New isotope 263Hs

被引：26
作者：
Dragojevic, I. [1 ,2 ]
Gregorich, K. E. [2 ]
Duellmann, Ch. E. [3 ]
Dvorak, J. [2 ]
Ellison, P. A. [1 ,2 ]
Gates, J. M. [1 ,2 ]
Nelson, S. L. [1 ,2 ]
Stavsetra, L. [2 ]
Nitsche, H. [1 ,2 ]
机构：
[1] Univ Calif Berkeley, Coll Chem, Berkeley, CA 94720 USA
[2] Lawrence Berkeley Natl Lab, Div Nucl Sci, Berkeley, CA 94720 USA
[3] Schwerionenforsch GmbH, GSI Helmholtzzentrum, Kernchem, D-64291 Darmstadt, Germany
来源：
PHYSICAL REVIEW C | 2009年 / 79卷 / 01期
关键词：
NUCLEAR PROPERTIES;
D O I：
10.1103/PhysRevC.79.011602
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
A new isotope of Hs was produced in the reaction Pb-208(Fe-56, n)(263)Hs at the 88-Inch Cyclotron of the Lawrence Berkeley National Laboratory. Six genetically correlated nuclear decay chains have been observed and assigned to the new isotope (263)Hs. The measured cross section was 21(-8.4)(+13) pb at 276.4 MeV lab frame center-of-target beam energy. (263)Hs decays with a half-life of 0.74(-0.21)(+0.48) ms by alpha-decay and the measured a- particle energies are 10.57 +/- 0.06, 10.72 +/- 0.06, and 10.89 +/- 0.06 MeV. The experimental cross section is compared to a theoretical prediction based on the Fusion by Diffusion model [W. J. Swiatecki et al., Phys. Rev. C 71, 014602 (2005)].
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页数：4
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