Isomer-delayed gamma-ray spectroscopy of neutron-rich 166Tb

L. A. Gurgi; P. H. Regan; P. A. Söderström; H. Watanabe; P. M. Walker; Zs Podolyák; S. Nishimura; T. A. Berry; P. Doornenbal; G. Lorusso; T. Isobe; H. Baba; Z. Y. Xu; H. Sakurai; T. Sumikama; W. N. Catford; A. M. Bruce; F. Browne; G. J. Lane; F. G. Kondev; A. Odahara; J. Wu; H. L. Liu; F. R. Xu; Z. Korkulu; P. Lee; J. J. Liu; V. H. Phong; A. Yagi; G. X. Zhang; T. Alharbi; R. J. Carroll; K. Y. Chae; Zs Dombradi; A. Estrade; N. Fukuda; C. Griffin; E. Ideguchi; N. Inabe; H. Kanaoka; I. Kojouharov; T. Kubo; S. Kubono; N. Kurz; I. Kuti; S. Lalkovski; E. J. Lee; C. S. Lee; G. Lotay; C. B. Moon; I. Nishizuka; C. R. Nita; Z. Patel; O. J. Roberts; H. Schaffner; C. M. Shand; H. Suzuki; H. Takeda; S. Terashima; Zs Vajta; S. Kanaya; J. J. Valiente-Dobòn

doi:10.1051/epjconf/201714610009

Isomer-delayed gamma-ray spectroscopy of neutron-rich ¹⁶⁶Tb

L. A. Gurgi, P. H. Regan, P. A. Söderström, H. Watanabe, P. M. Walker, Zs Podolyák, S. Nishimura, T. A. Berry, P. Doornenbal, G. Lorusso, T. Isobe, H. Baba, Z. Y. Xu, H. Sakurai, T. Sumikama, W. N. Catford, A. M. Bruce, F. Browne, G. J. Lane, F. G. KondevA. Odahara, J. Wu, H. L. Liu, F. R. Xu, Z. Korkulu, P. Lee, J. J. Liu, V. H. Phong, A. Yagi, G. X. Zhang, T. Alharbi, R. J. Carroll, K. Y. Chae, Zs Dombradi, A. Estrade, N. Fukuda, C. Griffin, E. Ideguchi, N. Inabe, H. Kanaoka, I. Kojouharov, T. Kubo, S. Kubono, N. Kurz, I. Kuti, S. Lalkovski, E. J. Lee, C. S. Lee, G. Lotay, C. B. Moon, I. Nishizuka, C. R. Nita, Z. Patel, O. J. Roberts, H. Schaffner, C. M. Shand, H. Suzuki, H. Takeda, S. Terashima, Zs Vajta, S. Kanaya, J. J. Valiente-Dobòn

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

This short paper presents the identification of a metastable, isomeric-state decay in the neutron-rich odd-odd, prolate-deformed nucleus ¹⁶⁶Tb. The nucleus of interest was formed using the in-flight fission of a 345 MeV per nucleon ²³⁸U primary beam at the RIBF facility, RIKEN, Japan. Gamma-ray transitions decaying from the observed isomeric states in ¹⁶⁶Tb were identified using the EURICA gamma-ray spectrometer, positioned at the final focus of the BigRIPS fragments separator. The current work identifies a single discrete gamma-ray transition of energy 119 keV which de-excites an isomeric state in ¹⁶⁶Tb with a measured half-life of 3.5(4) μs. The multipolarity assignment for this transition is an electric dipole and is made on the basis internal conversion and decay lifetime arguments. Possible two quasi-particle Nilsson configurations for the initial and final states which are linked by this transition in ¹⁶⁶Tb are made on the basis of comparison with Blocked BCS Nilsson calculations, with the predicted ground state configuration for this nucleus arising from the coupling of the v(1^-/2)[521] and π(3⁺/2) Nilsson orbitals.

