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Title: Beta-decay spectroscopy relevant to the r-process nucleosynthesis

Abstract

A scientific program of beta-decay spectroscopy relevant to r-process nucleosynthesis has been started using high intensity U-beam at the RIBF. The first results of {beta}-decay half-lives of very neutron-rich Kr to Tc nuclides, all of which lie close to the r-process path, suggest a systematic enhancement of the the {beta}-decay rates of the Zr and Nb isotopes around A110 with respect to the predictions of the deformed quasiparticle-random-phase-approximation model (FRDM + QRPA). An impact of the results on the astrophysical r-process is discussed together with the future perspective of the {beta}-decay spectroscopy with the EURICA.

Authors:
 [1];
  1. RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198 (Japan)
Publication Date:
OSTI Identifier:
22075747
Resource Type:
Journal Article
Journal Name:
AIP Conference Proceedings
Additional Journal Information:
Journal Volume: 1484; Journal Issue: 1; Conference: Conference on origin of matter and evolution of galaxies 2011, Wako (Japan), 14-17 Nov 2011; Other Information: (c) 2012 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0094-243X
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; ASTROPHYSICS; BETA DECAY; BETA SPECTROSCOPY; CAPTURE; HALF-LIFE; ION BEAMS; NEUTRON-RICH ISOTOPES; NEUTRONS; NIOBIUM ISOTOPES; NUCLEOSYNTHESIS; R PROCESS; RANDOM PHASE APPROXIMATION; URANIUM IONS; ZIRCONIUM ISOTOPES

Citation Formats

Nishimura, Shunji, and Collaboration: RIBF Decay Collaboration. Beta-decay spectroscopy relevant to the r-process nucleosynthesis. United States: N. p., 2012. Web. doi:10.1063/1.4763397.
Nishimura, Shunji, & Collaboration: RIBF Decay Collaboration. Beta-decay spectroscopy relevant to the r-process nucleosynthesis. United States. doi:10.1063/1.4763397.
Nishimura, Shunji, and Collaboration: RIBF Decay Collaboration. Mon . "Beta-decay spectroscopy relevant to the r-process nucleosynthesis". United States. doi:10.1063/1.4763397.
@article{osti_22075747,
title = {Beta-decay spectroscopy relevant to the r-process nucleosynthesis},
author = {Nishimura, Shunji and Collaboration: RIBF Decay Collaboration},
abstractNote = {A scientific program of beta-decay spectroscopy relevant to r-process nucleosynthesis has been started using high intensity U-beam at the RIBF. The first results of {beta}-decay half-lives of very neutron-rich Kr to Tc nuclides, all of which lie close to the r-process path, suggest a systematic enhancement of the the {beta}-decay rates of the Zr and Nb isotopes around A110 with respect to the predictions of the deformed quasiparticle-random-phase-approximation model (FRDM + QRPA). An impact of the results on the astrophysical r-process is discussed together with the future perspective of the {beta}-decay spectroscopy with the EURICA.},
doi = {10.1063/1.4763397},
journal = {AIP Conference Proceedings},
issn = {0094-243X},
number = 1,
volume = 1484,
place = {United States},
year = {2012},
month = {11}
}