1. alpha decay of (273)110: Shell closure at N=162
- Author
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Lazarev, YA, Lobanov, YV, Oganessian, YT, Utyonkov, VK, Abdullin, FS, Polyakov, AN, Rigol, J, Shirokovsky, IV, Tsyganov, YS, Iliev, S, Subbotin, VG, Sukhov, AM, Buklanov, GV, Gikal, BN, Kutner, VB, Mezentsev, AN, Subotić, Krunoslav M., Wild, JF, Longheed, RW, Moody, KJ, Lazarev, YA, Lobanov, YV, Oganessian, YT, Utyonkov, VK, Abdullin, FS, Polyakov, AN, Rigol, J, Shirokovsky, IV, Tsyganov, YS, Iliev, S, Subbotin, VG, Sukhov, AM, Buklanov, GV, Gikal, BN, Kutner, VB, Mezentsev, AN, Subotić, Krunoslav M., Wild, JF, Longheed, RW, and Moody, KJ
- Abstract
In bombardments of Pu-244 with S-34 we discovered the alpha-decaying nuclide (273)110. We conducted an extensive off-line search of the raw data for event sequences which fit the expected pattern of implantation in a position-sensitive detector and subsequent decay of (273)110 and its descendants. We observed one three-member sequence of genetically linked alpha decays, resulting in E(alpha)=11.35 MeV, a half-life of 0.3(-0.2)(+1.3) ms, and a production cross section of about 0.4 pb for (273)110. Other possible (273)110 event chains were also observed. The measured a-particle energy for the N=163 nuclide (273)110 provides direct evidence for a neutron shell closure at N=162.
- Published
- 1996