First Measurement of Collectivity of Coexisting Shapes based on Type II Shell Evolution: The Case of $^{96}$Zr
| Autor: | Kremer, C., Aslanidou, S., Bassauer, S., Hilcker, M., Krugmann, A., von Neumann-Cosel, P., Otsuka, T., Pietralla, N., Ponomarev, V. Yu., Shimizu, N., Singer, M., Steinhilber, G., Togashi, T., Tsunoda, Y., Werner, V., Zweidinger, M. |
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| Rok vydání: | 2016 |
| Předmět: | |
| Zdroj: | Phys. Rev. Lett. 117, 172503 (2016) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1103/PhysRevLett.117.172503 |
| Popis: | 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. Comment: 5 pages, 4 figures |
| Databáze: | arXiv |
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