First evidence of multiple β-delayed neutron emission for isotopes with a > 100
Caballero-Folch, R., Dillmann, I., Agramunt, J., Tain, J. L., Domingo-Pardo, C., Algora, A., Äystö, J., Calvino, F., Canete, L., Cortes, G., Eronen, T., Ganioglu, E., Gelletly, W., Gorelov, D., Guadilla, V., Hakala, J., Jokinen, A., Kankainen, A., Kolhinen, V., . . . Voss, A. (2017). First evidence of multiple β-delayed neutron emission for isotopes with a > 100. Acta Physica Polonica B, 48(3), 517-522. https://doi.org/10.5506/APhysPolB.48.517
Julkaistu sarjassa
Acta Physica Polonica BTekijät
Päivämäärä
2017Tekijänoikeudet
© the Authors 2017. This is an open access article distributed under the terms of a Creative Commons License. Funded by SCOAP3.
The β-delayed neutron emission probability, Pn, of very neutron-rich
nuclei allows us to achieve a better understanding of the nuclear structure
above the neutron separation energy, Sn. The emission of neutrons can become
the dominant decay process in neutron-rich astrophysical phenomena
such as the rapid neutron capture process (r-process). There are around
600 accessible isotopes for which β-delayed one-neutron emission (β1n) is
energetically allowed, but the branching ratio has only been determined for
about one third of them. β1n decays have been experimentally measured
up to the mass A ∼ 150, plus a single measurement of 210Tl. Concerning
two-neutron emitters (β2n), ∼ 300 isotopes are accessible and only 24 have
been measured so far up to the mass A = 100. In this contribution, we
report recent experiments which allowed the measurement of β1n emitters
for masses beyond A > 200 and N > 126 and identified the heaviest β2n
emitter measured so far, 136Sb.
Julkaisija
Jagellonian UniversityISSN Hae Julkaisufoorumista
0587-4254Julkaisu tutkimustietojärjestelmässä
https://converis.jyu.fi/converis/portal/detail/Publication/26986120
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First determination of β-delayed multiple neutron emission beyond A = 100 through direct neutron measurement : The P2n value of 136Sb
Caballero-Folch, R.; Dillmann, I.; Agramunt, J.; Taín, J. L.; Algora, A.; Äystö, Juha; Calviño, F.; Canete, Laetitia; Cortès, G.; Domingo-Pardo, C.; Eronen, Tommi; Ganioglu, E.; Gelletly, W.; Gorelov, Dmitry; Guadilla, V.; Hakala, Jani; Jokinen, Ari; Kankainen, Anu; Kolhinen, Veli; Koponen, Jukka; Marta, M.; Mendoza, E.; Montaner-Pizá, A.; Moore, Iain; Nobs, C. R.; Orrigo, S. E. A.; Penttilä, Heikki; Pohjalainen, Ilkka; Reinikainen, Juuso; Riego, A.; Rinta-Antila, Sami; Rubio, B.; Salvador-Castiñeira, P.; Simutkin, Vasily; Tarifeño-Saldivia, A.; Tolosa-Delgado, A.; Voss, Annika (American Physical Society, 2018)Background: β-delayed multiple neutron emission has been observed for some nuclei with A≤100, being the Rb100 the heaviest β2n emitter measured to date. So far, only 25P2n values have been determined for the ≈300 nuclei ... -
Precision Mass Measurements on Neutron-Rich Rare-Earth Isotopes at JYFLTRAP : Reduced Neutron Pairing and Implications for r-Process Calculations
Vilén, Markus; Kelly, J. M.; Kankainen, Anu; Brodeur, M.; Aprahamian, A.; Canete, Laetitia; Eronen, Tommi; Jokinen, Ari; Kuta, T.; Moore, Iain; Mumpower, M. R.; Nesterenko, Dmitrii; Penttilä, Heikki; Pohjalainen, Ilkka; Porter, W. S.; Rinta-Antila, Sami; Surman, R.; Voss, Annika; Äystö, Juha (American Physical Society, 2018)The rare-earth peak in the r-process abundance pattern depends sensitively on both the astrophysical conditions and subtle changes in nuclear structure in the region. This work takes an important step towards elucidating ... -
The study of neutron-rich nuclei production in the region of the closed shell N=126 in the multi-nucleon transfer reaction 136Xe+208Pb
Novikov, K.; Harca, I.M.; Kozulin, E.M.; Dmitriev, S.; Itkis, J.; Knyazheva, G.; Loktev, T.; Corradi, L.; Valiente-Dobon, J.; Fioretto, E.; Montanari, D.; Stefanini, A.M.; Vardaci, E.; Quero, D.; Montagnoli, G.; Scarlassara, F.; Strano, E.; Pollarolo, G.; Piot, J.; Mijatović, T.; Szilner, S.; Ackermann, D.; Chubarian, G.; Trzaska, Wladyslaw (Institute of Physics Publishing Ltd., 2016)The unexplored area of heavy neutron rich nuclei is extremely important for nuclear astrophysics investigations and, in particular, for the understanding of the r-process of astrophysical nucleogenesis. For the production ... -
Beta decay of neutron-rich 118Ag and 120Ag isotopes
Wang, Youbao; Rinta-Antila, Sami; Dendooven, Peter; Huikari, Jussi; Jokinen, Ari; Kolhinen, Vesa; Lhersonneau, Gérard; Nieminen, Arto; Nummela, Saara; Penttilä, Heikki; Peräjärvi, Kari; Szerypo, Jerzy; Wang, Jicheng; Äystö, Juha (American Physical Society, 2003)b decays of on-line mass-separated neutron-rich 118Ag and 120Ag isotopes have been studied by using b-g and g-g coincidence spectroscopy. Extended decay schemes to the 118,120Cd daughter nuclei have been constructed. The ... -
Evolution of deformation in neutron-rich Ba isotopes up to A=150
Lică, R.; Benzoni, G.; Rodríguez, T. R.; Borge, M. J. G.; Fraile, L. M.; Mach, H.; Morales, A. I.; Madurga, M.; Sotty, C. O.; Vedia, V.; De Witte, H.; Benito, J.; Bernard, R. N.; Berry, T.; Bracco, A.; Camera, F.; Ceruti, S.; Charviakova, V.; Cieplicka-Oryńczak, N.; Costache, C.; Crespi, F. C. L.; Creswell, J.; Fernandez-Martínez, G.; Fynbo, H.; Greenlees, Paul; Homm, I.; Huyse, M.; Jolie, J.; Karayonchev, V.; Köster, U.; Konki, Joonas; Kröll, T.; Kurcewicz, J.; Kurtukian-Nieto, T.; Lazarus, I.; Lund, M. V.; Mărginean, N.; Mărginean, R.; Mihai, C.; Mihai, R. E.; Negret, A.; Orduz, A.; Patyk, Z.; Pascu, S.; Pucknell, V.; Rahkila, Panu; Rapisarda, E.; Regis, J. M.; Robledo, L. M.; Rotaru, F.; Saed-Samii, N.; Sánchez-Tembleque, V.; Stanoiu, M.; Tengblad, O.; Thuerauf, M.; Turturica, A.; Van Duppen, P.; Warr, N. (American Physical Society, 2018)The occurrence of octupolar shapes in the Ba isotopic chain was recently established experimentally up to N = 90 . To further extend the systematics, the evolution of shapes in the most neutron-rich members of the ...
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