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Magnetic Reconnection in Plasma under Inertial Confinement Fusion Conditions Driven by Heat Flux Effects in Ohm's Law

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Magnetic Reconnection in Plasma under Inertial Confinement Fusion Conditions Driven by Heat Flux Effects in Ohm's Law. / Joglekar, A. S.; Thomas, A. G. R.; Fox, W. et al.
In: Physical review letters, Vol. 112, No. 10, 105004, 14.03.2014.

Research output: Contribution to Journal/MagazineJournal articlepeer-review

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Joglekar AS, Thomas AGR, Fox W, Bhattacharjee A. Magnetic Reconnection in Plasma under Inertial Confinement Fusion Conditions Driven by Heat Flux Effects in Ohm's Law. Physical review letters. 2014 Mar 14;112(10):105004. doi: 10.1103/PhysRevLett.112.105004

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@article{be6120e2cd4e40baab0f9e0c0aac6eaa,
title = "Magnetic Reconnection in Plasma under Inertial Confinement Fusion Conditions Driven by Heat Flux Effects in Ohm's Law",
abstract = "In the interaction of high-power laser beams with solid density plasma there are a number of mechanisms that generate strong magnetic fields. Such fields subsequently inhibit or redirect electron flows, but can themselves be advected by heat fluxes, resulting in complex interplay between thermal transport and magnetic fields. We show that for heating by multiple laser spots reconnection of magnetic field lines can occur, mediated by these heat fluxes, using a fully implicit 2D Vlasov-Fokker-Planck code. Under such conditions, the reconnection rate is dictated by heat flows rather than Alfvenic flows. We find that this mechanism is only relevant in a high beta plasma. However, the Hall parameter omega(c)tau(ei) can be large so that thermal transport is strongly modified by these magnetic fields, which can impact longer time scale temperature homogeneity and ion dynamics in the system.",
keywords = "LASER-PRODUCED PLASMAS, FIELDS, DISSIPATION, IMPLOSIONS, TRANSPORT, EQUATION",
author = "Joglekar, {A. S.} and Thomas, {A. G. R.} and W. Fox and A. Bhattacharjee",
year = "2014",
month = mar,
day = "14",
doi = "10.1103/PhysRevLett.112.105004",
language = "English",
volume = "112",
journal = "Physical review letters",
issn = "0031-9007",
publisher = "American Physical Society",
number = "10",

}

RIS

TY - JOUR

T1 - Magnetic Reconnection in Plasma under Inertial Confinement Fusion Conditions Driven by Heat Flux Effects in Ohm's Law

AU - Joglekar, A. S.

AU - Thomas, A. G. R.

AU - Fox, W.

AU - Bhattacharjee, A.

PY - 2014/3/14

Y1 - 2014/3/14

N2 - In the interaction of high-power laser beams with solid density plasma there are a number of mechanisms that generate strong magnetic fields. Such fields subsequently inhibit or redirect electron flows, but can themselves be advected by heat fluxes, resulting in complex interplay between thermal transport and magnetic fields. We show that for heating by multiple laser spots reconnection of magnetic field lines can occur, mediated by these heat fluxes, using a fully implicit 2D Vlasov-Fokker-Planck code. Under such conditions, the reconnection rate is dictated by heat flows rather than Alfvenic flows. We find that this mechanism is only relevant in a high beta plasma. However, the Hall parameter omega(c)tau(ei) can be large so that thermal transport is strongly modified by these magnetic fields, which can impact longer time scale temperature homogeneity and ion dynamics in the system.

AB - In the interaction of high-power laser beams with solid density plasma there are a number of mechanisms that generate strong magnetic fields. Such fields subsequently inhibit or redirect electron flows, but can themselves be advected by heat fluxes, resulting in complex interplay between thermal transport and magnetic fields. We show that for heating by multiple laser spots reconnection of magnetic field lines can occur, mediated by these heat fluxes, using a fully implicit 2D Vlasov-Fokker-Planck code. Under such conditions, the reconnection rate is dictated by heat flows rather than Alfvenic flows. We find that this mechanism is only relevant in a high beta plasma. However, the Hall parameter omega(c)tau(ei) can be large so that thermal transport is strongly modified by these magnetic fields, which can impact longer time scale temperature homogeneity and ion dynamics in the system.

KW - LASER-PRODUCED PLASMAS

KW - FIELDS

KW - DISSIPATION

KW - IMPLOSIONS

KW - TRANSPORT

KW - EQUATION

U2 - 10.1103/PhysRevLett.112.105004

DO - 10.1103/PhysRevLett.112.105004

M3 - Journal article

VL - 112

JO - Physical review letters

JF - Physical review letters

SN - 0031-9007

IS - 10

M1 - 105004

ER -