New yrast excited states of the N = 84 nucleus 142Ce observed in deep inelastic reactions |
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| Authors: | Z Liu YH Zhang XH Zhou ML Liu WJ Luo QY Pan ZG Gan T Hayakawa M Oshima Y Toh T Shizima Y Hatsukawa A Osa T Ishii M Sugawara |
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| Institution: | (1) Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, 730000, PRC, CN;(2) Japan Atomic Energy Research Institute, Tokai, Ibaraki 319-1195, Japan, JP;(3) Chiba Institute of Technology, Narashino, Chiba 275-0023, Japan, JP |
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| Abstract: | Excited states of 142Ce, populated in deep inelastic reactions of 82Se projectiles bombarding 139La target, have been studied up to medium spins using in-beam γ spectroscopy techniques. Three new levels have been identified
at 2625, 2995, 3834 keV, and assigned as 8+, 9(-) and 11(-), respectively. These new yrast states follow closely the level systematics of the even mass N = 84 isotones. Their strctures have been discussed with the help of empirical shell model calculations.
Received: 2 November 2001 / Accepted: 15 January 2002 |
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| Keywords: | PACS 21 60 Cs Shell model – 23 20 Lv Gamma transitions and level energies – 27 60 +j 90 ?A? 149 |
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