Previous correlations of spontaneous fission half-lives vs Z²A predict that the half-lives of even-even isotopes increase with A. A deviation from the above correlation is discussed, and it is shown that the spontaneous fission half-lives of the even-even isotopes go through a maximum with increasing A. The shorter spontaneous fission half-lives beyond the maximum may be a result of the greater deformations of the larger-A nuclides. Some comments are made on fission thresholds.
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J. R. Huizenga (1954) studied this question.
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