Alpha decay chains from superheavy nuclei |
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Authors: | C Samanta |
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Institution: | Physics Department, University of Richmond, Richmond, VA 23173, USA Saha Institute of Nuclear Physics, 1/AF, Bidhannagar, Kolkata-700064, India Physics Department, Virginia Commonwealth University, Richmond, VA 23284-2000, USA |
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Abstract: | Magic islands for extra-stable nuclei in the midst of the sea of fission-instability were predicted to be around Z=114, 124 or, 126 with N=184, and Z=120, with N=172. 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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Keywords: | SHE _method=retrieve& _eid=1-s2 0-S0146641008001075& _mathId=si63 gif& _pii=S0146641008001075& _issn=01466410& _acct=C000053510& _version=1& _userid=1524097& md5=a5d095a67bbecd0d4d1dd9f4be62b048')" style="cursor:pointer α-decay" target="_blank">" alt="Click to view the MathML source" title="Click to view the MathML source">α-decay Half life Fission WKB DDM3Y |
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