Original language	English
Title of host publication	ND 2016
Subtitle of host publication	International Conference on Nuclear Data for Science and Technology
Editors	Peter Siegler, Wim Mondelaers, Arjan Plompen, Franz-Josef Hambsch, Peter Schillebeeckx, Stefan Kopecky, Jan Heyse, Stephan Oberstedt
Publisher	EDP Sciences
ISBN (Electronic)	9782759890200
DOIs	https://doi.org/10.1051/epjconf/201714610009
Publication status	Published - 13 Sept 2017
Event	2016 International Conference on Nuclear Data for Science and Technology, ND 2016 - Bruges, Belgium Duration: 11 Sept 2016 → 16 Sept 2016

Publication series

Name	EPJ Web of Conferences
Volume	146
ISSN (Print)	2101-6275
ISSN (Electronic)	2100-014X

Conference

Conference	2016 International Conference on Nuclear Data for Science and Technology, ND 2016
Country/Territory	Belgium
City	Bruges
Period	11/09/16 → 16/09/16

Access to Document

10.1051/epjconf/201714610009

Cite this

Gurgi, L. A., Regan, P. H., Söderström, P. A., Watanabe, H., Walker, P. M., Podolyák, Z., Nishimura, S., Berry, T. A., Doornenbal, P., Lorusso, G., Isobe, T., Baba, H., Xu, Z. Y., Sakurai, H., Sumikama, T., Catford, W. N., Bruce, A. M., Browne, F., Lane, G. J., ... Valiente-Dobòn, J. J. (2017). Isomer-delayed gamma-ray spectroscopy of neutron-rich ¹⁶⁶Tb. In P. Siegler, W. Mondelaers, A. Plompen, F.-J. Hambsch, P. Schillebeeckx, S. Kopecky, J. Heyse, & S. Oberstedt (Eds.), ND 2016: International Conference on Nuclear Data for Science and Technology Article 10009 (EPJ Web of Conferences; Vol. 146). EDP Sciences. https://doi.org/10.1051/epjconf/201714610009

Gurgi, L. A. ; Regan, P. H. ; Söderström, P. A. et al. / Isomer-delayed gamma-ray spectroscopy of neutron-rich ¹⁶⁶Tb. ND 2016: International Conference on Nuclear Data for Science and Technology. editor / Peter Siegler ; Wim Mondelaers ; Arjan Plompen ; Franz-Josef Hambsch ; Peter Schillebeeckx ; Stefan Kopecky ; Jan Heyse ; Stephan Oberstedt. EDP Sciences, 2017. (EPJ Web of Conferences).

@inproceedings{311f9c0794b14ce6a8aa059916a15226,

title = "Isomer-delayed gamma-ray spectroscopy of neutron-rich 166Tb",

abstract = "This short paper presents the identification of a metastable, isomeric-state decay in the neutron-rich odd-odd, prolate-deformed nucleus 166Tb. The nucleus of interest was formed using the in-flight fission of a 345 MeV per nucleon 238U primary beam at the RIBF facility, RIKEN, Japan. Gamma-ray transitions decaying from the observed isomeric states in 166Tb were identified using the EURICA gamma-ray spectrometer, positioned at the final focus of the BigRIPS fragments separator. The current work identifies a single discrete gamma-ray transition of energy 119 keV which de-excites an isomeric state in 166Tb with a measured half-life of 3.5(4) μs. The multipolarity assignment for this transition is an electric dipole and is made on the basis internal conversion and decay lifetime arguments. Possible two quasi-particle Nilsson configurations for the initial and final states which are linked by this transition in 166Tb are made on the basis of comparison with Blocked BCS Nilsson calculations, with the predicted ground state configuration for this nucleus arising from the coupling of the v(1-/2)[521] and π(3+/2) Nilsson orbitals.",

author = "Gurgi, {L. A.} and Regan, {P. H.} and S{\"o}derstr{\"o}m, {P. A.} and H. Watanabe and Walker, {P. M.} and Zs Podoly{\'a}k and S. Nishimura and Berry, {T. A.} and P. Doornenbal and G. Lorusso and T. Isobe and H. Baba and Xu, {Z. Y.} and H. Sakurai and T. Sumikama and Catford, {W. N.} and Bruce, {A. M.} and F. Browne and Lane, {G. J.} and Kondev, {F. G.} and A. Odahara and J. Wu and Liu, {H. L.} and Xu, {F. R.} and Z. Korkulu and P. Lee and Liu, {J. J.} and Phong, {V. H.} and A. Yagi and Zhang, {G. X.} and T. Alharbi and Carroll, {R. J.} and Chae, {K. Y.} and Zs Dombradi and A. Estrade and N. Fukuda and C. Griffin and E. Ideguchi and N. Inabe and H. Kanaoka and I. Kojouharov and T. Kubo and S. Kubono and N. Kurz and I. Kuti and S. Lalkovski and Lee, {E. J.} and Lee, {C. S.} and G. Lotay and Moon, {C. B.} and I. Nishizuka and Nita, {C. R.} and Z. Patel and Roberts, {O. J.} and H. Schaffner and Shand, {C. M.} and H. Suzuki and H. Takeda and S. Terashima and Zs Vajta and S. Kanaya and Valiente-Dob{\`o}n, {J. J.}",

