600066},
doi = {10.1103/PhysRevE.68.056408},
url = {https://juser.fz-juelich.de/record/31495},
}