94 β -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. Möller; E. Ideguchi; P. H. Regan; G. S. Simpson; P. A. Söderström; 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 Podolyák; O. J. Roberts; H. Schaffner; C. Shand; J. Taprogge; S. Terashima; Z. Vajta; S. Yoshida

doi:10.1103/PhysRevLett.118.072701

94 β -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. Möller, E. Ideguchi, P. H. Regan, G. S. Simpson, P. A. Söderström, 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. LiuZ. 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 Podolyák, O. J. Roberts, H. Schaffner, C. Shand, J. Taprogge, S. Terashima, Z. Vajta, S. Yoshida

Research output: Contribution to journal › Article › peer-review

77 Citations (Scopus)

Abstract

The β-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 Er174m, Dy172m were measured at the Radioactive Isotope Beam Factory, providing a new experimental basis to test theoretical models. Strikingly large drops of β-decay half-lives are observed at neutron-number N=97 for Ce58, Pr59, Nd60, and Sm62, and N=105 for Eu63, Gd64, Tb65, and Dy66. 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.

Original language	English
Article number	072701
Journal	Physical Review Letters
Volume	118
Issue number	7
DOIs	https://doi.org/10.1103/PhysRevLett.118.072701
Publication status	Published - 16 Feb 2017

Access to Document

10.1103/PhysRevLett.118.072701

Cite this

Wu, J., Nishimura, S., Lorusso, G., Möller, P., Ideguchi, E., Regan, P. H., Simpson, G. S., Söderström, P. A., Walker, P. M., Watanabe, H., Xu, Z. Y., Baba, H., Browne, F., Daido, R., Doornenbal, P., Fang, Y. F., Gey, G., Isobe, T., Lee, P. S., ... Yoshida, S. (2017). 94 β -Decay Half-Lives of Neutron-Rich Cs 55 to Ho 67: Experimental Feedback and Evaluation of the r -Process Rare-Earth Peak Formation. Physical Review Letters, 118(7), Article 072701. https://doi.org/10.1103/PhysRevLett.118.072701

@article{83540fb86bff421caf6346ad8c6f52b7,

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

abstract = "The β-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 Er174m, Dy172m were measured at the Radioactive Isotope Beam Factory, providing a new experimental basis to test theoretical models. Strikingly large drops of β-decay half-lives are observed at neutron-number N=97 for Ce58, Pr59, Nd60, and Sm62, and N=105 for Eu63, Gd64, Tb65, and Dy66. 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.",

author = "J. Wu and S. Nishimura and G. Lorusso and P. M{\"o}ller and E. Ideguchi and Regan, {P. H.} and Simpson, {G. S.} and S{\"o}derstr{\"o}m, {P. A.} and Walker, {P. M.} and H. Watanabe and Xu, {Z. Y.} and H. Baba and F. Browne and R. Daido and P. Doornenbal and Fang, {Y. F.} and G. Gey and T. Isobe and Lee, {P. S.} and Liu, {J. J.} and Z. Li and Z. Korkulu and Z. Patel and V. Phong and S. Rice and H. Sakurai and L. Sinclair and T. Sumikama and M. Tanaka and A. Yagi and Ye, {Y. L.} and R. Yokoyama and Zhang, {G. X.} and T. Alharbi and N. Aoi and {Bello Garrote}, {F. L.} and G. Benzoni and Bruce, {A. M.} and Carroll, {R. J.} and Chae, {K. Y.} and Z. Dombradi and A. Estrade and A. Gottardo and Griffin, {C. J.} and H. Kanaoka and I. Kojouharov and Kondev, {F. G.} and S. Kubono and N. Kurz and I. Kuti and S. Lalkovski and Lane, {G. J.} and Lee, {E. J.} and T. Lokotko and G. Lotay and Moon, {C. B.} and H. Nishibata and I. Nishizuka and Nita, {C. R.} and A. Odahara and Zs Podoly{\'a}k and Roberts, {O. J.} and H. Schaffner and C. Shand and J. Taprogge and S. Terashima and Z. Vajta and S. Yoshida",

