Shell evolution of N = 40 isotones towards 60Ca: First spectroscopy of 62Ti

M. L. Cortés; W. Rodriguez; P. Doornenbal; A. Obertelli; J. D. Holt; S. M. Lenzi; J. Menéndez; F. Nowacki; K. Ogata; A. Poves; T. R. Rodríguez; A. Schwenk; J. Simonis; S. R. Stroberg; K. Yoshida; L. Achouri; H. Baba; F. Browne; D. Calvet; F. Château; S. Chen; N. Chiga; A. Corsi; A. Delbart; J. M. Gheller; A. Giganon; A. Gillibert; C. Hilaire; T. Isobe; T. Kobayashi; Y. Kubota; V. Lapoux; H. N. Liu; T. Motobayashi; I. Murray; H. Otsu; V. Panin; N. Paul; H. Sakurai; M. Sasano; D. Steppenbeck; L. Stuhl; Y. L. Sun; Y. Togano; T. Uesaka; K. Wimmer; K. Yoneda; O. Aktas; T. Aumann; L. X. Chung; F. Flavigny; S. Franchoo; I. Gašparić; R. B. Gerst; J. Gibelin; K. I. Hahn; D. Kim; T. Koiwai; Y. Kondo; P. Koseoglou; J. Lee; C. Lehr; B. D. Linh; T. Lokotko; M. MacCormick; K. Moschner; T. Nakamura; S. Y. Park; D. Rossi; E. Sahin; D. Sohler; P. A. Söderström; S. Takeuchi; H. Toernqvist; V. Vaquero; V. Wagner; S. Wang; V. Werner; X. Xu; H. Yamada; D. Yan; Z. Yang; M. Yasuda; L. Zanetti

doi:10.1016/j.physletb.2019.135071

Shell evolution of N = 40 isotones towards ⁶⁰Ca: First spectroscopy of ⁶²Ti

M. L. Cortés
, W. Rodriguez
, P. Doornenbal
, A. Obertelli
, J. D. Holt
, S. M. Lenzi
, J. Menéndez
, F. Nowacki
, K. Ogata
, A. Poves
, T. R. Rodríguez
, A. Schwenk
, J. Simonis
, S. R. Stroberg
, K. Yoshida
, L. Achouri
, H. Baba
, F. Browne
, D. Calvet
, F. Château

S. Chen, N. Chiga, A. Corsi, A. Delbart, J. M. Gheller, A. Giganon, A. Gillibert, C. Hilaire, T. Isobe, T. Kobayashi, Y. Kubota, V. Lapoux, H. N. Liu, T. Motobayashi, I. Murray, H. Otsu, V. Panin, N. Paul, H. Sakurai, M. Sasano, D. Steppenbeck, L. Stuhl, Y. L. Sun, Y. Togano, T. Uesaka, K. Wimmer, K. Yoneda, O. Aktas, T. Aumann, L. X. Chung, F. Flavigny, S. Franchoo, I. Gašparić, R. B. Gerst, J. Gibelin, K. I. Hahn, D. Kim, T. Koiwai, Y. Kondo, P. Koseoglou, J. Lee, C. Lehr, B. D. Linh, T. Lokotko, M. MacCormick, K. Moschner, T. Nakamura, S. Y. Park, D. Rossi, E. Sahin, D. Sohler, P. A. Söderström, S. Takeuchi, H. Toernqvist, V. Vaquero, V. Wagner, S. Wang, V. Werner, X. Xu, H. Yamada, D. Yan, Z. Yang, M. Yasuda, L. Zanetti

RIKEN Nishina Center
Laboratori Nazionali di Legnaro
Universidad Nacional de Colombia
APHP – Paris Saclay University
Technische Universität Darmstadt
TRIUMF
The University of Tokyo
University of Strasbourg Institute for Advanced Study (USIAS)
The University of Osaka
Osaka Prefecture University
Universidad Autónoma de Madrid
GSI Helmholtz Centre for Heavy Ion Research
Max Planck Institute for Nuclear Physics
Johannes Gutenberg University Mainz
University of Washington
Japan Atomic Energy Agency
Université de Caen
Peking University
Tohoku University
KTH Royal Institute of Technology
Rikkyo University
Vietnam Atomic Energy Institute
Ruder Boskovic Institute
Universität zu Köln
Ewha Womans University
Institute of Science Tokyo
The University of Hong Kong
University of Oslo
MTA Atomki
CSIC - Instituto de Estructura de la Materia (IEM)
CAS - Institute of Modern Physics

