Abstract
Both refractory and siderophile elements are relatively overabundant in the chemical composition of the cosmic ray source matter as compared to that of the solar atmosphere. Since the condensation temperature for each of these elements is usually higher than 800K, the mechanism for the cosmic ray source matter to be formed seems to be causally connected to the condensation process of those elements in the circumstellar gases or in the matter ejected from supernova explosions. In fact, it has been known that those elements are efficiently condensed into chondritic matter which is found in the circumstellar gases.
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Sakurai, K. (1991). The Source Composition of Galactic Cosmic Rays and the Condensation Process of the Elements in Circumstellar and Interstellar Gases. In: Shapiro, M.M., Silberberg, R., Wefel, J.P. (eds) Cosmic Rays, Supernovae and the Interstellar Medium. NATO ASI Series, vol 337. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-3158-2_10
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DOI: https://doi.org/10.1007/978-94-011-3158-2_10
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