Abstract
The basis of conductivity calculations in the presence of magnetic fields is reviewed, covering for a solar-type plasma the full temperature range between complete ionization of hydrogen and H2-molecule formation. It is shown that both the general conductivity theory and our knowledge of momentum transfer cross-sections are now developed to the point where the resulting coefficients should be accurate to about 50% and better. This removes an often cited difficulty in model calculations for sunspots. For one specific case, a comparison is carried out with previous less accurate determinations of the conductivity.
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References
Aller, L.H.: 1963, Astrophysics: The Atmospheres of the Sun and Stars. 2nd ed., The Ronald Press Co., New York.
Allis, W.P.: 1956, in Handbuch der Physik 21. (ed. by S. Flügge), Springer-Verlag, Heidelberg, p. 383.
Altschuler, M.D.: 1967, Solar Phys. 1, 377.
Altschuler, M.D., Nakagawa, Y., and Lilliequist, C.G.: 1968, Solar Phys. 3, 466.
Bachynski, M.P., Shkarofsky, I.P., and Johnston, T.W.: 1966, Plasmas and the Electromagnetic Field. McGraw-Hill Publ. Co., New York.
Braun, E.: 1967, Phys. Fluids 10, 731; 737.
Dalgarno, A. and Lane, N.F.: 1966, Astrophys. J. 145, 623.
Finkelnburg, W. and Maecker, H.: 1956, in Handbuch der Physik 22. (ed. by S. Flügge), Springer-Verlag, Heidelberg, p. 254.
Frost, L.A. and Phelps, A.V.: 1962, Phys. Rev. 127, 1621.
Geltman, S.: 1965, Astrophys. J. 141, 376.
Golden, D.E. and Bandel, H.W.: 1965, Phys. Rev. 138A, 14.
Heald, M.A. and Wharton, C.B.: 1965, Plasma Diagnostics with Microwaves. John Wiley and Sons, New York.
Kleinpoppen, H.: 1968, Ergebnisse der exakten Naturwissenschaften. Springer-Verlag, Heidelberg (in press).
Kopecký, M.: 1957, Bull. Astron. Inst. Czech. 8, 71.
Kopecký, M. and Kuklin, G.V.: 1966, Bull. Astron. Inst. Czech. 17, 45.
Kuklin, G.V.: 1967 (in press).
Massey, H.S.W. and Moiseiwitsch, B.L.: 1951, Proc. Roy. Soc. London A205, 483.
Nagasawa, S.: 1955, Publ. Astron. Soc. Japan 7, 9.
Oster, L.: 1957, Z. Astrophysik 42, 228.
Osterbrock, D.E.: 1952, Phys. Rev. 87, 468.
Parcell, L. A. and May, R.M.: 1967, Proc. Phys. Soc. London 91, 54.
Pottasch, S.R.: 1964, Space Sci. Rev. 3, 816.
Rand, S. and Levinsky, E.S.: 1966, Phys. Fluids 9, 1991.
Robinson, E.J. and Geltman, S.: 1967, Phys. Rev. 153, 4.
Sanmartin, J.R.: 1967, Thesis, University of Colorado (unpublished).
Schlüter, A.: 1950, 1951, Z. Naturforschung 5a, 72; 6a, 73.
Schröter, E. H.: 1966, Atti del Convegno sulle Macchie Solari. G. Barbera, Florence, p. 222.
Schwartz, C.: 1961, Phys. Rev. 124, 1468.
Shkarofsky, I.P.: 1960, Canad. J. Phys. 39, 1619.
Silin, V.P. and Shister, A.R.: 1966, Sov. Phys. JETP 22, 139.
Spitzer, L. and Härm, R.: 1953, Phys. Rev. 89, 977.
Stepanov, V.E. and Petrova, N.N.: 1959, Izv. Krymsk. Astrofiz. Observ. 21, 152.
Van 'tVeer, F.: 1963, Ann. Astrophys. 26, 185.
Vassil'eva, G.Y.: 1962, Izv. Glavn. Astr. Obs. (Pulkova) 22, 18.
Wilson, P.: 1968, Solar Phys. 3, 243.
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Visiting Fellow for the year 1966–67.
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Oster, L. The electrical conductivity in sunspot regions. Sol Phys 3, 543–556 (1968). https://doi.org/10.1007/BF00151936
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DOI: https://doi.org/10.1007/BF00151936