EPJ Web of Conferences (Jan 2023)
Study of decay properties for Ba to Nd nuclei relevant for the formation of the r-process rare-earth peak (A∼160)
- Pallàs M.,
- Tarifeño-Saldivia A.,
- Kiss G. G.,
- Tain J. L.,
- Tolosa-Delgado A.,
- Vitéz-Sveiczer A.,
- Calviño F.,
- Agramunt J.,
- Aguilera P.,
- Algora A.,
- Allmond J. M.,
- Baba H.,
- Brewer N. T.,
- Caballero-Folch R.,
- Coleman-Smith P. J.,
- Cortes G.,
- Davinson T.,
- Dillmann I.,
- Domingo-Pardo C.,
- Estrade A.,
- Fukuda N.,
- Go S.,
- Griffin C. J.,
- Grzywacz R. K.,
- Hall O.,
- Harkness-Brennan L. J.,
- Isobe T.,
- Kahl D.,
- King T. T.,
- Korgul A.,
- Kovács S.,
- Kubono S.,
- Labiche M.,
- Liu J.,
- Madurga M.,
- Miernik K.,
- Molina F.,
- Mont-Geli N.,
- Morales A. I.,
- Nácher E.,
- Navarro A.,
- Nepal N.,
- Nishimura S.,
- Piersa-Silkowska M.,
- Phong V.,
- Rasco B. C.,
- Romero-Barrientos J.,
- Rubio B.,
- Rykaczewski K. P.,
- Saito Y.,
- Sakurai H.,
- Shimizu Y.,
- Singh M.,
- Sumikama T.,
- Suzuki H.,
- Szegedi T. N.,
- Takeda H.,
- Wang K.,
- Wolińska-Cichocka M.,
- Woods P. J.,
- Yokoyama R.
Affiliations
- Pallàs M.
- Institut de Tècniques Energètiques (INTE), Universitat Politècnica de Catalunya (UPC)
- Tarifeño-Saldivia A.
- Instituto de Física Corpuscular (IFIC), CSIC-UV
- Kiss G. G.
- Institute for Nuclear Research (ATOMKI)
- Tain J. L.
- Instituto de Física Corpuscular (IFIC), CSIC-UV
- Tolosa-Delgado A.
- Department of Physics, University of Jyväskylä
- Vitéz-Sveiczer A.
- Institute for Nuclear Research (ATOMKI)
- Calviño F.
- Institut de Tècniques Energètiques (INTE), Universitat Politècnica de Catalunya (UPC)
- Agramunt J.
- Instituto de Física Corpuscular (IFIC), CSIC-UV
- Aguilera P.
- Centro de Investigación en Física Nuclear y Espectroscopía de Neutrones (CEFNEN). Comisión Chilena de Energía Nuclear, Nueva Bilbao
- Algora A.
- Instituto de Física Corpuscular (IFIC), CSIC-UV
- Allmond J. M.
- Physics Division, Oak Ridge National Laboratory
- Baba H.
- RIKEN Nishina Center
- Brewer N. T.
- Department of Physics and Astronomy, University of Tennessee
- Caballero-Folch R.
- TRIUMF
- Coleman-Smith P. J.
- STFC Daresbury Laboratory, Daresbury
- Cortes G.
- Institut de Tècniques Energètiques (INTE), Universitat Politècnica de Catalunya (UPC)
- Davinson T.
- School of Physics and Astronomy, The University of Edinburgh
- Dillmann I.
- TRIUMF
- Domingo-Pardo C.
- Instituto de Física Corpuscular (IFIC), CSIC-UV
- Estrade A.
- Central Michigan University
- Fukuda N.
- RIKEN Nishina Center
- Go S.
- Department of Physics, Kyushu University
- Griffin C. J.
- TRIUMF
- Grzywacz R. K.
- Department of Physics and Astronomy, University of Tennessee
- Hall O.
- School of Physics and Astronomy, The University of Edinburgh
- Harkness-Brennan L. J.
- Department of Physics, University of Liverpool
- Isobe T.
- RIKEN Nishina Center
- Kahl D.
- School of Physics and Astronomy, The University of Edinburgh
- King T. T.
- Department of Physics and Astronomy, University of Tennessee
- Korgul A.
- Faculty of Physics, University of Warsaw
- Kovács S.
- University of Debrecen
- Kubono S.
- RIKEN Nishina Center
- Labiche M.
- STFC Daresbury Laboratory, Daresbury
- Liu J.
- Department of Physics, the University of Hong Kong
- Madurga M.
- Department of Physics and Astronomy, University of Tennessee
- Miernik K.
- Faculty of Physics, University of Warsaw
- Molina F.
- Centro de Investigación en Física Nuclear y Espectroscopía de Neutrones (CEFNEN). Comisión Chilena de Energía Nuclear, Nueva Bilbao
- Mont-Geli N.
- Institut de Tècniques Energètiques (INTE), Universitat Politècnica de Catalunya (UPC)
- Morales A. I.
- Instituto de Física Corpuscular (IFIC), CSIC-UV
- Nácher E.
- Instituto de Física Corpuscular (IFIC), CSIC-UV
- Navarro A.
- Institut de Tècniques Energètiques (INTE), Universitat Politècnica de Catalunya (UPC)
- Nepal N.
- RIKEN Nishina Center
- Nishimura S.
- RIKEN Nishina Center
- Piersa-Silkowska M.
- Faculty of Physics, University of Warsaw
- Phong V.
- RIKEN Nishina Center
- Rasco B. C.
- Department of Physics and Astronomy, University of Tennessee
- Romero-Barrientos J.
- Centro de Investigación en Física Nuclear y Espectroscopía de Neutrones (CEFNEN). Comisión Chilena de Energía Nuclear, Nueva Bilbao
- Rubio B.
- Instituto de Física Corpuscular (IFIC), CSIC-UV
- Rykaczewski K. P.
- Physics Division, Oak Ridge National Laboratory
- Saito Y.
- TRIUMF
- Sakurai H.
- RIKEN Nishina Center
- Shimizu Y.
- RIKEN Nishina Center
- Singh M.
- Department of Physics and Astronomy, University of Tennessee
- Sumikama T.
- RIKEN Nishina Center
- Suzuki H.
- RIKEN Nishina Center
- Szegedi T. N.
- Institute for Nuclear Research (ATOMKI)
- Takeda H.
- RIKEN Nishina Center
- Wang K.
- Central Michigan University
- Wolińska-Cichocka M.
- Heavy Ion Laboratory, University of Warsaw
- Woods P. J.
- School of Physics and Astronomy, The University of Edinburgh
- Yokoyama R.
- Center for Nuclear Study, The University of Tokyo
- DOI
- https://doi.org/10.1051/epjconf/202327912003
- Journal volume & issue
-
Vol. 279
p. 12003
Abstract
At the RIKEN Nishina Center, exotic neutron-rich isotopes of Ba, La, Ce, Pr, and Nd were measured. This work reports their half-lives (T1/2) and β-delayed neutron-emission probabilities (Pxn). The setup consisted of the BigRIPS in-flight separator for particle identification, the Advanced Implantation Detector Array (AIDA) for ions and β detection, and the BRIKEN neutron counter for neutron detection. Using this arrangement, 4 new T1/2 and 14 new P1n were measured. Furthermore, 38 T1/2 and 2 P1n values were remeasured, decreasing the uncertainties for some of them. In addition to improving predictions of nucleosynthesis models that describe the production of the rare-earth peak at A ∼ 160 via the r-process, these additional experimental data should help to constrain theoretical models for calculations of T1/2 and Pxn in this region.
