Variations of ฮฑ-particle abundance in th
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G. Moreno; F. Palmiotto
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Article
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1973
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Springer
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English
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The existence of a long-term variation, related to the solar activity, of the average a-particle abundance in the solar wind has been suggested by Robbins et al. (1970) and recently confirmed by Bollea et al. (1972) andOgilvie (1972). Hirshberg et al. (1972b), comparing the distribution of the a-par