Short wavelength laser calculations for electron pumping in neon-like krypton (Kr XXVII)

Journal Article · Sun May 01 00:00:00 EDT 1983 · J. Appl. Phys.; (United States)

DOI:https://doi.org/10.1063/1.332371· OSTI ID:6055012

Feldman, U; Bhatia, A K; Suckewer, S

We present calculations of electron impact collision strengths and spontaneous radiative decay rates for neon-like krypton (Kr XXVII) for the 2s/sup 2/2p/sup 6/, 2s/sup 2/2p/sup 5/3s, 2s/sup 2/2p/sup 5/3p, and 2s/sup 2/2p/sup 5/3d configurations. From these atomic data the level populations as a function of the electron density were calculated at two temperatures (T/sub e/ = 1 x 10/sup 7/ K and T/sub e/ = 3 x 10/sup 7/ K). The analysis of level populations shows 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 transitions between the 2s/sup 2/2p/sup 5/3s and 2s/sup 2/2p/sup 5/3p configurations. At an electron density of 1 x 10/sup 19/ cm/sup -3/ the plasma length has to be on the order of 1 m; at a density of 1 x 10/sup 21/ cm/sup -3/ the length is reduced to about 0.5 cm; and at an electron density of 1 x 10/sup 22/ cm/sup -3/ the length of the plasma is further reduced to about 1 mm.

• Research Organization: E. O. Hulburt Center for Space Research, Naval Research Laboratory, Washington, DC 20375
• OSTI ID: 6055012
• Journal Information: J. Appl. Phys.; (United States), Vol. 54:5
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
GAS LASERS
MATHEMATICAL MODELS
DECAY
ELECTRON DENSITY
ELECTRON-ATOM COLLISIONS
ELECTRONS
ENERGY-LEVEL TRANSITIONS
EXCITATION
IONIZATION
KRYPTON
PLASMA
ATOM COLLISIONS
COLLISIONS
ELECTRON COLLISIONS
ELEMENTARY PARTICLES
ELEMENTS
FERMIONS
FLUIDS
GASES
LASERS
LEPTONS
NONMETALS
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420300* - Engineering- Lasers- (-1989)