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

43 Scopus citations

Abstract

Excited states in the N=40 isotone ⁶²Ti were populated via the ⁶³V(p,2p)⁶²Ti reaction at ∼200 MeV/nucleon at the Radioactive Isotope Beam Factory and studied using γ-ray spectroscopy. The energies of the 2₁ ⁺→0_gs ⁺ and 4₁ ⁺→2₁ ⁺ transitions, observed here for the first time, indicate a deformed ⁶²Ti ground state. These energies are increased compared to the neighboring ⁶⁴Cr and ⁶⁶Fe isotones, suggesting a small decrease of quadrupole collectivity. The present measurement is well reproduced by large-scale shell-model calculations based on effective interactions, while ab initio and beyond mean-field calculations do not yet reproduce our findings. The shell-model calculations for ⁶²Ti show a dominant configuration with four neutrons excited across the N=40 gap. Likewise, they indicate that the N=40 island of inversion extends down to Z=20, disfavoring a possible doubly magic character of the elusive ⁶⁰Ca.

Original language	English
Article number	135071
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	800
DOIs	https://doi.org/10.1016/j.physletb.2019.135071
State	Published - 10 Jan 2020
Externally published	Yes

Keywords

Gamma-ray spectroscopy
Radioactive beams
Shell evolution

Access to Document

10.1016/j.physletb.2019.135071

Cite this

Cortés, M. L., Rodriguez, W., Doornenbal, P., Obertelli, A., Holt, J. D., Lenzi, S. M., Menéndez, J., Nowacki, F., Ogata, K., Poves, A., Rodríguez, T. R., Schwenk, A., Simonis, J., Stroberg, S. R., Yoshida, K., Achouri, L., Baba, H., Browne, F., Calvet, D., ... Zanetti, L. (2020). Shell evolution of N = 40 isotones towards ⁶⁰Ca: First spectroscopy of ⁶²Ti. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 800, Article 135071. https://doi.org/10.1016/j.physletb.2019.135071

@article{c54a92f4cd37448a9c18728759f67a43,

title = "Shell evolution of N = 40 isotones towards 60Ca: First spectroscopy of 62Ti",

abstract = "Excited states in the N=40 isotone 62Ti were populated via the 63V(p,2p)62Ti reaction at ∼200 MeV/nucleon at the Radioactive Isotope Beam Factory and studied using γ-ray spectroscopy. The energies of the 21 +→0gs + and 41 +→21 + transitions, observed here for the first time, indicate a deformed 62Ti ground state. These energies are increased compared to the neighboring 64Cr and 66Fe isotones, suggesting a small decrease of quadrupole collectivity. The present measurement is well reproduced by large-scale shell-model calculations based on effective interactions, while ab initio and beyond mean-field calculations do not yet reproduce our findings. The shell-model calculations for 62Ti show a dominant configuration with four neutrons excited across the N=40 gap. Likewise, they indicate that the N=40 island of inversion extends down to Z=20, disfavoring a possible doubly magic character of the elusive 60Ca.",

