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Short wavelength laser calculations for electron pumping in neon-like krypton (Kr XXVII)Calculations of electron impact collision strengths and spontaneous radiative decay rates are made for neon-like krypton (Kr XXVII) for the 2s2 2p6, 2s2 2p5 3s, 2s2 2p5 3p, and 2s2 2p5 3d configurations. From these atomic data, the level populations as a function of the electron density are calculated at two temperatures, 1 x 10 to the 7th K and 3 x 10 to the 7th K. An analysis of level populations reveals that a volume of krypton in which a significant number of the ions are in the Kr XXVII degree of ionization can produce a significant gain in transition between the 2s2 2p5 3s and 2s2 2p5 3p configurations. At an electron density of 1 x 10 to the 19th/cu cm the plasma length has to be of the order of 1 m; at a density of 1 x 10 to the 21st/cu cm the length is reduced to approximately 0.5 cm; and at an electron density of 1 x 10 to the 22nd/cu cm the length of the plasma is further reduced to approximately 1 mm.
Document ID
19830050159
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Feldman, U. (U.S. Navy, E. O. Hulburt Center for Space Research, Washington DC, United States)
Bhatia, A. K. (NASA Goddard Space Flight Center Laboratory for Astronomy and Solar Physics, Greenbelt, MD, United States)
Suckewer, S. (Princeton University Princeton, NJ, United States)
Date Acquired
August 11, 2013
Publication Date
May 1, 1983
Publication Information
Publication: Journal of Applied Physics
Volume: 54
ISSN: 0021-8979
Subject Category
LASERS AND MASERS
Distribution Limits
Public
Copyright
Other