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

Caballero-Folch, R. and Domingo-Pardo, C. and Agramunt, J. and Algora, A. and Ameil, F. and Arcones, A. and Ayyad, Y. and Benlliure, J. and Borzov, I. N. and Bowry, M. and Calvino, F. and Cano-Ott, D. and Cortes, G. and Davinson, T. and Dillmann, I. and Estrade, A. and Evdokimov, A. and Faestermann, T. and Farinon, F. and Galaviz, D. and Garcia, A. R. and Geissel, H. and Gelletly, W. and Gernhauser, R. and Gomez-Hornillos, M. B. and Guerrero, C. and Heil, M. and Hinke, C. and Knobel, R. and Kojouharov, I. and Kurcewicz, J. and Kurz, N. and Litvinov, Yu. A. and Maier, L. and Marganiec, J. and Marketin, Tomislav and Marta, M. and Martinez, T. and Martinez-Pinedo, G. and Montes, F. and Mukha, I. and Napoli, D. R. and Nociforo, C. and Paradela, C. and Pietri, S. and Podolyak, Zs. and Prochazka, A. and Rice, S. and Riego, A. and Rubio, B. and Schaffner, H. and Scheidenberger, Ch. and Smith, K. and Sokol, E. and Steiger, K. and Sun, B. and Tain, J. L. and Takechi, M. and Testov, D. and Weick, H. and Wilson, E. and Winfield, J. S. and Wood, R. and Woods, P. and Yeremin, A. (2016) First Measurement of Several β-Delayed Neutron Emitting Isotopes Beyond N=126. Physical Review Letters, 117 (1). pp. 12501-6. ISSN 0031-9007

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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 N ≳ 126. 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.

Item Type: Article
Date: 29 June 2016
Subjects: NATURAL SCIENCES > Physics
Additional Information: © 2016 American Physical Society. Published by the American Physical Society under the terms of the Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Received 4 November 2015; published 29 June 2016.
Divisions: Faculty of Science > Department of Physics
Publisher: American Physical Society
Depositing User: Gordana Stubičan Ladešić
Date Deposited: 13 Jul 2016 11:50
Last Modified: 29 Nov 2017 16:45

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