The Hall Effect in Dense Noble Gas Plasmas

The nonmetal-to-metal transition in dense fluid helium is discussed, which has been, in analogy to metallization of hydrogen, predicted as first-order plasma phase transition using chemical models for the equation of state and plasma composition. However, recent ab initio simulations performed for dense fluid helium indicate that this transition is continuous in the considered regime, without a density jump and latent heat as characteristic of a first-order phase transition. Implications for some astrophysical plasmas are discussed.

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“…The observed behaviour coincides with that of expanded fluid metals [ 71,72 ] and noble gases. [ 73,74 ]…”

Section: Ab Initio Methodsmentioning

confidence: 99%

Nonmetal‐to‐metal transition in dense fluid helium

Preising

Redmer

2021

Contributions to Plasma Physics

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Coulomb contribution to the direct current electrical conductivity of dense partially ionized plasmas

et al. 2007

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The Coulomb contribution to the electrical conductivity of partially ionized plasmas is discussed and its general behavior is investigated. Recent experiments on the direct current conductivity in shock wave induced argon and xenon plasmas are analyzed in this context. Within the relaxation time approach, the Coulomb contribution is extracted by eliminating the contribution of scattering from neutrals. Alternatively, the Coulomb contribution can be calculated directly within linear-response theory. In particular, from the latter approach a generalized Spitzer factor is derived for taking into account electron-electron interactions within the relaxation time approximation. Experimental results for the Coulomb contribution to the electrical conductivity are in reasonable agreement with an interpolation formula derived from linear-response theory.

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Average-atom approach for transport properties of shocked argon in the presence of a magnetic field

Wetta,

Pain

2024

Phys. Rev. E

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The Hall Effect in Dense Noble Gas Plasmas

Cited by 5 publications

References 19 publications

Nonmetal‐to‐metal transition in dense fluid helium

Nonmetal‐to‐metal transition in dense fluid helium

Coulomb contribution to the direct current electrical conductivity of dense partially ionized plasmas

Average-atom approach for transport properties of shocked argon in the presence of a magnetic field

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