¦Ã-ray spectroscopy of excited states in p>61p>₃₀Zn₃₁

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• 作者：L-L. Andersson ; D. Rudolph ; J. Ekman ; C. Fahlander ; E. K. Johansson ; R. du Rietz ; C. J. Gross ; P. A. Hausladen ; D. C. Radford and G. Hammond
• 关键词：PACS. 21.60.Cs Shell model ; 23.20.En Angular distribution and correlation measurements ; 23.20.Lv γ ; transitions and level energies ; 27.40.+z 39 ⩽ ; A ⩽ ; 58
• 刊名：The European Physical Journal A - Hadrons and Nuclei
• 出版年：2006
• 出版时间：November, 2006
• 年：2006
• 卷：30
• 期：2
• 页码：381-390
• 全文大小：219 KB

文摘

The 61 ₃₀Zn₃₁ isotope has been produced at the Oak Ridge National Laboratory in the fusion-evaporation reaction 40Ca(24Mg, 2pn)61Zn at 104MeV. The experimental set-up allowed γ-rays to be detected in the CLARION Ge detector array in coincidence with the detection of recoiling nuclei in the focal plane at the end of the recoil mass spectrometer. This provides a unique identification of γ-rays belonging to 61Zn. The excited states have been explored by means of recoil- γγ coincidences, and the resulting decay scheme comprises almost 70 transitions. The data reveal numerous non-yrast states and suggest a revised spin and parity assignment for a previously observed superdeformed band. The resulting decay scheme is compared to predictions from different sets of large-scale shell model calculations.