Shape coexistence in 66Se

Z. Elekes; V. Panin; T. R. Rodríguez; K. Sieja; D. S. Ahn; A. Al-Adili; H. Baba; A. I. Stefanescu; K. J. Cook; Cs Dósa; N. Fukuda; J. Gao; J. Gibelin; K. I. Hahn; Z. Halász; S. W. Huang; T. Isobe; M. M. Juhász; D. Kim; T. Kobayashi; Y. Kondo; Z. Korkulu; A. Kurihara; I. Kuti; H. Miki; K. Miki; T. Motobayashi; H. Otsu; A. Saastamoinen; M. Sasano; H. Sato; T. Shimada; Y. Shimizu; L. G. Sobotka; I. Stefanescu; L. Stuhl; H. Suzuki; H. Takeda; Y. Togano; T. Tomai; L. Trache; D. Tudor; T. Uesaka; Y. Utsuki; H. Wang; A. Yasuda; K. Yoneda; Y. Yoshitome

doi:10.1016/j.physletb.2023.138072

Shape coexistence in ⁶⁶Se

Z. Elekes
, V. Panin
, T. R. Rodríguez
, K. Sieja
, D. S. Ahn
, A. Al-Adili
, H. Baba
, A. I. Stefanescu
, K. J. Cook
, Cs Dósa
, N. Fukuda
, J. Gao
, J. Gibelin
, K. I. Hahn
, Z. Halász
, S. W. Huang
, T. Isobe
, M. M. Juhász
, D. Kim
, T. Kobayashi

Y. Kondo, Z. Korkulu, A. Kurihara, I. Kuti, H. Miki, K. Miki, T. Motobayashi, H. Otsu, A. Saastamoinen, M. Sasano, H. Sato, T. Shimada, Y. Shimizu, L. G. Sobotka, I. Stefanescu, L. Stuhl, H. Suzuki, H. Takeda, Y. Togano, T. Tomai, L. Trache, D. Tudor, T. Uesaka, Y. Utsuki, H. Wang, A. Yasuda, K. Yoneda, Y. Yoshitome

Department of Chemistry

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

6 Scopus citations

Abstract

The nuclear structure of ⁶⁶Se, nucleus beyond the N=Z line on the proton-rich side of the valley of stability, was investigated by the neutron knock-out reaction ⁶⁷Se(¹²C,X)⁶⁶Se using a ¹²C target. The analysis of the singles spectrum of the γ-rays emitted during the de-excitation of the populated low-lying excited states revealed two previously detected (927(4) keV, 1460(32) keV) and three new (744(6) keV, 1210(17) keV, 1661(23) keV) transitions. The 744-keV, the 1210-keV, and the 1460-keV transitions were found to be in coincidence with the one at 927 keV. The spectrum coincident with the 927-keV transition showed a further possible transition at 299(35) keV, which was obscured by significant atomic background in the singles spectrum. This transition might correspond to a peak previously reported at 273(5) keV that could not be assigned to ⁶⁶Se unambiguously. Based on a comparison of the experimental data to theoretical calculations, four new excited states are proposed which suggest that ⁶⁶Se exhibits shape coexistence.

Original language	English
Article number	138072
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	844
DOIs	https://doi.org/10.1016/j.physletb.2023.138072
State	Published - Sep 10 2023

Keywords

Neutron knock-out reaction
Nuclear structure
Shape coexistence
γ-ray spectroscopy

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10.1016/j.physletb.2023.138072

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Elekes, Z., Panin, V., Rodríguez, T. R., Sieja, K., Ahn, D. S., Al-Adili, A., Baba, H., Stefanescu, A. I., Cook, K. J., Dósa, C., Fukuda, N., Gao, J., Gibelin, J., Hahn, K. I., Halász, Z., Huang, S. W., Isobe, T., Juhász, M. M., Kim, D., ... Yoshitome, Y. (2023). Shape coexistence in ⁶⁶Se. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 844, Article 138072. https://doi.org/10.1016/j.physletb.2023.138072

@article{1cbddc4056054b7690b7b2f956c7407c,

title = "Shape coexistence in 66Se",

abstract = "The nuclear structure of 66Se, nucleus beyond the N=Z line on the proton-rich side of the valley of stability, was investigated by the neutron knock-out reaction 67Se(12C,X)66Se using a 12C target. The analysis of the singles spectrum of the γ-rays emitted during the de-excitation of the populated low-lying excited states revealed two previously detected (927(4) keV, 1460(32) keV) and three new (744(6) keV, 1210(17) keV, 1661(23) keV) transitions. The 744-keV, the 1210-keV, and the 1460-keV transitions were found to be in coincidence with the one at 927 keV. The spectrum coincident with the 927-keV transition showed a further possible transition at 299(35) keV, which was obscured by significant atomic background in the singles spectrum. This transition might correspond to a peak previously reported at 273(5) keV that could not be assigned to 66Se unambiguously. Based on a comparison of the experimental data to theoretical calculations, four new excited states are proposed which suggest that 66Se exhibits shape coexistence.",

keywords = "Neutron knock-out reaction, Nuclear structure, Shape coexistence, γ-ray spectroscopy",

author = "Z. Elekes and V. Panin and Rodr{\'i}guez, \{T. R.\} and K. Sieja and Ahn, \{D. S.\} and A. Al-Adili and H. Baba and Stefanescu, \{A. I.\} and Cook, \{K. J.\} and Cs D{\'o}sa and N. Fukuda and J. Gao and J. Gibelin and Hahn, \{K. I.\} and Z. Hal{\'a}sz and Huang, \{S. W.\} and T. Isobe and Juh{\'a}sz, \{M. M.\} and D. Kim and T. Kobayashi and Y. Kondo and Z. Korkulu and A. Kurihara and I. Kuti and H. Miki and K. Miki and T. Motobayashi and H. Otsu and A. Saastamoinen and M. Sasano and H. Sato and T. Shimada and Y. Shimizu and Sobotka, \{L. G.\} and I. Stefanescu and L. Stuhl and H. Suzuki and H. Takeda and Y. Togano and T. Tomai and L. Trache and D. Tudor and T. Uesaka and Y. Utsuki and H. Wang and A. Yasuda and K. Yoneda and Y. Yoshitome",

