EPJ

2024 Impact factor 2.8
EPJ A - Hadrons and Nuclei
Hadrons and Nuclei
Eur. Phys. J. A 6, 141-147

goergen@iskp.uni-bonn.de

Spectroscopy of 200Hg after incomplete fusion reaction

A. Görgen1 - H. Hübel1 - D. Ward2 - S. Chmel1 - R.M. Clark2 - M. Cromaz2 - R.M. Diamond2 - P. Fallon2 - K. Hauschild3 - G.J. Lane2 - I.Y. Lee2 - A.O. Macchiavelli2 - K. Vetter2

1 Institut für Strahlen- und Kernphysik, Universität Bonn, Nussallee 14-16, 53115 Bonn, Germany
2 Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
3Lawrence Livermore National Laboratory, Livermore, CA 94550, USA

Received: 8 June 1999 Communicated by B. Herskind

Abstract
High-spin states in 200Hg have been investigated by in-beam $\gamma$-ray spectroscopy following the reaction 198Pt(9Be,$\alpha$3n). The $\alpha$-emission channel leading to 200Hg is strongly enhanced which may be explained by an incomplete fusion reaction with pre-equilibrium emission of the $\alpha$ particle. The level scheme is extended to higher spins and new band crossings are observed. The band structures are compared to the lighter Hg isotopes with even mass number.

PACS
21.10.-k Properties of nuclei; nuclear energy levels - 23.20.Lv Gamma transitions and level energies - 23.20.En Angular distribution and correlation measurements - 25.70.Jj Fusion and fusion-fission reactions - 27.80.+w $190 \le A \le 219$

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