Occurrence of alternating parity levels in bands of the odd-Z219Ac nucleus期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

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Occurrence of alternating parity levels in bands of the odd-Z219Ac nucleus

Authors:	S Khazrouni A Chevallier J Chevallier O Helene G Ramanantsizehena N Schulz

Institution:	1. Institut für Kernphysik der Technischen Hochschule Darmstadt, Schlossgartenstrasse 9, D-6100, Darmstadt, Federal Republic of Germany 2. Physikalisches Institut der Universit?t Heidelberg, D-6900, Heidelberg, Federal Republic of Germany 3. Max-Planck-Institut für Kernphysik, D-6900, Heidelberg, Federal Republic of Germany 4. Gesellschaft für Schwerionenforschung, D-6100, Darmstadt, Federal Republic of Germany 5. Institut für Physik der Universit?t Mainz, Postfach 3980, D-6500, Mainz, Federal Republic of Germany

Abstract:	A positive and a negative parity band in²²¹Th have been investigated via the²⁰⁸Pb(¹⁶O, 3n)²²¹Th reaction. Strong E1 transitions compete with stretched E2 transitions deexciting levels of alternating parity. The measured averaged =2.6 · 10^?6 fm^?2 is similar to that observed in neighbouring nuclei. The level scheme may be interpreted assuming an octupole deformed core.

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