Heat transport and electron distribution function in laser produced plasmas with hot spots

O. V. Batishchev; V. Yu Bychenkov; F. Detering; W. Rozmus; R. Sydora; C. E. Capjack; V. N. Novikov

doi:10.1063/1.1461385

Heat transport and electron distribution function in laser produced plasmas with hot spots

O. V. Batishchev^*, V. Yu Bychenkov, F. Detering, W. Rozmus, R. Sydora, C. E. Capjack, V. N. Novikov

^*Corresponding author for this work

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

41 Citations (Scopus)

Abstract

Using Fokker-Planck and particle-in-cell simulations, the evolution of a single hot spot and multiple hot spot systems have been studied in laser produced plasmas. A practical formula for nonlocal heat flux has been derived as a generalized expression of a nonlocal linear approach [Bychenkov et al., Phys. Rev. Lett. 75, 4405 (1995)] and is tested in simulations. The electron distribution function is studied at different spatial locations with respect to a localized heating source. The electron distribution function displays several non-Maxwellian features which depend on the interplay between the effects of inverse bremsstrahlung heating and nonlocal transport. In particular, significant high-energy tails are found. They may have impact on the behavior of parametric instabilities in nonuniformly heated laser plasma.

Original language	English
Pages (from-to)	2302-2310
Number of pages	9
Journal	Physics of Plasmas
Volume	9
Issue number	5
DOIs	https://doi.org/10.1063/1.1461385
Publication status	Published - May 2002
Externally published	Yes

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title = "Heat transport and electron distribution function in laser produced plasmas with hot spots",

abstract = "Using Fokker-Planck and particle-in-cell simulations, the evolution of a single hot spot and multiple hot spot systems have been studied in laser produced plasmas. A practical formula for nonlocal heat flux has been derived as a generalized expression of a nonlocal linear approach [Bychenkov et al., Phys. Rev. Lett. 75, 4405 (1995)] and is tested in simulations. The electron distribution function is studied at different spatial locations with respect to a localized heating source. The electron distribution function displays several non-Maxwellian features which depend on the interplay between the effects of inverse bremsstrahlung heating and nonlocal transport. In particular, significant high-energy tails are found. They may have impact on the behavior of parametric instabilities in nonuniformly heated laser plasma.",

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AU - Batishchev, O. V.

AU - Bychenkov, V. Yu

AU - Detering, F.

AU - Rozmus, W.

AU - Sydora, R.

AU - Capjack, C. E.

AU - Novikov, V. N.

PY - 2002/5

Y1 - 2002/5

N2 - Using Fokker-Planck and particle-in-cell simulations, the evolution of a single hot spot and multiple hot spot systems have been studied in laser produced plasmas. A practical formula for nonlocal heat flux has been derived as a generalized expression of a nonlocal linear approach [Bychenkov et al., Phys. Rev. Lett. 75, 4405 (1995)] and is tested in simulations. The electron distribution function is studied at different spatial locations with respect to a localized heating source. The electron distribution function displays several non-Maxwellian features which depend on the interplay between the effects of inverse bremsstrahlung heating and nonlocal transport. In particular, significant high-energy tails are found. They may have impact on the behavior of parametric instabilities in nonuniformly heated laser plasma.

AB - Using Fokker-Planck and particle-in-cell simulations, the evolution of a single hot spot and multiple hot spot systems have been studied in laser produced plasmas. A practical formula for nonlocal heat flux has been derived as a generalized expression of a nonlocal linear approach [Bychenkov et al., Phys. Rev. Lett. 75, 4405 (1995)] and is tested in simulations. The electron distribution function is studied at different spatial locations with respect to a localized heating source. The electron distribution function displays several non-Maxwellian features which depend on the interplay between the effects of inverse bremsstrahlung heating and nonlocal transport. In particular, significant high-energy tails are found. They may have impact on the behavior of parametric instabilities in nonuniformly heated laser plasma.

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Heat transport and electron distribution function in laser produced plasmas with hot spots

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