The mean square spin value of the compound nucleus ²⁴⁸Cf has been determined from fissionfragment angular distributions for the ¹²C + ²³⁶U and ¹⁶O + ²³²Th reactions. The anisotropy and, hence, the mean square spin values are much larger than expected. Models which reproduce the enhancement observed in the sub-barrier fusion excitation functions fail to account for the spin-distribution observations.
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Vandenbosch et al. (1986) studied this question.
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