Towards the Limits of Existence of Nuclear Structure: Observation and First Spectroscopy of the Isotope 31K by Measuring Its Three-Proton Decay

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 p...

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Detalhes bibliográficos
Autores: Kostyleva, D., Acosta Sánchez, Luis Armando, Dueñas Díaz, José Antonio, Marquínez Durán, Gloria, Martel Bravo, Ismael, Sánchez Benítez, Ángel Miguel, Ordúz, A. K., Zhukov, M. V.
Formato: artículo
Fecha de publicación:2019
País:España
Recursos:Universidad de Huelva (UHU)
Repositorio:Arias Montano. Repositorio Institucional de la Universidad de Huelva
Idioma:inglés
OAI Identifier:oai:ariasmontano.uhu.es:10272/20878
Acesso em linha:http://hdl.handle.net/10272/20878
Access Level:acceso abierto
Palavra-chave:22 Física
Descrição
Resumo: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.