تقرير
Neutron single-particle strength in silicon isotopes: Constraining the driving forces of shell evolution
| العنوان: | Neutron single-particle strength in silicon isotopes: Constraining the driving forces of shell evolution |
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| المؤلفون: | Stroberg, S. R., Gade, A., Tostevin, J. A., Bader, V. M., Baugher, T., Bazin, D., Berryman, J. S., Brown, B. A., Campbell, C. M., Kemper, K. W., Langer, C., Lunderberg, E., Lemasson, A., Noji, S., Otsuka, T., Recchia, F., Walz, C., Weisshaar, D., Williams, S. |
| سنة النشر: | 2015 |
| المجموعة: | Nuclear Experiment Nuclear Theory |
| مصطلحات موضوعية: | Nuclear Experiment, Nuclear Theory |
| الوصف: | Shell evolution is studied in the neutron-rich silicon isotopes 36,38,40 Si using neutron single-particle strengths deduced from one-neutron knockout reactions. Configurations involving neutron excita- tions across the N = 20 and N = 28 shell gaps are quantified experimentally in these rare isotopes. Comparisons with shell model calculations show that the tensor force, understood to drive the col- lective behavior in 42 Si with N = 28, is already important in determining the structure of 40 Si with N = 26. New data relating to cross-shell excitations provide the first quantitative support for repulsive contributions to the cross-shell T = 1 interaction arising from three-nucleon forces. |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevC.91.041302 |
| URL الوصول: | http://arxiv.org/abs/1504.02329 |
| رقم الأكسشن: | edsarx.1504.02329 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1103/PhysRevC.91.041302 |
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