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| Título: | Are there signatures of harmonic oscillator shells far from stability? First spectroscopy of Zr 110 |
Autor: | Paul, N.; Corsi, A.; Obertelli, A.; Doornenbal, P.; Authelet, G.; Baba, H.; Jungclaus, Andrea CSIC ORCID; Lee, J.; Vaquero, Victor CSIC ORCID | Fecha de publicación: | 18-ene-2017 | Editor: | American Physical Society | Citación: | Physical Review Letters 118: 032501 (2017) | Resumen: | The first measurement of the low-lying states of the neutron-rich Zr110 and Mo112 was performed via in-beam γ-ray spectroscopy after one proton removal on hydrogen at ∼200 MeV/nucleon. The 21+ excitation energies were found at 185(11) keV in Zr110, and 235(7) keV in Mo112, while the R42=E(41+)/E(21+) ratios are 3.1(2), close to the rigid rotor value, and 2.7(1), respectively. These results are compared to modern energy density functional based configuration mixing models using Gogny and Skyrme effective interactions. We conclude that first levels of Zr110 exhibit a rotational behavior, in agreement with previous observations of lighter zirconium isotopes as well as with the most advanced Monte Carlo shell model predictions. The data, therefore, do not support a harmonic oscillator shell stabilization scenario at Z=40 and N=70. The present data also invalidate predictions for a tetrahedral ground state symmetry in Zr110. | Descripción: | N. Paul et al. -- 7 pags., 4 figs. | Versión del editor: | https://doi.org/10.1103/PhysRevLett.118.032501 | URI: | http://hdl.handle.net/10261/160304 | DOI: | 10.1103/PhysRevLett.118.032501 | Identificadores: | doi: 10.1103/PhysRevLett.118.032501 issn: 1079-7114 |
| Aparece en las colecciones: | (CFMAC-IEM) Artículos |
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| Are There Signatures.pdf | 337,15 kB | Adobe PDF |  Visualizar/Abrir |
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