Heating-induced damping of density perturbations in nuclear-reactor-pumped lasers

Journal Article · Sat Nov 30 23:00:00 EST 1991 · Nuclear Science and Engineering; (United States)

OSTI ID:5463900

Torczynski, J R ^[1]

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1. Sandia National Lab., Fluid, Thermal, and Structural Sciences Dept., Albuquerque, NM (US)

This paper reports on a previously reported analytical model describing gas motion in nuclear-reactor- pumped lasers that is extended to incorporate spatially nonuniform initial gas density fields. This model is solved analytically, and the solution is used to study the damping of density perturbations in the gas induced by fission- fragment heating. An approximate scaling relation is found that describes the reduction in the root-mean-square density perturbation in terms of the heating-induced pressure rise normalized by the initial pressure. This damping process is shown to be relatively independent of the spatial frequency of the initial density perturbation field.

• DOE Contract Number: AC04-76DP00789
• OSTI ID: 5463900
• Journal Information: Nuclear Science and Engineering; (United States), Journal Name: Nuclear Science and Engineering; (United States) Vol. 109:4; ISSN 0029-5639; ISSN NSENA
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
426002* -- Engineering-- Lasers & Masers-- (1990-)
ANALYTICAL SOLUTION
DAMPING
DENSITY
DIFFERENTIAL EQUATIONS
DISTURBANCES
EQUATIONS
EQUATIONS OF MOTION
FISSION FRAGMENTS
FLUIDS
GAS LASERS
GASES
HEATING
LASERS
NUCLEAR FRAGMENTS
PARTIAL DIFFERENTIAL EQUATIONS
PHYSICAL PROPERTIES
REACTORS
SCALING LAWS