Growth rates of the ablative Rayleigh–Taylor instability in inertial confinement fusion

Autor:	Riccardo Betti, R. L. McCrory, C. P. Verdon, Valeri Goncharov
Rok vydání:	1998
Předmět:	Physics Plasma Mechanics Condensed Matter Physics Thermal conduction Instability symbols.namesake Acceleration Classical mechanics Froude number symbols Isobaric process Rayleigh–Taylor instability Inertial confinement fusion
Zdroj:	Physics of Plasmas. 5:1446-1454
ISSN:	1089-7674 1070-664X
Popis:	A simple procedure is developed to determine the Froude number Fr, the effective power index for thermal conduction ν, the ablation-front thickness L0, the ablation velocity Va, and the acceleration g of laser-accelerated ablation fronts. These parameters are determined by fitting the density and pressure profiles obtained from one-dimensional numerical simulations with the analytic isobaric profiles of Kull and Anisimov [Phys. Fluids 29, 2067 (1986)]. These quantities are then used to calculate the growth rate of the ablative Rayleigh–Taylor instability using the theory developed by Goncharov et al. [Phys. Plasmas 3, 4665 (1996)]. The complicated expression of the growth rate (valid for arbitrary Froude numbers) derived by Goncharov et al. is simplified by using reasonably accurate fitting formulas.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::18b28ed87986bb683281ed325aaf8c8b https://doi.org/10.1063/1.872802 Zobrazit plný text záznamu