note = "Publisher Copyright: {\textcopyright} The Authors, published by EDP Sciences, 2017.; 2016 International Conference on Nuclear Data for Science and Technology, ND 2016 ; Conference date: 11-09-2016 Through 16-09-2016",

year = "2017",

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day = "13",

doi = "10.1051/epjconf/201714610009",

language = "English",

series = "EPJ Web of Conferences",

publisher = "EDP Sciences",

editor = "Peter Siegler and Wim Mondelaers and Arjan Plompen and Franz-Josef Hambsch and Peter Schillebeeckx and Stefan Kopecky and Jan Heyse and Stephan Oberstedt",

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Gurgi, LA, Regan, PH, Söderström, PA, Watanabe, H, Walker, PM, Podolyák, Z, Nishimura, S, Berry, TA, Doornenbal, P, Lorusso, G, Isobe, T, Baba, H, Xu, ZY, Sakurai, H, Sumikama, T, Catford, WN, Bruce, AM, Browne, F, Lane, GJ, Kondev, FG, Odahara, A, Wu, J, Liu, HL, Xu, FR, Korkulu, Z, Lee, P, Liu, JJ, Phong, VH, Yagi, A, Zhang, GX, Alharbi, T, Carroll, RJ, Chae, KY, Dombradi, Z, Estrade, A, Fukuda, N, Griffin, C, Ideguchi, E, Inabe, N, Kanaoka, H, Kojouharov, I, Kubo, T, Kubono, S, Kurz, N, Kuti, I, Lalkovski, S, Lee, EJ, Lee, CS, Lotay, G, Moon, CB, Nishizuka, I, Nita, CR, Patel, Z, Roberts, OJ, Schaffner, H, Shand, CM, Suzuki, H, Takeda, H, Terashima, S, Vajta, Z, Kanaya, S & Valiente-Dobòn, JJ 2017, Isomer-delayed gamma-ray spectroscopy of neutron-rich ¹⁶⁶Tb. in P Siegler, W Mondelaers, A Plompen, F-J Hambsch, P Schillebeeckx, S Kopecky, J Heyse & S Oberstedt (eds), ND 2016: International Conference on Nuclear Data for Science and Technology., 10009, EPJ Web of Conferences, vol. 146, EDP Sciences, 2016 International Conference on Nuclear Data for Science and Technology, ND 2016, Bruges, Belgium, 11/09/16. https://doi.org/10.1051/epjconf/201714610009

Isomer-delayed gamma-ray spectroscopy of neutron-rich ¹⁶⁶Tb. / Gurgi, L. A.; Regan, P. H.; Söderström, P. A. et al.
ND 2016: International Conference on Nuclear Data for Science and Technology. ed. / Peter Siegler; Wim Mondelaers; Arjan Plompen; Franz-Josef Hambsch; Peter Schillebeeckx; Stefan Kopecky; Jan Heyse; Stephan Oberstedt. EDP Sciences, 2017. 10009 (EPJ Web of Conferences; Vol. 146).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - Isomer-delayed gamma-ray spectroscopy of neutron-rich 166Tb

AU - Gurgi, L. A.

AU - Regan, P. H.

AU - Söderström, P. A.

AU - Watanabe, H.

AU - Walker, P. M.

AU - Podolyák, Zs

AU - Nishimura, S.

AU - Berry, T. A.

AU - Doornenbal, P.

AU - Lorusso, G.

AU - Isobe, T.

AU - Baba, H.

AU - Xu, Z. Y.

AU - Sakurai, H.

AU - Sumikama, T.

AU - Catford, W. N.

AU - Bruce, A. M.

AU - Browne, F.

AU - Lane, G. J.

AU - Kondev, F. G.

AU - Odahara, A.

AU - Wu, J.

AU - Liu, H. L.

AU - Xu, F. R.

AU - Korkulu, Z.

AU - Lee, P.

AU - Liu, J. J.

AU - Phong, V. H.

AU - Yagi, A.

AU - Zhang, G. X.

AU - Alharbi, T.

AU - Carroll, R. J.

