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  • Vol. 9, Iss. 5 — May. 1, 1984
  • pp: 168–170

Quasi-metastable quartet levels in alkalilike atoms and ions

S. E. Harris, D. J. Walker, R. G. Caro, A. J. Mendelsohn, and R. D. Cowan  »View Author Affiliations


Optics Letters, Vol. 9, Issue 5, pp. 168-170 (1984)
http://dx.doi.org/10.1364/OL.9.000168


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Abstract

We describe the properties of as subclass of quartet levels of alkalilike atoms and ions that often retain metastability against autoionization and may have large radiative yields. Gain cross sections for XUV lasers with wavelengths between 20 and 100 nm are given.

© 1984 Optical Society of America

History
Original Manuscript: January 5, 1984
Manuscript Accepted: February 14, 1984
Published: May 1, 1984

Citation
S. E. Harris, R. D. Cowan, D. J. Walker, R. G. Caro, and A. J. Mendelsohn, "Quasi-metastable quartet levels in alkalilike atoms and ions," Opt. Lett. 9, 168-170 (1984)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-9-5-168


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References

  1. P. Feldman, R. Novick, “Autoionizing states in the alkali atoms with microsecond lifetimes,” Phys. Rev. 160, 143 (1967). [CrossRef]
  2. S. E. Harris, “Proposal for a 207-Å laser in lithium,” Opt. Lett. 5, 1 (1980); and J. E. Rothenberg, S. E. Harris, “XUV lasers by quartet to doublet energy transfer in alkali atoms,” IEEE J. Quantum Electron. QE-17, 418 (1981). [CrossRef] [PubMed]
  3. R. D. Cowan, The Theory of Atomic Structure and Spectra (U. California Press, Berkeley, Calif., 1981), Secs. 8-1, 16-1, and 18-7.
  4. J. P. Connerade, M. W. D. Mansfield, G. H. Newsom, D. H. Tracy, M. A. Baig, K. Thimm, “A study of 5p excitation in atomic barium. I. The 5p absorption spectra of Ba I, Cs I and related elements,” Phil. Trans. R. Soc. London Ser. A 290, 327 (1979); S. J. Rose, I. P. Grant, J. P. Connerade, “A study of 5p excitation in atomic barium. II. A fully relativistic analysis of 5p excitation in atomic barium,” Phil. Trans. R. Soc. London Ser. A 296, 41 (1980). [CrossRef]
  5. I. S. Aleksakhin, G. G. Bogachev, I. P. Zapesochnyl, S. Yu. Ugrin, “Experimental investigations of radiative decay of autoionizing states of alkali and alkaline earth elements,” Sov. Phys. JETP 53, 1140 (1981).
  6. Yu. V. Zhmenyak, V. S. Vukstich, I. P. Zapesochnyl, “Radiative decay of Na I autoionization states excited in electron–atom collisions,” Pis’ma Zh. Eksp. Teor. Fiz. 35, 321 (1982).
  7. E. J. McGuire, “The L-MM Auger spectra of Na and Mg,” Phys. Rev. A 14, 1402 (1976). [CrossRef]
  8. R. G. Caro, J. C. Wang, R. W. Falcone, J. F. Young, S. E. Harris, “Soft x-ray pumping of metastable levels of Li+,” Appl. Phys. Lett. 42, 9 (1983). [CrossRef]
  9. W. T. Silfvast, J. J. Macklin, O. R. Wood, “High-gain inner-shell photoionization laser in Cd vapor pumped by soft-x-ray radiation from a laser-produced plasma source,” Opt. Lett. 8, 551 (1983). [CrossRef] [PubMed]

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