Modeling of two-dimensional effects in hot spot relaxation in laser-produced plasmas

J. L. Feugeas; Ph Nicola; X. Ribeyre; G. Schurtz; V. Tikhonchuk; M. Grech

doi:10.1063/1.2919791

Modeling of two-dimensional effects in hot spot relaxation in laser-produced plasmas

J. L. Feugeas, Ph Nicola, X. Ribeyre, G. Schurtz, V. Tikhonchuk, M. Grech

Research output: Contribution to journal › Article › peer-review

Abstract

Two-dimensional numerical simulations of plasma heating and temperature hot spots relaxation are presented in the domain where the diffusive approximation for heat transport fails. Under relevant conditions for laser plasma interactions, the effects of the nonlocality of heat transport on the plasma response are studied comparing the Spitzer-Härm model with several frequently used nonlocal models. The importance of using a high-order numerical scheme to correctly model nonlocal effects is discussed. A significant increase of the temperature relaxation time due to nonlocal heat transport is observed, accompanied by enhanced density perturbations. Applications to plasma-induced smoothing of laser beams are considered.

Original language	English
Article number	062701
Journal	Physics of Plasmas
Volume	15
Issue number	6
DOIs	https://doi.org/10.1063/1.2919791
Publication status	Published - 9 Jul 2008
Externally published	Yes

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title = "Modeling of two-dimensional effects in hot spot relaxation in laser-produced plasmas",

abstract = "Two-dimensional numerical simulations of plasma heating and temperature hot spots relaxation are presented in the domain where the diffusive approximation for heat transport fails. Under relevant conditions for laser plasma interactions, the effects of the nonlocality of heat transport on the plasma response are studied comparing the Spitzer-H{\"a}rm model with several frequently used nonlocal models. The importance of using a high-order numerical scheme to correctly model nonlocal effects is discussed. A significant increase of the temperature relaxation time due to nonlocal heat transport is observed, accompanied by enhanced density perturbations. Applications to plasma-induced smoothing of laser beams are considered.",

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AU - Feugeas, J. L.

AU - Nicola, Ph

AU - Ribeyre, X.

AU - Schurtz, G.

AU - Tikhonchuk, V.

AU - Grech, M.

PY - 2008/7/9

Y1 - 2008/7/9

N2 - Two-dimensional numerical simulations of plasma heating and temperature hot spots relaxation are presented in the domain where the diffusive approximation for heat transport fails. Under relevant conditions for laser plasma interactions, the effects of the nonlocality of heat transport on the plasma response are studied comparing the Spitzer-Härm model with several frequently used nonlocal models. The importance of using a high-order numerical scheme to correctly model nonlocal effects is discussed. A significant increase of the temperature relaxation time due to nonlocal heat transport is observed, accompanied by enhanced density perturbations. Applications to plasma-induced smoothing of laser beams are considered.

AB - Two-dimensional numerical simulations of plasma heating and temperature hot spots relaxation are presented in the domain where the diffusive approximation for heat transport fails. Under relevant conditions for laser plasma interactions, the effects of the nonlocality of heat transport on the plasma response are studied comparing the Spitzer-Härm model with several frequently used nonlocal models. The importance of using a high-order numerical scheme to correctly model nonlocal effects is discussed. A significant increase of the temperature relaxation time due to nonlocal heat transport is observed, accompanied by enhanced density perturbations. Applications to plasma-induced smoothing of laser beams are considered.

U2 - 10.1063/1.2919791

DO - 10.1063/1.2919791

M3 - Article

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SN - 1070-664X

VL - 15

JO - Physics of Plasmas

JF - Physics of Plasmas

IS - 6

M1 - 062701

ER -

Modeling of two-dimensional effects in hot spot relaxation in laser-produced plasmas

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