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Relative ion expansion velocity in laser-produced plasmasThe spectra of highly ionized titanium, Ti XIII through Ti XXI, and C VI Lyman lines were excited in laser-produced plasmas. The plasma was produced by uniformly irradiating spherical glass microballoons coated with thin layers of titanium and parylene. The 24-beam Omega laser system produced short, 0.6 ns, and high-intensity, 4 x 10 to the 14th W/sq cm, laser pulses at a wavelength of 351 nm. The measured wavelength for the 2p-3s Ti XIII resonance lines had an average shift of + 0.023 A relative to the C VI and Ti XX spectral lines. No shift was found between the C VI, Ti XIX, and Ti XX lines. The shift is attributed to a Doppler effect, resulting from a difference of (2.6 + or - 0.2) x 10 to the 7th cm/s in the expansion velocities of Ti XIX and Ti XX ions compared to Ti XIII ions.
Document ID
19880058614
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Goldsmith, S.
(Maryland Univ. College Park, MD, United States)
Moreno, J. C.
(Maryland Univ. College Park, MD, United States)
Griem, H. R.
(Maryland, University College Park, United States)
Cohen, Leonard
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Richardson, M. C.
(Rochester, University NY, United States)
Date Acquired
August 13, 2013
Publication Date
July 15, 1988
Publication Information
Publication: Journal of Applied Physics
Volume: 64
ISSN: 0021-8979
Subject Category
Plasma Physics
Accession Number
88A45841
Funding Number(s)
CONTRACT_GRANT: DE-AS08-86DP-10554
Distribution Limits
Public
Copyright
Other

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