تقرير
Novel shape evolution in Sn isotopes from magic numbers 50 to 82
| العنوان: | Novel shape evolution in Sn isotopes from magic numbers 50 to 82 |
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| المؤلفون: | Togashi, Tomoaki, Tsunoda, Yusuke, Otsuka, Takaharu, Shimizu, Noritaka, Honma, Michio |
| المصدر: | Phys. Rev. Lett. 121, 062501 (2018) |
| سنة النشر: | 2018 |
| المجموعة: | Nuclear Theory |
| مصطلحات موضوعية: | Nuclear Theory |
| الوصف: | A novel shape evolution in the Sn isotopes by the state-of-the-art application of the Monte Carlo Shell Model calculations is presented in a unified way for the 100-138Sn isotopes. A large model space consisting of eight single-particle orbits for protons and neutrons is taken with the fixed Hamiltonian and effective charges, where protons in the 1g9/2 orbital are fully activated. While the significant increase of the B(E2; 0+1 -> 2+1) value, seen around 110Sn as a function of neutron number (N), has remained a major puzzle over decades, it is explained as a consequence of the shape evolution driven by proton excitations from the 1g9/2 orbital. A second-order quantum phase transition is found around N=66, connecting the phase of such deformed shapes to the spherical pairing phase. The shape and shell evolutions are thus described, covering topics from the Gamow-Teller decay of 100Sn to the enhanced double magicity of 132Sn. Comment: 4 figures |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevLett.121.062501 |
| URL الوصول: | http://arxiv.org/abs/1806.10432 |
| رقم الأكسشن: | edsarx.1806.10432 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1103/PhysRevLett.121.062501 |
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