note = "Publisher Copyright: {\textcopyright} 2017 American Physical Society.",

year = "2017",

month = feb,

day = "16",

doi = "10.1103/PhysRevLett.118.072701",

language = "English",

volume = "118",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "7",

}

Wu, J, Nishimura, S, Lorusso, G, Möller, P, Ideguchi, E, Regan, PH, Simpson, GS, Söderström, PA, Walker, PM, Watanabe, H, Xu, ZY, Baba, H, Browne, F, Daido, R, Doornenbal, P, Fang, YF, Gey, G, Isobe, T, Lee, PS, Liu, JJ, Li, Z, Korkulu, Z, Patel, Z, Phong, V, Rice, S, Sakurai, H, Sinclair, L, Sumikama, T, Tanaka, M, Yagi, A, Ye, YL, Yokoyama, R, Zhang, GX, Alharbi, T, Aoi, N, Bello Garrote, FL, Benzoni, G, Bruce, AM, Carroll, RJ, Chae, KY, Dombradi, Z, Estrade, A, Gottardo, A, Griffin, CJ, Kanaoka, H, Kojouharov, I, Kondev, FG, Kubono, S, Kurz, N, Kuti, I, Lalkovski, S, Lane, GJ, Lee, EJ, Lokotko, T, Lotay, G, Moon, CB, Nishibata, H, Nishizuka, I, Nita, CR, Odahara, A, Podolyák, Z, Roberts, OJ, Schaffner, H, Shand, C, Taprogge, J, Terashima, S, Vajta, Z & Yoshida, S 2017, '94 β -Decay Half-Lives of Neutron-Rich Cs 55 to Ho 67: Experimental Feedback and Evaluation of the r -Process Rare-Earth Peak Formation', Physical Review Letters, vol. 118, no. 7, 072701. https://doi.org/10.1103/PhysRevLett.118.072701

TY - JOUR

T1 - 94 β -Decay Half-Lives of Neutron-Rich Cs 55 to Ho 67

T2 - Experimental Feedback and Evaluation of the r -Process Rare-Earth Peak Formation

AU - Wu, J.

AU - Nishimura, S.

AU - Lorusso, G.

AU - Möller, P.

AU - Ideguchi, E.

AU - Regan, P. H.

AU - Simpson, G. S.

AU - Söderström, P. A.

AU - Walker, P. M.

AU - Watanabe, H.

AU - Xu, Z. Y.

AU - Baba, H.

AU - Browne, F.

AU - Daido, R.

AU - Doornenbal, P.

AU - Fang, Y. F.

AU - Gey, G.

AU - Isobe, T.

AU - Lee, P. S.

AU - Liu, J. J.

AU - Li, Z.

AU - Korkulu, Z.

AU - Patel, Z.

AU - Phong, V.

AU - Rice, S.

AU - Sakurai, H.

AU - Sinclair, L.

AU - Sumikama, T.

AU - Tanaka, M.

AU - Yagi, A.

AU - Ye, Y. L.

AU - Yokoyama, R.

AU - Zhang, G. X.

AU - Alharbi, T.

AU - Aoi, N.

AU - Bello Garrote, F. L.

AU - Benzoni, G.

AU - Bruce, A. M.

AU - Carroll, R. J.

AU - Chae, K. Y.

AU - Dombradi, Z.

AU - Estrade, A.

AU - Gottardo, A.

AU - Griffin, C. J.

AU - Kanaoka, H.

AU - Kojouharov, I.

AU - Kondev, F. G.

AU - Kubono, S.

AU - Kurz, N.

AU - Kuti, I.

AU - Lalkovski, S.

AU - Lane, G. J.

AU - Lee, E. J.

AU - Lokotko, T.

AU - Lotay, G.

AU - Moon, C. B.

AU - Nishibata, H.

AU - Nishizuka, I.

AU - Nita, C. R.

AU - Odahara, A.

AU - Podolyák, Zs

AU - Roberts, O. J.

AU - Schaffner, H.

AU - Shand, C.

AU - Taprogge, J.

AU - Terashima, S.

AU - Vajta, Z.

AU - Yoshida, S.

PY - 2017/2/16

Y1 - 2017/2/16

N2 - The β-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 Er174m, Dy172m were measured at the Radioactive Isotope Beam Factory, providing a new experimental basis to test theoretical models. Strikingly large drops of β-decay half-lives are observed at neutron-number N=97 for Ce58, Pr59, Nd60, and Sm62, and N=105 for Eu63, Gd64, Tb65, and Dy66. 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.

AB - The β-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 Er174m, Dy172m were measured at the Radioactive Isotope Beam Factory, providing a new experimental basis to test theoretical models. Strikingly large drops of β-decay half-lives are observed at neutron-number N=97 for Ce58, Pr59, Nd60, and Sm62, and N=105 for Eu63, Gd64, Tb65, and Dy66. 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.

UR - http://www.scopus.com/inward/record.url?scp=85013487527&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.118.072701

DO - 10.1103/PhysRevLett.118.072701

M3 - Article

SN - 0031-9007

VL - 118

JO - Physical Review Letters

JF - Physical Review Letters

IS - 7

M1 - 072701

ER -

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

Abstract

Access to Document

Other files and links

Fingerprint

Cite this