Electrical conductivity of plasmas of DB white dwarf atmospheres

Details Electrical conductivity of plasmas of DB white dwarf atmospheres Electrical conductivity of plasmas of DB white dwarf atmospheres

Jul 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010mnras.406..590s&link_type=abstract

Monthly Notices of the Royal Astronomical Society, Volume 406, Issue 1, pp. 590-596.

Astronomy and Astrophysics

Astronomy

1

Stars: Atmospheres, Stars: Kinematics And Dynamics, White Dwarfs

Scientific paper

The static electrical conductivity of non-ideal, dense, partially ionized helium plasma was calculated over a wide range of plasma parameters: temperatures 1 × 104 <~ T <~ 1 × 105K and mass density 1 × 10-6gcm-3 <~ ρ <~ 2gcm-3. Calculations of electrical conductivity of plasma for the considered range of plasma parameters are of interest for DB white dwarf atmospheres with effective temperatures 1 × 104K <~ Teff <~ 3 × 104K.
Electrical conductivity of plasma was calculated by using the modified random phase approximation and semiclassical method, adapted for the case of dense, partially ionized plasma. The results were compared with the unique existing experimental data, including the results related to the region of dense plasmas. In spite of low accuracy of the experimental data, the existing agreement with them indicates that results obtained in this paper are correct.

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