94 beta-Decay Half-Lives of Neutron-Rich Cs-55 to Ho-67: Experimental Feedback and Evaluation of the r-Process Rare-Earth Peak Formation

J. Wu; S. Nishimura; G. Lorusso; P. Moller; E. Ideguchi; P. -H. Regan; G. S. Simpson; P. -A. Soderstrom; P. M. Walker; H. Watanabe; Z. Y. Xu; H. Baba; F. Browne; R. Daido; P. Doornenbal; Y. F. Fang; G. Gey; T. Isobe; P. S. Lee; J. J. Liu; Z. Li; Z. Korkulu; Z. Patel; V. Phong; S. Rice; H. Sakurai; L. Sinclair; T. Sumikama; M. Tanaka; A. Yagi; Y. L. Ye; R. Yokoyama; G. X. Zhang; T. Alharbi; N. Aoi; F. L. Bello Garrote; G. Benzoni; A. M. Bruce; R. J. Carroll; K. Y. Chae; Z. Dombradi; A. Estrade; A. Gottardo; C. J. Griffin; H. Kanaoka; I. Kojouharov; F. G. Kondev; S. Kubono; N. Kurz; I. Kuti; S. Lalkovski; G. J. Lane; E. J. Lee; T. Lokotko; G. Lotay; C. -B. Moon; H. Nishibata; I. Nishizuka; C. R. Nita; A. Odahara; Zs Podolyak; O. J. Roberts; H. Schaffner; C. Shand; J. Taprogge; S. Terashima; Z. Vajta; S. Yoshida

doi:10.1103/PhysRevLett.118.072701

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94 beta-Decay Half-Lives of Neutron-Rich Cs-55 to Ho-67: Experimental Feedback and Evaluation of the r-Process Rare-Earth Peak Formation

J. Wu, S. Nishimura, G. Lorusso, P. Moller, E. Ideguchi, P. -H. Regan, G. S. Simpson, P. -A. Soderstrom, P. M. Walker, H. Watanabe, …

Physical review letters, Vol.118(7), p.072701

16/02/2017

DOI: https://doi.org/10.1103/PhysRevLett.118.072701

PMID: 28256889

Abstract

Physical Sciences

Physics

Physics, Multidisciplinary

Science & Technology

The beta-decay half-lives of 94 neutron-rich nuclei Cs144-151, Ba146-154, La148-156, Ce150-158, Pr153-160, Nd156-162, Pm159-163, Sm160-166, Eu161-168, Gd165-170, Tb166-172, Dy169-173, Ho172-175, and two isomeric states Er-174m, Dy-172m were measured at the Radioactive Isotope Beam Factory, providing a new experimental basis to test theoretical models. Strikingly large drops of beta-decay half-lives are observed at neutron-number N = 97 for Ce-58, Pr-59, Nd-60, and Sm-62, and N = 105 for Eu-63, Gd-64, Tb-65, and Dy-66. Features in the data mirror the interplay between pairing effects and microscopic structure. r-process network calculations performed for a range of mass models and astrophysical conditions show that the 57 half-lives measured for the first time play an important role in shaping the abundance pattern of rare-earth elements in the solar system.

