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A quasi-linear model of particle, momentum and heat transport in a stochastic magnetic field

Published online by Cambridge University Press:  28 September 2023

P. Zanca Open the ORCID record for P. Zanca [Opens in a new window] ,
I. Predebon ,
R. Paccagnella  and
F. Sattin
P. Zanca*
Affiliation:
Consorzio RFX (CNR, ENEA, INFN, Università di Padova, Acciaierie Venete Spa), Padova, 35100, Italy
I. Predebon
Affiliation:
Consorzio RFX (CNR, ENEA, INFN, Università di Padova, Acciaierie Venete Spa), Padova, 35100, Italy
R. Paccagnella
Affiliation:
Consorzio RFX (CNR, ENEA, INFN, Università di Padova, Acciaierie Venete Spa), Padova, 35100, Italy
F. Sattin
Affiliation:
Consorzio RFX (CNR, ENEA, INFN, Università di Padova, Acciaierie Venete Spa), Padova, 35100, Italy
*
† Email address for correspondence: [email protected]
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Abstract

We present a quasi-linear treatment of the drift-kinetic equation in the presence of a stochastic magnetic field, which provides a self-contained description of particle, parallel momentum and heat transport. Explicit analytical expressions, which satisfy the Onsager reciprocal relations, are obtained by approximating the distribution function by a local shifted Maxwellian. This theory completes previous formulations (Harvey et al., Phys. Rev. Lett., vol. 47, 1981, p. 102) by including the momentum transport and by generalizing the derivation from the cylindrical tokamak configuration to an arbitrary cylindrical pinch. Application to the reversed field pinch provides satisfactory results.

Keywords

plasma nonlinear phenomenaplasma instabilitiesplasma dynamics
Type
Research Article
Information
Journal of Plasma Physics , Volume 89 , Issue 5 , October 2023 , 905890509
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Copyright
Copyright © The Author(s), 2023. Published by Cambridge University Press

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