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Full Record Details
Persistent URL
http://purl.org/net/epubs/work/37290
Record Status
Checked
Record Id
37290
Title
Radiation transfer effects on the spectra of laser-generated plasmas
Contributors
O Renner
,
FM Kerr
,
E Wolfrum
,
J Hawreliak
,
D Chambers
,
SJ Rose
,
JS Wark
,
HA Scott
,
P Patel
Abstract
Experimental x-ray spectra of the H-like 2p -> 1s (Lyman-alpha) doublet have been obtained using time-integrated high-resolution spectroscopy of a constrained-flow, laser-generated aluminum plasma. These spectra show monotonic alteration of the relative intensities of the doublet components with distance from the target surface. Excellent agreement between experiment and theory is found only if the modeling includes both ion collisional rates between the fine-structure components of the n=2 level and, more importantly, the radiative pumping of one Lyman-alpha component by the other component along the direction of the major velocity gradient (i.e., perpendicular to the direction of spectra observation). Understanding radiation transfer in plasmas with high velocity gradients is important in modeling many astrophysical objects, and this experiment acts as a benchmark for such complex calculations.
Organisation
CCLRC
,
CLF
Keywords
CLF 2006-2007
Funding Information
Related Research Object(s):
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Language
English (EN)
Type
Details
URI(s)
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Year
Journal Article
Phys Rev Lett
96, no. 18 (2006): 185002.
doi:10.1103/PhysRevLett.96.185002
2006
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