Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
Aluminium He-β high-resolution spectroscopy and the observation of high field processes. / Woolsey, N. C.; Courtois, C.; Förster, E.; Gregory, C. D.; Hall, I. M.; Howe, J.; Renner, O.; Uschmann, I.
SPECTRAL LINE SHAPES: 18th International Conference on Spectral Line Shapes. Vol. 874 2006. p. 76-86.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
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TY - GEN
T1 - Aluminium He-β high-resolution spectroscopy and the observation of high field processes
AU - Woolsey, N. C.
AU - Courtois, C.
AU - Förster, E.
AU - Gregory, C. D.
AU - Hall, I. M.
AU - Howe, J.
AU - Renner, O.
AU - Uschmann, I.
PY - 2006/12/1
Y1 - 2006/12/1
N2 - Helium-like aluminium (Z=13) plasmas created using long (nanosecond) and short (picosecond) duration laser pulses at intensities between 5 × 1013 and 5 × 1016 W/cm2 were studied using a combination of optical and X-ray spectroscopy methods and computational modeling tools. The experiments were designed to ensure that the K-shell emission spectra from the aluminium plasmas was measured in detail and that the spectra could be reproduced through a combination of hydrodynamic, atomic kinetic, and radiation transport models. Detailed spectral line shapes, with high spectral and spatial resolution, were recorded in an attempt to positively observed single frequency electric fields effects due to the application of a strong laser field, and due to strong laser-driven plasma waves. Spectral line shape modification due to laser-driven plasma waves was observed, yet there is no evidence for direct laser field effects. Experimental procedures and the computational work are outlined, the observation of modulated intensity profiles on the He-β transition and the interpretation based on intra-Stark spectroscopy discussed.
AB - Helium-like aluminium (Z=13) plasmas created using long (nanosecond) and short (picosecond) duration laser pulses at intensities between 5 × 1013 and 5 × 1016 W/cm2 were studied using a combination of optical and X-ray spectroscopy methods and computational modeling tools. The experiments were designed to ensure that the K-shell emission spectra from the aluminium plasmas was measured in detail and that the spectra could be reproduced through a combination of hydrodynamic, atomic kinetic, and radiation transport models. Detailed spectral line shapes, with high spectral and spatial resolution, were recorded in an attempt to positively observed single frequency electric fields effects due to the application of a strong laser field, and due to strong laser-driven plasma waves. Spectral line shape modification due to laser-driven plasma waves was observed, yet there is no evidence for direct laser field effects. Experimental procedures and the computational work are outlined, the observation of modulated intensity profiles on the He-β transition and the interpretation based on intra-Stark spectroscopy discussed.
KW - K-shell spectroscopy
KW - Laser-induced satellites
KW - Laser-produced-plasma
KW - Line shapes
UR - http://www.scopus.com/inward/record.url?scp=33846978743&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:33846978743
SN - 0735403708
SN - 9780735403703
VL - 874
SP - 76
EP - 86
BT - SPECTRAL LINE SHAPES
T2 - SPECTRAL LINE SHAPES: 18th International Conference on Spectral Line Shapes
Y2 - 4 June 2006 through 9 June 2006
ER -