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arXiv 1607.04541astro-ph.HEnucl-th
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磁场中稠密等离子体的电导率张量

Electrical conductivity tensor of dense plasma in magnetic fields

Arus Harutyunyan, Armen Sedrakian

摘要:

研究了中子星壳中有限温度等离子体的电导率,以应用于致密星的磁流体动力学描述。在弛豫时间近似下求解Boltzmann动力学方程,考虑了磁场引起的输运各向异性、散射矩阵元中的动力学屏蔽效应以及原子核之间的相关性。我们发现,电导率有一个最小值在非零温度,低温降低和幂律增加随着温度的升高。选定的数值结果显示的物质组成的碳,铁,和更重的核存在于外壳的中子星。

英文摘要:

Electrical conductivity of finite-temperature plasma in neutron star crusts is studied for applications in magneto-hydrodynamical description of compact stars. We solve the Boltzmann kinetic equation in relaxation time approximation taking into account the anisotropy of transport due to the magnetic field, the effects of dynamical screening in the scattering matrix element and corre- lations among the nuclei. We show that conductivity has a minimum at a non-zero temperature, a low-temperature decrease and a power-law increase with increasing temperature. Selected numerical results are shown for matter composed of carbon, iron, and heavier nuclei present in the outer crusts of neutron star.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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