SPONTANEOUS FISSION VERSUS ALPHA-DECAY,
RAND CORP SANTA MONICA CALIF
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A plot of the ratio of spontaneous fission half-lives to alpha disintegration half-lives vs. the fissionability parameter Z squareA indicates that, in the case of even-even nuclei, the spontaneous mode of decay becomes the more predominant as Z squareA increases. The opposite appears to be true for odd-neutron nucleides. The effect of the odd neutron may be such as to favor an anomolously higher frequency for a highly assymetric configuration i.e., a configuration leading to alpha decay.