First Measurement of Collectivity of Coexisting Shapes based on Type II Shell Evolution: The Case of $^{96}$ Zr

preprint2016arXivOpen access

C. Kremer S. Aslanidou S. Bassauer M. Hilcker A. Krugmann P. von Neumann-Cosel T. Otsuka N. Pietralla V. Yu. Ponomarev N. Shimizu M. Singer G. Steinhilber T. Togashi Y. Tsunoda V. Werner M. Zweidinger

nucl-ex nucl-th

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Background: Type II shell evolution has recently been identified as a microscopic cause for nuclear shape coexistence. Purpose: Establish a low-lying rotational band in 96-Zr. Methods: High-resolution inelastic electron scattering and a relative analysis of transition strengths are used. Results: The B(E2; 0_1^+ -> 2_2^+) value is measured and electromagnetic decay strengths of the secdond 2^+ state are deduced. Conclusions: Shape coexistence is established for 96-Zr. Type II shell evolution provides a systematic and quantitative mechanism to understand deformation at low excitation energies.

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First Measurement of Collectivity of Coexisting Shapes based on Type II Shell Evolution: The Case of $^{96}$ Zr

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First Measurement of Collectivity of Coexisting Shapes based on Type II Shell Evolution: The Case of 96^{96}96Zr

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First Measurement of Collectivity of Coexisting Shapes based on Type II Shell Evolution: The Case of $^{96}$ Zr