α decay of 110273: Shell closure at N=162

Yu. A. Lazarev, Yu. V. Lobanov, Yu. Ts. Oganessian, V. K. Utyonkov, F. Sh. Abdullin, A. N. Polyakov, J. Rigol, I. V. Shirokovsky, Yu. S. Tsyganov, S. Iliev, V. G. Subbotin, A. M. Sukhov, G. V. Buklanov, B. N. Gikal, V. B. Kutner, A. N. Mezentsev, K. Subotic, J. F. Wild, R. W. Lougheed, and K. J. Moody
Phys. Rev. C 54, 620 – Published 1 August 1996
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Abstract

In bombardments of Pu244 with S34 we discovered the α-decaying nuclide 110273. 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 110273 and its descendants. We observed one three-member sequence of genetically linked α decays, resulting in Eα=11.35 MeV, a half-life of 0.30.2+1.3 ms, and a production cross section of about 0.4 pb for 110273. Other possible 110273 event chains were also observed. The measured α-particle energy for the N=163 nuclide 110273 provides direct evidence for a neutron shell closure at N=162. © 1996 The American Physical Society.

  • Received 19 January 1996

DOI:https://doi.org/10.1103/PhysRevC.54.620

©1996 American Physical Society

Authors & Affiliations

Yu. A. Lazarev, Yu. V. Lobanov, Yu. Ts. Oganessian, V. K. Utyonkov, F. Sh. Abdullin, A. N. Polyakov, J. Rigol, I. V. Shirokovsky, Yu. S. Tsyganov, S. Iliev, V. G. Subbotin, A. M. Sukhov, G. V. Buklanov, B. N. Gikal, V. B. Kutner, A. N. Mezentsev, and K. Subotic

  • Joint Institute for Nuclear Research, 141980 Dubna, Russian Federation

J. F. Wild, R. W. Lougheed, and K. J. Moody

  • University of California, Lawrence Livermore National Laboratory, Livermore, California 94551

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Vol. 54, Iss. 2 — August 1996

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