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Spectral Line Intensities for Δ N = 0 (L-Shell) Transitions of N, O, and F-Like Ions

Published online by Cambridge University Press:  12 April 2016

Y.T. Lee  and
K. Reed
Y.T. Lee
Affiliation:
University of California, Lawrence Livermore National Laboratory Livermore, California 94550
K. Reed
Affiliation:
University of California, Lawrence Livermore National Laboratory Livermore, California 94550

Extract

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Many laboratories are actively investigating radiation spectra emitted from high temperature/high density plasmas produced using gas-puff Z-pinch machines and high power lasers. Spectral-line intensities from these plasmas can be useful temperature and density diagnostics. In a well-diagnosed plasma, information on the emission spectrum can also be used to test the accuracy of theoretical rate coefficients.

Recently time-resolved spectra from an oxygen-like argon plasma produced in a gas-puff z-pinch were measured in the wavelength range 150–200 Å . Over this wavelength range the spectrum contains mostly the Δn = 0 (L-shell) transitions in ArX-ArXIV and some weak transitions for n = 3 to n = 4 of ArVI-ArVIII. The measured spectra show the predominance of 0-like Ar L-shell transitions.

Type
Session 7. High Density Laboratory Plasmas
Information
International Astronomical Union Colloquium , Volume 86: Eighth International Colloquium on Ultraviolet and X-ray Spectroscopy of Astrophysical and Laboratory Plasmas , 1984 , pp. 258 - 261
Copyright
Copyright © Naval Research Laboratory 1984. Publication courtesy of the Naval Research Laboratory, Washington, DC.

References

1. Marrs, R.E., Dietrich, D.D., Fortner, R.J., Levine, M.A., Price, D.F., Stewart, R.E., and Young, B.K.F., Ap. Phys. Lett. 42, 946, 1983.CrossRefGoogle Scholar
2. Lee, Y.T., “Ionization Balance in Non-Equilibrium Plasmas,” LLNL H-Division Quarterly Report, UCID-18574-83-3, 1983.Google Scholar
3. Some of the energy levels, oscillator strengths, and collisional strengths used in the calculation were provided to us by U. Feldman.Google Scholar
4. Eissner, W., Jones, M., and Nussbaumer, H., Comp. Phys. Commun. 8, 270, 1974.CrossRefGoogle Scholar
5. Fawcett, B.C., Atomic Data and Nuclear Data Tables 16, 135, 1975.CrossRefGoogle Scholar
6. Eissner, W. and Seaton, M.J., J. Phys. B 5, 2187, 1972.Google Scholar
7. Saraph, H.E., Com. Phys. Comm. 1, 232, 1970.Google Scholar
8. Lee, R.W., Whitten, B.L., and Strout, R.E. II, JQSRT 32, 91, 1984.CrossRefGoogle Scholar