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Alpha decay chains from superheavy nuclei

✍ Scribed by C. Samanta

Publisher: Elsevier Science
Year: 2009
Tongue: English
Weight: 641 KB
Volume: 62
Category: Article
ISSN: 0146-6410
DOI: 10.1016/j.ppnp.2008.12.013

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✦ Synopsis

Whether these fission-survived superheavy nuclei with high Z and N would live long enough for detection or, undergo α-decay in a very short time, remains an open question. α-decay half lives of nuclei with 130 ≥ Z ≥ 100 have been calculated in a WKB framework using density-dependent M3Y interaction with Q-values from different mass formulae. The results are in excellent agreement with the experimental data. Fission survived Sg nuclei with Z = 106, N = 162 is predicted to have the highest α-decay half life (∼3.2 h) in the Z = 106-108, N = 160-164 region called small island/peninsula. Superheavy nuclei with Z > 118 are found to have α-decay half lives of the order of microseconds or less.

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