Isospin effect on spontaneous fission half-lives of even-even nuclei

摘要

By using a new five-parameter formula derived from the WKB approximation,we systematically calculate the spontaneous fission half-fives of even-even nuclei with Z=90-108.The isospin effect is taken into account in the new formula.The calculated half-lives agree well with the experimental data.In addition,we predict the spontaneous fission half-lives of superheavy nuclei with Z=108-114.Our predictions may provide references for future experiments.