Determination of the spins and parities for the 0$_{4}^{+}$ and 0$_{5}^{+}$ states in $^{100}$Zr
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| Main Authors: | , , , , , , , , , , , , , , |
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| Format: | Preprint |
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2024
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| _version_ | 1866913234267668480 |
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| author | Wu, J. Carpenter, M. P. Kondev, F. G. Janssens, R. V. F. Zhu, S. McCutchan, E. A. Ayangeakaa, A. D. Chen, J. Clark, J. Hartley, D. J. Lauritsen, T. Pietralla, N. Savard, G. Seweryniak, D. Werner, V. |
| author_facet | Wu, J. Carpenter, M. P. Kondev, F. G. Janssens, R. V. F. Zhu, S. McCutchan, E. A. Ayangeakaa, A. D. Chen, J. Clark, J. Hartley, D. J. Lauritsen, T. Pietralla, N. Savard, G. Seweryniak, D. Werner, V. |
| contents | Two 0$^{+}$ states at 1294.5 and 1774.0 keV, together with three 2$^{+}$ and one 4$^{+}$ levels, were identified or unambiguously spin-parity assigned for the first time in $^{100}$Zr utilizing $γ$-ray spectroscopy and $γ$-$γ$ angular correlation techniques with the Gammasphere spectrometer, following the $β^{-}$ decay of neutron-rich, mass separated $^{100,100m}$Y isotopes. Comparisons with recent Monte Carlo Shell-Model (MCSM) calculations indicate that these two states are candidates for the bandhead of a sequence in a shape-coexisting spherical minimum predicted to be located around $\approx$1500 keV. According to the measured relative B(E2)$_{relative}$ transition probabilities, the 0$_{5}^{+}$ state exhibits decay properties which more closely align with those predicted for a spherical shape, while the 0$_{4}^{+}$ level is suggested to be associated with a weakly-deformed shape similar to one related to the 0$_{2}^{+}$ state. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2402_02640 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Determination of the spins and parities for the 0$_{4}^{+}$ and 0$_{5}^{+}$ states in $^{100}$Zr Wu, J. Carpenter, M. P. Kondev, F. G. Janssens, R. V. F. Zhu, S. McCutchan, E. A. Ayangeakaa, A. D. Chen, J. Clark, J. Hartley, D. J. Lauritsen, T. Pietralla, N. Savard, G. Seweryniak, D. Werner, V. Nuclear Experiment Two 0$^{+}$ states at 1294.5 and 1774.0 keV, together with three 2$^{+}$ and one 4$^{+}$ levels, were identified or unambiguously spin-parity assigned for the first time in $^{100}$Zr utilizing $γ$-ray spectroscopy and $γ$-$γ$ angular correlation techniques with the Gammasphere spectrometer, following the $β^{-}$ decay of neutron-rich, mass separated $^{100,100m}$Y isotopes. Comparisons with recent Monte Carlo Shell-Model (MCSM) calculations indicate that these two states are candidates for the bandhead of a sequence in a shape-coexisting spherical minimum predicted to be located around $\approx$1500 keV. According to the measured relative B(E2)$_{relative}$ transition probabilities, the 0$_{5}^{+}$ state exhibits decay properties which more closely align with those predicted for a spherical shape, while the 0$_{4}^{+}$ level is suggested to be associated with a weakly-deformed shape similar to one related to the 0$_{2}^{+}$ state. |
| title | Determination of the spins and parities for the 0$_{4}^{+}$ and 0$_{5}^{+}$ states in $^{100}$Zr |
| topic | Nuclear Experiment |
| url | https://arxiv.org/abs/2402.02640 |