Abstract
IT has been suggested1,2 that the temperatures of some interstellar grains may be low enough for the condensation of solid hydrogen on their surfaces. The questions of grain temperature and vapour pressure of solid hydrogen are re-examined here, and it seems highly unlikely that a significant amount of solid hydrogen can exist in interstellar space.
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References
Wickramasinghe, N. C., and Reddish, V. C., Nature, 218, 661 (1968).
Hoyle, F., Wickramasinghe, N. C., and Reddish, V. C., Nature, 218, 1124 (1968).
Van de Hulst, H. C., Rech. Astr. Obs. d'Utrecht, 11, part 2 (1949).
Barber, C. R., and Horsford, A., Brit. J. Appl. Phys., 14, 920 (1963).
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GREENBERG, J., DE JONG, T. Can Solid Hydrogen condense on Interstellar Grains?. Nature 224, 251–252 (1969). https://doi.org/10.1038/224251a0
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DOI: https://doi.org/10.1038/224251a0
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