AU - Chae, K. Y.

AU - Dombradi, Zs

AU - Estrade, A.

AU - Fukuda, N.

AU - Griffin, C.

AU - Ideguchi, E.

AU - Inabe, N.

AU - Kanaoka, H.

AU - Kojouharov, I.

AU - Kubo, T.

AU - Kubono, S.

AU - Kurz, N.

AU - Kuti, I.

AU - Lalkovski, S.

AU - Lee, E. J.

AU - Lee, C. S.

AU - Lotay, G.

AU - Moon, C. B.

AU - Nishizuka, I.

AU - Nita, C. R.

AU - Patel, Z.

AU - Roberts, O. J.

AU - Schaffner, H.

AU - Shand, C. M.

AU - Suzuki, H.

AU - Takeda, H.

AU - Terashima, S.

AU - Vajta, Zs

AU - Kanaya, S.

AU - Valiente-Dobòn, J. J.

PY - 2017/9/13

Y1 - 2017/9/13

N2 - This short paper presents the identification of a metastable, isomeric-state decay in the neutron-rich odd-odd, prolate-deformed nucleus 166Tb. The nucleus of interest was formed using the in-flight fission of a 345 MeV per nucleon 238U primary beam at the RIBF facility, RIKEN, Japan. Gamma-ray transitions decaying from the observed isomeric states in 166Tb were identified using the EURICA gamma-ray spectrometer, positioned at the final focus of the BigRIPS fragments separator. The current work identifies a single discrete gamma-ray transition of energy 119 keV which de-excites an isomeric state in 166Tb with a measured half-life of 3.5(4) μs. The multipolarity assignment for this transition is an electric dipole and is made on the basis internal conversion and decay lifetime arguments. Possible two quasi-particle Nilsson configurations for the initial and final states which are linked by this transition in 166Tb are made on the basis of comparison with Blocked BCS Nilsson calculations, with the predicted ground state configuration for this nucleus arising from the coupling of the v(1-/2)[521] and π(3+/2) Nilsson orbitals.

AB - This short paper presents the identification of a metastable, isomeric-state decay in the neutron-rich odd-odd, prolate-deformed nucleus 166Tb. The nucleus of interest was formed using the in-flight fission of a 345 MeV per nucleon 238U primary beam at the RIBF facility, RIKEN, Japan. Gamma-ray transitions decaying from the observed isomeric states in 166Tb were identified using the EURICA gamma-ray spectrometer, positioned at the final focus of the BigRIPS fragments separator. The current work identifies a single discrete gamma-ray transition of energy 119 keV which de-excites an isomeric state in 166Tb with a measured half-life of 3.5(4) μs. The multipolarity assignment for this transition is an electric dipole and is made on the basis internal conversion and decay lifetime arguments. Possible two quasi-particle Nilsson configurations for the initial and final states which are linked by this transition in 166Tb are made on the basis of comparison with Blocked BCS Nilsson calculations, with the predicted ground state configuration for this nucleus arising from the coupling of the v(1-/2)[521] and π(3+/2) Nilsson orbitals.

UR - http://www.scopus.com/inward/record.url?scp=85030472232&partnerID=8YFLogxK

U2 - 10.1051/epjconf/201714610009

DO - 10.1051/epjconf/201714610009

M3 - Conference contribution

T3 - EPJ Web of Conferences

BT - ND 2016

A2 - Siegler, Peter

A2 - Mondelaers, Wim

A2 - Plompen, Arjan

A2 - Hambsch, Franz-Josef

A2 - Schillebeeckx, Peter

A2 - Kopecky, Stefan

A2 - Heyse, Jan

A2 - Oberstedt, Stephan

PB - EDP Sciences

T2 - 2016 International Conference on Nuclear Data for Science and Technology, ND 2016

Y2 - 11 September 2016 through 16 September 2016

ER -

Gurgi LA, Regan PH, Söderström PA, Watanabe H, Walker PM, Podolyák Z et al. Isomer-delayed gamma-ray spectroscopy of neutron-rich ¹⁶⁶Tb. In Siegler P, Mondelaers W, Plompen A, Hambsch FJ, Schillebeeckx P, Kopecky S, Heyse J, Oberstedt S, editors, ND 2016: International Conference on Nuclear Data for Science and Technology. EDP Sciences. 2017. 10009. (EPJ Web of Conferences). doi: 10.1051/epjconf/201714610009