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Hybrid Vlasov simulations for alpha particles heating in the solar wind

Published online by Cambridge University Press:  08 June 2011

Denise Perrone ,
Francesco Valentini  and
Pierluigi Veltri
Denise Perrone
Affiliation:
Università della Calabria, Dipartimento di Fisica and CNISM, Unità di Cosenza, I-87030 Arcavacata di Rende, Italy email: [email protected]; [email protected]
Francesco Valentini
Affiliation:
Università della Calabria, Dipartimento di Fisica and CNISM, Unità di Cosenza, I-87030 Arcavacata di Rende, Italy email: [email protected]; [email protected] Università di Pisa, Dipartimento di Fisica and CNISM, 56127 Pisa, Italy email: [email protected]
Pierluigi Veltri
Affiliation:
Università della Calabria, Dipartimento di Fisica and CNISM, Unità di Cosenza, I-87030 Arcavacata di Rende, Italy email: [email protected]; [email protected]
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Abstract

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Heating and acceleration of heavy ions in the solar wind and corona represent a long-standing theoretical problem in space physics and are distinct experimental signatures of kinetic processes occurring in collisionless plasmas. To address this problem, we propose the use of a low-noise hybrid-Vlasov code in four dimensional phase space (1D in physical space and 3D in velocity space) configuration. We trigger a turbulent cascade injecting the energy at large wavelengths and analyze the role of kinetic effects along the development of the energy spectra. Following the evolution of both proton and α distribution functions shows that both the ion species significantly depart from the maxwellian equilibrium, with the appearance of beams of accelerated particles in the direction parallel to the background magnetic field.

Keywords

plasmasturbulencewaves
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 6 , Symposium S274: Advances in Plasma Astrophysics , September 2010 , pp. 168 - 171
Copyright
Copyright © International Astronomical Union 2011

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