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Persistent URL http://purl.org/net/epubs/work/36989
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Record Id 36989
Title Possible Langmuir oscillations in the He beta spectral line profile
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
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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