RT Journal Article
T1 Towards the Limits of Existence of Nuclear Structure: Observation and First Spectroscopy of the Isotope 31K by Measuring Its Three-Proton Decay
A1 Kostyleva, D.
A1 Acosta Sánchez, Luis Armando
A1 Dueñas Díaz, José Antonio
A1 Marquínez Durán, Gloria
A1 Martel Bravo, Ismael
A1 Sánchez Benítez, Ángel Miguel
A1 Ordúz, A. K.
A1 Zhukov, M. V.
AB The most remote isotope from the proton dripline (by 4 atomic mass units) has been observed: 31K. It is unbound with respect to three-proton (3 p ) emission, and its decays have been detected in flight by measuring the trajectories of all decay products using microstrip detectors. The 3 p emission processes have been studied by the means of angular correlations of 28S +3 p and the respective decay vertices. The energies of the previously unknown ground and excited states of 31K have been determined. This provides its 3 p separation energy value S3 p of -4.6 (2 ) MeV . Upper half-life limits of 10 ps of the observed 31K states have been derived from distributions of the measured decay vertices.
PB American Physical Society
SN 1079-7114 (electrónico)
SN 0031-9007
YR 2019
FD 2019
LK http://hdl.handle.net/10272/20878
UL http://hdl.handle.net/10272/20878
LA eng
NO 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., … Zhukov, M. V. (2019). Towards the Limits of Existence of Nuclear Structure: Observation and First Spectroscopy of the Isotope 31K by Measuring Its Three-Proton Decay. In Physical Review Letters (Vol. 123, Issue 9). American Physical Society (APS). https://doi.org/10.1103/physrevlett.123.092502
NO This work was supported in part by the HelmholtzInternational Center for FAIR (HIC for FAIR); theHelmholtz Association (Grant No. IK-RU-002); the Russian Science Foundation (Grant No. 17-12-01367); thePolish National Science Center (Contract No. UMO2015/17/B/ST2/00581); the Polish Ministry of Scienceand Higher Education (Grant No. 0079/DIA/2014/43,Grant Diamentowy); the Helmholtz-CAS Joint ResearchGroup (Grant No. HCJRG-108); the Ministry of Education & Science, Spain (Contract No. FPA2016-77689-C2-1-R); the Hessian Ministry for Science and Art(HMWK)through the LOEWE funding scheme; the Ministry of Education, Youth and Sports, Czech Republic (Projects LTT17003 and LM2015049); the JustusLiebig-Universit¨at Giessen (JLU) and the GSI underthe JLU-GSI strategic Helmholtz partnership agreement;DGAPA-PAPIIT UNAM IA103218. This work was carried out in the framework of the Super-FRS ExperimentCollaboration. This article is a part of the Ph.D. thesisof D. Kostyleva.
DS Repositorio Institucional de la Universidad de Huelva
RD 1 jun 2026