تقرير
Direct mass measurements of 19B, 22C, 29F, 31Ne, 34Na and other light exotic nuclei
| العنوان: | Direct mass measurements of 19B, 22C, 29F, 31Ne, 34Na and other light exotic nuclei |
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| المؤلفون: | Gaudefroy, L., Mittig, W., Orr, N., Varet, S., Chartier, M., Roussel-Chomaz, P., Ebran, J. P., Fernández-Domínguez, B., Frémont, G., Gangnant, P., Gillibert, A., Grévy, S., Libin, J. F., Maslov, V. A., Paschalis, S., Pietras, B., Penionzhkevich, Yu. -E., Spitaels, C., Villari, A. C. C. |
| المصدر: | Phys. Rev. Lett. 109, 202503 (2012) |
| سنة النشر: | 2012 |
| المجموعة: | Nuclear Experiment |
| مصطلحات موضوعية: | Nuclear Experiment |
| الوصف: | We report on direct time-of-flight based mass measurements of 16 light neutron-rich nuclei. These include the first determination of the masses of the Borromean drip-line nuclei $^{19}$B, $^{22}$C and $^{29}$F as well as that of $^{34}$Na. In addition, the most precise determinations to date for $^{23}$N and $^{31}$Ne are reported. Coupled with recent interaction cross-section measurements, the present results support the occurrence of a two-neutron halo in $^{22}$C, with a dominant $\nu2s_{1/2}^2$ configuration, and a single-neutron halo in $^{31}$Ne with the valence neutron occupying predominantly the 2$p_{3/2}$ orbital. Despite a very low two-neutron separation energy the development of a halo in $^{19}$B is hindered by the 1$d_{5/2}^2$ character of the valence neutrons. Comment: 5 pages |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevLett.109.202503 |
| URL الوصول: | http://arxiv.org/abs/1211.3235 |
| رقم الأكسشن: | edsarx.1211.3235 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1103/PhysRevLett.109.202503 |
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