First Measurement of Several β -Delayed Neutron Emitting Isotopes beyond N=126

R. Caballero-Folch, C. Domingo-Pardo, J. Agramunt, A. Algora, F. Ameil, A. Arcones, Y. Ayyad, J. Benlliure, I. N. Borzov, M. Bowry, F. Calviño, D. Cano-Ott, G. Cortés, T. Davinson, I. Dillmann, A. Estrade, A. Evdokimov, T. Faestermann, F. Farinon, D. GalavizA. R. García, H. Geissel, W. Gelletly, R. Gernhäuser, M. B. Gómez-Hornillos, C. Guerrero, M. Heil, C. Hinke, R. Knöbel, I. Kojouharov, J. Kurcewicz, N. Kurz, Yu A. Litvinov, L. Maier, J. Marganiec, T. Marketin, M. Marta, T. Martínez, G. Martínez-Pinedo, F. Montes, I. Mukha, D. R. Napoli, C. Nociforo, C. Paradela, S. Pietri, Zs Podolyák, A. Prochazka, S. Rice, A. Riego, B. Rubio, H. Schaffner, Ch Scheidenberger, K. Smith, E. Sokol, K. Steiger, B. Sun, J. L. Taín, M. Takechi, D. Testov, H. Weick, E. Wilson, J. S. Winfield, R. Wood, P. Woods, A. Yeremin

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Abstract

The β-delayed neutron emission probabilities of neutron rich Hg and Tl nuclei have been measured together with β-decay half-lives for 20 isotopes of Au, Hg, Tl, Pb, and Bi in the mass region N126. These are the heaviest species where neutron emission has been observed so far. These measurements provide key information to evaluate the performance of nuclear microscopic and phenomenological models in reproducing the high-energy part of the β-decay strength distribution. This provides important constraints on global theoretical models currently used in r-process nucleosynthesis.

Original languageEnglish
Article number012501
JournalPhysical review letters
Volume117
Issue number1
DOIs
Publication statusPublished - Jun 29 2016

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Caballero-Folch, R., Domingo-Pardo, C., Agramunt, J., Algora, A., Ameil, F., Arcones, A., Ayyad, Y., Benlliure, J., Borzov, I. N., Bowry, M., Calviño, F., Cano-Ott, D., Cortés, G., Davinson, T., Dillmann, I., Estrade, A., Evdokimov, A., Faestermann, T., Farinon, F., ... Yeremin, A. (2016). First Measurement of Several β -Delayed Neutron Emitting Isotopes beyond N=126. Physical review letters, 117(1), [012501]. https://doi.org/10.1103/PhysRevLett.117.012501