Ion charge number and flux saturation effects in the corona of a laser-irradiated pellet

Sanz, J. and Sanmartín Losada, Juan Ramón (1983). Ion charge number and flux saturation effects in the corona of a laser-irradiated pellet. "Physics of fluids", v. 26 (n. 11); pp. 3361-3370. ISSN 0031-9171.

Description

Title: Ion charge number and flux saturation effects in the corona of a laser-irradiated pellet
Author/s:
  • Sanz, J.
  • Sanmartín Losada, Juan Ramón
Item Type: Article
Título de Revista/Publicación: Physics of fluids
Date: 1983
Volume: 26
Subjects:
Faculty: E.T.S.I. Aeronáuticos (UPM)
Department: Física Aplicada a la Ingeniería Aeronáutica [hasta 2014]
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

The quasisteady structure of the corona of a laser-irradiated pellet is completely determined for arbitrary Z, (ion charge number} and re/ra (ratio of critical and ablation radii), and for heat-flux saturation factor/above approximately 0.04. The ion-to-electron temperature ratio at rc grows sensibly with Z,; all other quantities depend weakly and nonmonotonically on Z,. For rc /ra close to unity, and all Z, of interest (Z, < 47}, the flow is subsonic at rc. For a given laser power W, flux saturation may decrease (low/) or increase (high/) the ablation pressure Pa relative to the value obtained when saturation is not considered; in some cases a decrease in/with W fixed increases Pa. For intermediate^ ~0.1), Pa cc (W/r* )2/3 p\n\pc = critical density), independently of rc/ra; for/~0.6, Pa «s larger by a factor of about [rc/raf13. For rjra > 1.2 roughly, the mass ablation rate is C{Z,) [{m/kZ.f^Kr^Pl) l,\ independent of pc and/, and barely dependent on Z,(m, is ion mass; k, Boltzmann's constant; K, conductivity coefficient; and C, a tabulated function).

More information

Item ID: 21473
DC Identifier: http://oa.upm.es/21473/
OAI Identifier: oai:oa.upm.es:21473
Deposited by: Biblioteca ETSI Aeronauticos
Deposited on: 30 Oct 2013 07:36
Last Modified: 21 Apr 2016 12:04
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