keywords = "Gamma-ray spectroscopy, Radioactive beams, Shell evolution",

author = "Cort{\'e}s, \{M. L.\} and W. Rodriguez and P. Doornenbal and A. Obertelli and Holt, \{J. D.\} and Lenzi, \{S. M.\} and J. Men{\'e}ndez and F. Nowacki and K. Ogata and A. Poves and Rodr{\'i}guez, \{T. R.\} and A. Schwenk and J. Simonis and Stroberg, \{S. R.\} and K. Yoshida and L. Achouri and H. Baba and F. Browne and D. Calvet and F. Ch{\^a}teau and S. Chen and N. Chiga and A. Corsi and A. Delbart and Gheller, \{J. M.\} and A. Giganon and A. Gillibert and C. Hilaire and T. Isobe and T. Kobayashi and Y. Kubota and V. Lapoux and Liu, \{H. N.\} and T. Motobayashi and I. Murray and H. Otsu and V. Panin and N. Paul and H. Sakurai and M. Sasano and D. Steppenbeck and L. Stuhl and Sun, \{Y. L.\} and Y. Togano and T. Uesaka and K. Wimmer and K. Yoneda and O. Aktas and T. Aumann and Chung, \{L. X.\} and F. Flavigny and S. Franchoo and I. Ga{\v s}pari{\'c} and Gerst, \{R. B.\} and J. Gibelin and Hahn, \{K. I.\} and D. Kim and T. Koiwai and Y. Kondo and P. Koseoglou and J. Lee and C. Lehr and Linh, \{B. D.\} and T. Lokotko and M. MacCormick and K. Moschner and T. Nakamura and Park, \{S. Y.\} and D. Rossi and E. Sahin and D. Sohler and S{\"o}derstr{\"o}m, \{P. A.\} and S. Takeuchi and H. Toernqvist and V. Vaquero and V. Wagner and S. Wang and V. Werner and X. Xu and H. Yamada and D. Yan and Z. Yang and M. Yasuda and L. Zanetti",

note = "Publisher Copyright: {\textcopyright} 2019 The Authors",

year = "2020",

month = jan,

day = "10",

doi = "10.1016/j.physletb.2019.135071",

language = "English",

volume = "800",

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

issn = "0370-2693",

publisher = "Elsevier B.V.",

}

Cortés, ML, Rodriguez, W, Doornenbal, P, Obertelli, A, Holt, JD, Lenzi, SM, Menéndez, J, Nowacki, F, Ogata, K, Poves, A, Rodríguez, TR, Schwenk, A, Simonis, J, Stroberg, SR, Yoshida, K, Achouri, L, Baba, H, Browne, F, Calvet, D, Château, F, Chen, S, Chiga, N, Corsi, A, Delbart, A, Gheller, JM, Giganon, A, Gillibert, A, Hilaire, C, Isobe, T, Kobayashi, T, Kubota, Y, Lapoux, V, Liu, HN, Motobayashi, T, Murray, I, Otsu, H, Panin, V, Paul, N, Sakurai, H, Sasano, M, Steppenbeck, D, Stuhl, L, Sun, YL, Togano, Y, Uesaka, T, Wimmer, K, Yoneda, K, Aktas, O, Aumann, T, Chung, LX, Flavigny, F, Franchoo, S, Gašparić, I, Gerst, RB, Gibelin, J, Hahn, KI, Kim, D, Koiwai, T, Kondo, Y, Koseoglou, P, Lee, J, Lehr, C, Linh, BD, Lokotko, T, MacCormick, M, Moschner, K, Nakamura, T, Park, SY, Rossi, D, Sahin, E, Sohler, D, Söderström, PA, Takeuchi, S, Toernqvist, H, Vaquero, V, Wagner, V, Wang, S, Werner, V, Xu, X, Yamada, H, Yan, D, Yang, Z, Yasuda, M & Zanetti, L 2020, 'Shell evolution of N = 40 isotones towards ⁶⁰Ca: First spectroscopy of ⁶²Ti', Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 800, 135071. https://doi.org/10.1016/j.physletb.2019.135071

TY - JOUR

T1 - Shell evolution of N = 40 isotones towards 60Ca

T2 - First spectroscopy of 62Ti

AU - Cortés, M. L.

AU - Rodriguez, W.

AU - Doornenbal, P.

AU - Obertelli, A.

AU - Holt, J. D.

AU - Lenzi, S. M.

AU - Menéndez, J.

AU - Nowacki, F.

AU - Ogata, K.

AU - Poves, A.

AU - Rodríguez, T. R.

AU - Schwenk, A.

AU - Simonis, J.

AU - Stroberg, S. R.

AU - Yoshida, K.

AU - Achouri, L.

AU - Baba, H.

AU - Browne, F.

AU - Calvet, D.

AU - Château, F.

AU - Chen, S.

AU - Chiga, N.

AU - Corsi, A.

AU - Delbart, A.

AU - Gheller, J. M.

AU - Giganon, A.

AU - Gillibert, A.

AU - Hilaire, C.

