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Spontaneous fission and alpha decay are the main decay modes for superheavynuclei. The superheavy nuclei which have small alpha decay half-life comparedto spontaneous fission half-life will survive fission and can be detected inthe laboratory through alpha decay. We have studied the alpha decay half-lifeand spontaneous half-life of some superheavy elements in the atomic range Z =100-130. Spontaneous fission half-lives of superheavy nuclei have beencalculated using the phenomenological formula and the alpha decay half-livesusing Viola-Seaborg-Sobiczewski formula (Sobiczewski et al. 1989), semiempirical relation of Brown (1992) and formula based on generalized liquid dropmodel proposed by Dasgupta-Schubert and Reyes (2007). The results are reportedhere.

Alpha decay favoured isotopes of some superheavy nuclei: Spontaneous fission versus alpha decay