Partially ionized hydrogen plasma in strong magnetic fields

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dc.creatorPotekhin, A. Y.
dc.creatorChabrier, G.
dc.creatorShibanov, Yu. A.
dc.date1999-07-01
dc.date2002-04-21
dc.date.accessioned2026-07-07T06:33:07Z
dc.date.available2026-07-07T06:33:07Z
dc.descriptionWe study the thermodynamic properties of a partially ionized hydrogen plasma in strong magnetic fields, B ~ 10^{12}-10^{13} G, typical of neutron stars. The properties of the plasma depend significantly on the quantum-mechanical sizes and binding energies of the atoms, which are strongly modified by thermal motion across the field. We use new fitting formulas for the atomic binding energies and sizes, based on accurate numerical calculations and valid for any state of motion of the atom. In particular, we take into account decentered atomic states, neglected in previous studies of thermodynamics of magnetized plasmas. We also employ analytic fits for the thermodynamic functions of nonideal fully ionized electron-ion Coulomb plasmas. This enables us to construct an analytic model of the free energy. An ionization equilibrium equation is derived, taking into account the strong magnetic field effects and the nonideality effects. This equation is solved by an iteration technique. Ionization degrees, occupancies, and the equation of state are calculated.
dc.description17 pages, 11 figures (embedded using epsf.sty), REVTeX3. V2: two curves on the right panel of Fig. 8 are corrected. V3: a misprint (missed brackets) in Eq. (55) is corrected
dc.identifierhttps://arxiv.org/abs/astro-ph/9907006
dc.identifierhttp://arxiv.org/abs/astro-ph/9907006
dc.identifierPhys.Rev. E60 (1999) 2193
dc.identifierdoi:10.1103/PhysRevE.60.2193
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/99090
dc.subjectAstrophysics
dc.subjectPlasma Physics
dc.titlePartially ionized hydrogen plasma in strong magnetic fields
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