Beta-decay measurement for the A=130 r-process abundance peak

Bulletin of the American Physical Society

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APS April Meeting 2019

Volume 64, Number 3

Saturday–Tuesday, April 13–16, 2019; Denver, Colorado

Session B14: Mini-Symposium: Neutron-star mergers and the astrophysical r process

10:45 AM–12:33 PM, Saturday, April 13, 2019
Sheraton Room: Plaza Court 3

Sponsoring Unit: DNP
Chair: Artemis Spyrou, Michigan State University

Abstract: B14.00004 : Beta-decay measurement for the A=130 r-process abundance peak*

11:45 AM–11:57 AM

Abstract

Presenter:

Alfredo Estrade
(Central Michigan University)

Authors:

Alfredo Estrade
(Central Michigan University)

Oscal Hall
(University of Edinburgh)

Jiajian Liu
(University of Hong Kong)

Giuseppe Lorusso
(Naitional Physical Laboratory)

Fernando Montes
(National Superconducting Cyclotron Laboratory)

Vi Phong
(VNU Hanoi University of Science)

Thomas Davinson
(University of Edinburgh)

Keishi Matsui
(University of Tokyo)

Neerajan Nepal
(Central Michigan University)

Shunji Nishimura
(RIKEN Nishina Center)

Jorge Agramunt
(IFIC, Universidad de Valencia)

Alejandro Algora
(IFIC, Universidad de Valencia)

Nathan T Brewer
(Oak Ridge National Laboratory)

Roger Caballero-Folch
(TRIUMF)

Francisco Calvino
(Universitat Politecnica de Catalunya)

Iris Dillmann
(TRIUMF)

Cesar Domingo-Pardo
(IFIC, Universidad de Valencia)

Robert K. Grzywacz
(University of Tennessee)

Gabor Kiss
(RIKEN Nishina Center)

Bertis C Rasco
(Oak Ridge National Laboratory)

Krzysztof Piotr Rykaczewski
(Oak Ridge National Laboratory)

Jose Luis Tain
(IFIC, Universidad de Valencia)

Ariel Tarifeño-Saldivia
(Universitat Politecnica de Catalunya)

Alvaro Tolosa-Delgado
(IFIC, Universidad de Valencia)

Phil Woods
(University of Edinburgh)

Collaboration:

BRIKEN collaboration

A new generation of radioactive ion beam facilities, such as the Radioactive Ion Beam Factory (RIBF) at the RIKEN Nishina Center for Accelerator Based Science in Japan, have extended the reach of nuclear physics experiments to isotopes near or at the path of the r-process. This will provide, in the near term, a wealth of new nuclear data essential to improve the reliability of r-process nucleosynthesis models. We present the recent work of the BRIKEN collaboration to measure decay half-lives and beta-delayed neutron emission probabilities of very neutron-rich isotopes at RIBF [1,2]. In particular, we will discuss preliminary results for an experiment in the region of Rh to Cs [3], which are progenitors of the A=130 r-process abundance peak.

[1] A. Tolosa-Delgado EPJ Web Conf. 165, 01051 (2017).
[2] A. Tarifeño-Saldivia et al., Jour. Instrum. 12, 04006 (2017).
[3] J. Liu et al., RIKEN Accel. Prog. Rep. 51, 54 (2018).

*This research was sponsored in part by the National Science Foundation grant PHY 1714153, and by the Office of Nuclear Physics, U. S. Department of Energy under contracts DE-AC05-00OR22725.

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