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Full Record Details
Persistent URL
http://purl.org/net/epubs/work/36989
Record Status
Checked
Record Id
36989
Title
Possible Langmuir oscillations in the He beta spectral line profile
Contributors
NC Woolsey
,
DM Chambers
,
J Howe
,
C Courtois
,
E Forster
,
CD Gregory
,
IM Hall
,
O Renner
,
I Uschmann
Abstract
A 3.4 ps duration, high-repetition rate laser is used to create an aluminium ablation plasma at intensities between 10(15)W/Cm-2 and 10(17)W/cm(2). K-shell emission is observed from the target surface and several 100 mu m in to the plume. High resolution, spatial resolved measurements of the He beta (1s3p - 1s(2)), He gamma (1s4p - 1s(2)), He delta (I s5p - 1S(2)) and He epsilon (1s6 p - 1s(2)) transitions are obtained using a highly dispersive toroidal crystal spectrometer coupled to a large area charged-coupled device. This data shows unusual intensity modulations on He beta transitions. These oscillations are observed to 50 mu m above the target and are found to be reproducible, and the intensity of the modulations is laser irradiance dependent.
Organisation
CCLRC
,
CLF
Keywords
CLF 2006-2007
Funding Information
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Licence Information:
Language
English (EN)
Type
Details
URI(s)
Local file(s)
Year
Journal Article
J Phys IV
133 (2006): 989-991.
doi:10.1051/jp4:2006133199
2006
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