note = "Publisher Copyright: {\textcopyright} 2023 The Author(s)",

year = "2023",

month = sep,

day = "10",

doi = "10.1016/j.physletb.2023.138072",

language = "English",

volume = "844",

journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",

issn = "0370-2693",

}

Elekes, Z, Panin, V, Rodríguez, TR, Sieja, K, Ahn, DS, Al-Adili, A, Baba, H, Stefanescu, AI, Cook, KJ, Dósa, C, Fukuda, N, Gao, J, Gibelin, J, Hahn, KI, Halász, Z, Huang, SW, Isobe, T, Juhász, MM, Kim, D, Kobayashi, T, Kondo, Y, Korkulu, Z, Kurihara, A, Kuti, I, Miki, H, Miki, K, Motobayashi, T, Otsu, H, Saastamoinen, A, Sasano, M, Sato, H, Shimada, T, Shimizu, Y, Sobotka, LG, Stefanescu, I, Stuhl, L, Suzuki, H, Takeda, H, Togano, Y, Tomai, T, Trache, L, Tudor, D, Uesaka, T, Utsuki, Y, Wang, H, Yasuda, A, Yoneda, K & Yoshitome, Y 2023, 'Shape coexistence in ⁶⁶Se', Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 844, 138072. https://doi.org/10.1016/j.physletb.2023.138072

TY - JOUR

T1 - Shape coexistence in 66Se

AU - Elekes, Z.

AU - Panin, V.

AU - Rodríguez, T. R.

AU - Sieja, K.

AU - Ahn, D. S.

AU - Al-Adili, A.

AU - Baba, H.

AU - Stefanescu, A. I.

AU - Cook, K. J.

AU - Dósa, Cs

AU - Fukuda, N.

AU - Gao, J.

AU - Gibelin, J.

AU - Hahn, K. I.

AU - Halász, Z.

AU - Huang, S. W.

AU - Isobe, T.

AU - Juhász, M. M.

AU - Kim, D.

AU - Kobayashi, T.

AU - Kondo, Y.

AU - Korkulu, Z.

AU - Kurihara, A.

AU - Kuti, I.

AU - Miki, H.

AU - Miki, K.

AU - Motobayashi, T.

AU - Otsu, H.

AU - Saastamoinen, A.

AU - Sasano, M.

AU - Sato, H.

AU - Shimada, T.

AU - Shimizu, Y.

AU - Sobotka, L. G.

AU - Stefanescu, I.

AU - Stuhl, L.

AU - Suzuki, H.

AU - Takeda, H.

AU - Togano, Y.

AU - Tomai, T.

AU - Trache, L.

AU - Tudor, D.

AU - Uesaka, T.

AU - Utsuki, Y.

AU - Wang, H.

AU - Yasuda, A.

AU - Yoneda, K.

AU - Yoshitome, Y.

PY - 2023/9/10

Y1 - 2023/9/10

N2 - The nuclear structure of 66Se, nucleus beyond the N=Z line on the proton-rich side of the valley of stability, was investigated by the neutron knock-out reaction 67Se(12C,X)66Se using a 12C target. The analysis of the singles spectrum of the γ-rays emitted during the de-excitation of the populated low-lying excited states revealed two previously detected (927(4) keV, 1460(32) keV) and three new (744(6) keV, 1210(17) keV, 1661(23) keV) transitions. The 744-keV, the 1210-keV, and the 1460-keV transitions were found to be in coincidence with the one at 927 keV. The spectrum coincident with the 927-keV transition showed a further possible transition at 299(35) keV, which was obscured by significant atomic background in the singles spectrum. This transition might correspond to a peak previously reported at 273(5) keV that could not be assigned to 66Se unambiguously. Based on a comparison of the experimental data to theoretical calculations, four new excited states are proposed which suggest that 66Se exhibits shape coexistence.

AB - The nuclear structure of 66Se, nucleus beyond the N=Z line on the proton-rich side of the valley of stability, was investigated by the neutron knock-out reaction 67Se(12C,X)66Se using a 12C target. The analysis of the singles spectrum of the γ-rays emitted during the de-excitation of the populated low-lying excited states revealed two previously detected (927(4) keV, 1460(32) keV) and three new (744(6) keV, 1210(17) keV, 1661(23) keV) transitions. The 744-keV, the 1210-keV, and the 1460-keV transitions were found to be in coincidence with the one at 927 keV. The spectrum coincident with the 927-keV transition showed a further possible transition at 299(35) keV, which was obscured by significant atomic background in the singles spectrum. This transition might correspond to a peak previously reported at 273(5) keV that could not be assigned to 66Se unambiguously. Based on a comparison of the experimental data to theoretical calculations, four new excited states are proposed which suggest that 66Se exhibits shape coexistence.

KW - Neutron knock-out reaction

KW - Nuclear structure

KW - Shape coexistence

KW - γ-ray spectroscopy

UR - https://www.scopus.com/pages/publications/85165282479

U2 - 10.1016/j.physletb.2023.138072

DO - 10.1016/j.physletb.2023.138072

M3 - Article

AN - SCOPUS:85165282479

SN - 0370-2693

VL - 844

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

M1 - 138072

ER -

Shape coexistence in ⁶⁶Se

Abstract

Keywords

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