Tilted-axis-cranking covariant density functional theory for the high-spin spectroscopy in $^{69}$Ga
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arXiv
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| Autori principali: | , , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| _version_ | 1866917070050951168 |
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| author | Wang, Y. P. Wang, Y. K. Zhao, P. W. |
| author_facet | Wang, Y. P. Wang, Y. K. Zhao, P. W. |
| contents | The tilted-axis-cranking covariant density functional theory is applied to investigate the three newly-observed positive-parity bands SI, SII, and SIII in $^{69}$Ga. The energy spectra and angular momenta are calculated and compared with the experimental data. For the yrast band SI, pairing correlations play a crucial role for the states with spin $I\leq 23/2\hbar$. The bands SII and SIII are suggested to be signature partner bands with positive and negative signatures, respectively. The transition probabilities $B(E2)$ for these bands are predicted, and await further experimental verification. By analyzing the angular momentum alignments microscopicly, it is revealed that the $g_{9/2}$ protons and neutrons play an important role in the description of the collective structure of $^{69}$Ga. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2505_02067 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Tilted-axis-cranking covariant density functional theory for the high-spin spectroscopy in $^{69}$Ga Wang, Y. P. Wang, Y. K. Zhao, P. W. Nuclear Theory Nuclear Experiment The tilted-axis-cranking covariant density functional theory is applied to investigate the three newly-observed positive-parity bands SI, SII, and SIII in $^{69}$Ga. The energy spectra and angular momenta are calculated and compared with the experimental data. For the yrast band SI, pairing correlations play a crucial role for the states with spin $I\leq 23/2\hbar$. The bands SII and SIII are suggested to be signature partner bands with positive and negative signatures, respectively. The transition probabilities $B(E2)$ for these bands are predicted, and await further experimental verification. By analyzing the angular momentum alignments microscopicly, it is revealed that the $g_{9/2}$ protons and neutrons play an important role in the description of the collective structure of $^{69}$Ga. |
| title | Tilted-axis-cranking covariant density functional theory for the high-spin spectroscopy in $^{69}$Ga |
| topic | Nuclear Theory Nuclear Experiment |
| url | https://arxiv.org/abs/2505.02067 |