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Title: 94 beta-Decay Half-Lives of Neutron-Rich Cs-55 to Ho-67: Experimental Feedback and Evaluation of the r-Process Rare-Earth Peak Formation
Creators - without role: J. Wu - Peking University
S. Nishimura - RIKEN
G. Lorusso - RIKEN
P. Moller - Los Alamos Natl Lab, Theoret Div, Los Alamos, NM 87545 USA
E. Ideguchi - Osaka University
P. -H. Regan - NPL, Teddington TW11 0LW, Middx, England
G. S. Simpson - Institut National de Physique Nucléaire et de Physique des Particules
P. -A. Soderstrom - RIKEN
P. M. Walker - University of Surrey
H. Watanabe - Beihang University
Z. Y. Xu - University of Hong Kong
H. Baba - RIKEN
F. Browne - University of Brighton
R. Daido - Osaka University
P. Doornenbal - RIKEN
Y. F. Fang - Osaka University
G. Gey - RIKEN
T. Isobe - RIKEN
P. S. Lee - Chung-Ang University
J. J. Liu - University of Hong Kong
Z. Li - Peking University
Z. Korkulu - Hungarian Acad Sci, Inst Nucl Res, P Box 51, H-4001 Debrecen, Hungary
Z. Patel
V. Phong - RIKEN
S. Rice - RIKEN
H. Sakurai - RIKEN
L. Sinclair - RIKEN
T. Sumikama - RIKEN
M. Tanaka - Osaka University
A. Yagi - Osaka University
Y. L. Ye - Peking University
R. Yokoyama - The University of Tokyo
G. X. Zhang - Beihang University
T. Alharbi - Almajmaah Univ, Coll Sci Zulfi, Dept Phys, POB 1712, Al Zulfi 11932, Saudi Arabia
N. Aoi - Osaka University
F. L. Bello Garrote - University of Oslo
G. Benzoni - Mylan
A. M. Bruce - University of Brighton
R. J. Carroll - University of Surrey
K. Y. Chae - Sungkyunkwan University
Z. Dombradi - Hungarian Acad Sci, Inst Nucl Res, P Box 51, H-4001 Debrecen, Hungary
A. Estrade - University of Edinburgh
A. Gottardo - University of Padua
C. J. Griffin - University of Edinburgh
H. Kanaoka - Osaka University
I. Kojouharov - GSI Helmholtzzentrum Schwer Forsch GmbH, D-64291 Darmstadt, Germany
F. G. Kondev - Argonne Natl Lab, Nucl Engn Div, 9700 S Cass Ave, Argonne, IL 60439 USA
S. Kubono
N. Kurz - GSI Helmholtzzentrum Schwer Forsch GmbH, D-64291 Darmstadt, Germany
I. Kuti - Hungarian Acad Sci, Inst Nucl Res, P Box 51, H-4001 Debrecen, Hungary
S. Lalkovski - University of Surrey
G. J. Lane - ACT
E. J. Lee - Sungkyunkwan University
T. Lokotko - University of Hong Kong
G. Lotay - University of Surrey
C. -B. Moon - Hoseo University
H. Nishibata - Osaka University
I. Nishizuka - Tohoku University
C. R. Nita - University of Brighton
A. Odahara - Osaka University
Zs Podolyak - University of Surrey
O. J. Roberts - Supreme Council Of Health
H. Schaffner - GSI Helmholtzzentrum Schwer Forsch GmbH, D-64291 Darmstadt, Germany
C. Shand - University of Surrey
J. Taprogge - Univ Autonoma Madrid, Dept Fsica Teor, E-28049 Madrid, Spain
S. Terashima - Beihang University
Z. Vajta - Hungarian Acad Sci, Inst Nucl Res, P Box 51, H-4001 Debrecen, Hungary
S. Yoshida - Osaka University
Publication Details: Physical review letters, Vol.118(7), p.072701
Publisher: Amer Physical Soc
Number of pages: 7
Grant note: K100835 / Hungarian Scientific Research Fund OTKA; Orszagos Tudomanyos Kutatasi Alapprogramok (OTKA) Rare Isotope Science Project - Ministry of Education, Science, and Technology (MEST) ST/P003982/1 / STFC; UK Research & Innovation (UKRI); Science & Technology Facilities Council (STFC) 2013M7A1A1075764 / National Research Foundation (NRF) of Korea; National Research Foundation of Korea RIKEN Foreign Research Program NNX10AH78G / NASA; National Aeronautics & Space Administration (NASA) FPA 2009-13377-C02; FPA2011-29854-C04 / Spanish Ministerio de Ciencia e Innovacin; Spanish Government NRF-2009-0093817; NRF-2015R1D1A1A01056918; NRF-2016 R1A5A1013277; NRF-2013R1A1A2063017 / National Research Foundation Grant - Korean Government; National Research Foundation of Korea 24105004 / Grants-in-Aid for Scientific Research; Ministry of Education, Culture, Sports, Science and Technology, Japan (MEXT); Japan Society for the Promotion of Science; Grants-in-Aid for Scientific Research (KAKENHI) UK Science and Technology Facilities Council; UK Research & Innovation (UKRI); Science & Technology Facilities Council (STFC) ST/J003468/2 / Science and Technology Facilities Council; UK Research & Innovation (UKRI); Science & Technology Facilities Council (STFC) DE-AC02-06CH11357 / U.S. Department of Energy, Office of Science, Office of Nuclear Physics; United States Department of Energy (DOE) 25247045 / KAKENHI; Ministry of Education, Culture, Sports, Science and Technology, Japan (MEXT); Japan Society for the Promotion of Science; Grants-in-Aid for Scientific Research (KAKENHI) DE AC52-06NA25396 / NNSA of the U.S. DOE at Los Alamos National Laboratory; National Nuclear Security Administration
Identifiers: 9918092808331
Academic Unit: Majmaah University
Language: English
Resource Type: Journal article