New states in 18Na and 19Mg observed in the two-proton decay of 19Mg

Previously unknown states in 18Na and 19Mg have been studied by measuring the trajectories of their decay products with microstrip detectors. Analyzing angular correlations of the fragments provided information on decay energies and widths of the parent states. The ground state of 18Na has been dete...

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Detalles Bibliográficos
Autores: Mukha, I., Grigorenko, L., Acosta Sánchez, Luis Armando, Álvarez, M. A. G., Casarejos, E., Chatillón, A., Cortina Gil, D., Espino, José Manuel, Fomichev, A., García Ramos, José Enrique, Geissel, H., Gómez Camacho, Joaquín, Hofmann, J., Kiselev, O., Korsheninnikov, A., Kurz, N., Litvinov, Yu. A., Martel Bravo, Ismael, Nociforo, C., Ott, W., Pfützner, M., Rodríguez Tajes, C., Roeckl, E., Scheidenberger, C., Stanoiu, M., Sümmerer, K., Weick, H., Woods, P. J.
Tipo de recurso: artículo
Fecha de publicación:2012
País:España
Institución:Universidad de Huelva (UHU)
Repositorio:Arias Montano. Repositorio Institucional de la Universidad de Huelva
Idioma:inglés
OAI Identifier:oai:ariasmontano.uhu.es:10272/6097
Acceso en línea:http://hdl.handle.net/10272/6097
Access Level:acceso abierto
Palabra clave:Two-proton radioactivity
Radioactivity
Descripción
Sumario:Previously unknown states in 18Na and 19Mg have been studied by measuring the trajectories of their decay products with microstrip detectors. Analyzing angular correlations of the fragments provided information on decay energies and widths of the parent states. The ground state of 18Na has been detected and its one-proton decay energy of 1.23(15) MeV determined. Four previously unknown states in 19Mg at 2.1, 2.9, 3.6, and 5.2 MeV have been observed. The competition between simultaneous and sequential two-proton emission of states in 19Mg is discussed, and the conclusion of a direct mechanism of 2p radioactivity of the 19Mg ground state is confirmed.

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