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Time-resolved x-ray spectroscopy of optical-field-ionized plasmas

Borgstrom, S; Fill, E; Starczewski, T; Steingruber, J; Svanberg, Sune LU and Wahlström, Claes-Göran LU (1995) In Laser and Particle Beams 13(4). p.459-468
Abstract
The time-dependent soft X-ray emission of helium and nitrogen plasmas generated by optical-field ionization is reported. The experiments were carried out by focusing pulses of the high-power Ti:sapphire laser of the Lund Institute of Technology (lambda = 796 nm, pulse duration 150 fs, pulse energy 150 mJ) to a 50-mu m diameter spot close to a nozzle, using He and N-2 as target gases. The emission on He+, N4+, and N3+ resonance lines was recorded by means of a flat-field grating spectrometer coupled to an X-ray streak camera. A pronounced difference in the temporal shape of the emission of the Lyman-alpha line of hydrogen-like helium and of the 2p-3d resonance lines of lithium-like and beryllium-like nitrogen was observed. The helium line... (More)
The time-dependent soft X-ray emission of helium and nitrogen plasmas generated by optical-field ionization is reported. The experiments were carried out by focusing pulses of the high-power Ti:sapphire laser of the Lund Institute of Technology (lambda = 796 nm, pulse duration 150 fs, pulse energy 150 mJ) to a 50-mu m diameter spot close to a nozzle, using He and N-2 as target gases. The emission on He+, N4+, and N3+ resonance lines was recorded by means of a flat-field grating spectrometer coupled to an X-ray streak camera. A pronounced difference in the temporal shape of the emission of the Lyman-alpha line of hydrogen-like helium and of the 2p-3d resonance lines of lithium-like and beryllium-like nitrogen was observed. The helium line exhibited an initial spike followed by a slow revival of the emission, whereas the nitrogen lines showed a slow decay after a fast initial rise. These observations are explained with the help of simulations. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Laser and Particle Beams
volume
13
issue
4
pages
459 - 468
publisher
Cambridge University Press
external identifiers
  • Scopus:6244225846
ISSN
0263-0346
DOI
10.1017/S0263034600009605
language
English
LU publication?
yes
id
b72d41b1-772a-419e-94a0-06269f966d5c (old id 2257666)
date added to LUP
2012-02-23 21:46:19
date last changed
2017-01-01 07:50:09
@article{b72d41b1-772a-419e-94a0-06269f966d5c,
  abstract     = {The time-dependent soft X-ray emission of helium and nitrogen plasmas generated by optical-field ionization is reported. The experiments were carried out by focusing pulses of the high-power Ti:sapphire laser of the Lund Institute of Technology (lambda = 796 nm, pulse duration 150 fs, pulse energy 150 mJ) to a 50-mu m diameter spot close to a nozzle, using He and N-2 as target gases. The emission on He+, N4+, and N3+ resonance lines was recorded by means of a flat-field grating spectrometer coupled to an X-ray streak camera. A pronounced difference in the temporal shape of the emission of the Lyman-alpha line of hydrogen-like helium and of the 2p-3d resonance lines of lithium-like and beryllium-like nitrogen was observed. The helium line exhibited an initial spike followed by a slow revival of the emission, whereas the nitrogen lines showed a slow decay after a fast initial rise. These observations are explained with the help of simulations.},
  author       = {Borgstrom, S and Fill, E and Starczewski, T and Steingruber, J and Svanberg, Sune and Wahlström, Claes-Göran},
  issn         = {0263-0346},
  language     = {eng},
  number       = {4},
  pages        = {459--468},
  publisher    = {Cambridge University Press},
  series       = {Laser and Particle Beams},
  title        = {Time-resolved x-ray spectroscopy of optical-field-ionized plasmas},
  url          = {http://dx.doi.org/10.1017/S0263034600009605},
  volume       = {13},
  year         = {1995},
}