تقرير
Towards the Limits of Existence of Nuclear Structure: Observation and First spectroscopy of the Isotope $^{31}$K by measuring its three-proton Decay
| العنوان: | Towards the Limits of Existence of Nuclear Structure: Observation and First spectroscopy of the Isotope $^{31}$K by measuring its three-proton Decay |
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| المؤلفون: | Kostyleva, D., Mukha, I., Acosta, L., Casarejos, E., Chudoba, V., Ciemny, A. A., Dominik, W., Dueñas, J. A., Dunin, V., Espino, J. M., Estradé, A., Farinon, F., Fomichev, A., Geissel, H., Gorshkov, A., Grigorenko, L. V., Janas, Z., Kamiński, G., Kiselev, O., Knöbel, R., Krupko, S., Kuich, M., Litvinov, Yu. A., Marquinez-Durán, G., Martel, I., Mazzocchi, C., Nociforo, C., Ordúz, A. K., Pfützner, M., Pietri, S., Pomorski, M., Prochazka, A., Rymzhanova, S., Sánchez-Benítez, A. M., Scheidenberger, C., Simon, H., Sitar, B., Stanoiu, M., Strmen, P., Szarka, I., Takechi, M., Tanaka, Y. K., Weick, H., Winkler, M., Winfield, J. S., Xu, X., Zhukov, M. V. |
| المصدر: | Phys. Rev. Lett. 123, 092502 (2019) |
| سنة النشر: | 2019 |
| المجموعة: | Nuclear Experiment |
| مصطلحات موضوعية: | Nuclear Experiment |
| الوصف: | The most-remote from stability isotope $^{31}$K, which is located four atomic mass units beyond the proton drip line, has been observed. It is unbound in respect to three-proton (${3p}$) emission, and its decays have been detected in flight by measuring trajectories of all decay products using micro-strip detectors. The $3p$-emission processes have been studied by means of angular correlations $^{28}$S+3$p$ and the respective decay vertexes. The energies of the previously-unknown ground and excited states of $^{31}$K have been determined. This provides its $3p$ separation-energy value $S_{3p}$ of $-4.6(2)$ MeV. Upper half-life limits of 10 ps of the observed $^{31}$K states have been derived from distributions of the measured decay vertexes. Comment: 6 pages, 5 figures |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevLett.123.092502 |
| URL الوصول: | http://arxiv.org/abs/1905.08154 |
| رقم الأكسشن: | edsarx.1905.08154 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1103/PhysRevLett.123.092502 |
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