AU - Isobe, T.

AU - Kobayashi, T.

AU - Kubota, Y.

AU - Lapoux, V.

AU - Liu, H. N.

AU - Motobayashi, T.

AU - Murray, I.

AU - Otsu, H.

AU - Panin, V.

AU - Paul, N.

AU - Sakurai, H.

AU - Sasano, M.

AU - Steppenbeck, D.

AU - Stuhl, L.

AU - Sun, Y. L.

AU - Togano, Y.

AU - Uesaka, T.

AU - Wimmer, K.

AU - Yoneda, K.

AU - Aktas, O.

AU - Aumann, T.

AU - Chung, L. X.

AU - Flavigny, F.

AU - Franchoo, S.

AU - Gašparić, I.

AU - Gerst, R. B.

AU - Gibelin, J.

AU - Hahn, K. I.

AU - Kim, D.

AU - Koiwai, T.

AU - Kondo, Y.

AU - Koseoglou, P.

AU - Lee, J.

AU - Lehr, C.

AU - Linh, B. D.

AU - Lokotko, T.

AU - MacCormick, M.

AU - Moschner, K.

AU - Nakamura, T.

AU - Park, S. Y.

AU - Rossi, D.

AU - Sahin, E.

AU - Sohler, D.

AU - Söderström, P. A.

AU - Takeuchi, S.

AU - Toernqvist, H.

AU - Vaquero, V.

AU - Wagner, V.

AU - Wang, S.

AU - Werner, V.

AU - Xu, X.

AU - Yamada, H.

AU - Yan, D.

AU - Yang, Z.

AU - Yasuda, M.

AU - Zanetti, L.

PY - 2020/1/10

Y1 - 2020/1/10

N2 - Excited states in the N=40 isotone 62Ti were populated via the 63V(p,2p)62Ti reaction at ∼200 MeV/nucleon at the Radioactive Isotope Beam Factory and studied using γ-ray spectroscopy. The energies of the 21 +→0gs + and 41 +→21 + transitions, observed here for the first time, indicate a deformed 62Ti ground state. These energies are increased compared to the neighboring 64Cr and 66Fe isotones, suggesting a small decrease of quadrupole collectivity. The present measurement is well reproduced by large-scale shell-model calculations based on effective interactions, while ab initio and beyond mean-field calculations do not yet reproduce our findings. The shell-model calculations for 62Ti show a dominant configuration with four neutrons excited across the N=40 gap. Likewise, they indicate that the N=40 island of inversion extends down to Z=20, disfavoring a possible doubly magic character of the elusive 60Ca.

AB - Excited states in the N=40 isotone 62Ti were populated via the 63V(p,2p)62Ti reaction at ∼200 MeV/nucleon at the Radioactive Isotope Beam Factory and studied using γ-ray spectroscopy. The energies of the 21 +→0gs + and 41 +→21 + transitions, observed here for the first time, indicate a deformed 62Ti ground state. These energies are increased compared to the neighboring 64Cr and 66Fe isotones, suggesting a small decrease of quadrupole collectivity. The present measurement is well reproduced by large-scale shell-model calculations based on effective interactions, while ab initio and beyond mean-field calculations do not yet reproduce our findings. The shell-model calculations for 62Ti show a dominant configuration with four neutrons excited across the N=40 gap. Likewise, they indicate that the N=40 island of inversion extends down to Z=20, disfavoring a possible doubly magic character of the elusive 60Ca.

KW - Gamma-ray spectroscopy

KW - Radioactive beams

KW - Shell evolution

UR - https://www.scopus.com/pages/publications/85074726928

U2 - 10.1016/j.physletb.2019.135071

DO - 10.1016/j.physletb.2019.135071

M3 - Article

AN - SCOPUS:85074726928

SN - 0370-2693

VL - 800

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 - 135071

ER -

Shell evolution of N = 40 isotones towards ⁶⁰Ca: First spectroscopy of ⁶²Ti

Abstract

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Shell evolution of N = 40 isotones towards 60Ca: First spectroscopy of 62Ti

Abstract

Keywords

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Cite this

Shell evolution of N = 40 isotones towards ⁶⁰Ca: First spectroscopy of ⁶²Ti