Shape isomersim and shape co-existence effects on the Coulomb energy differences in the N=Z nucleus 66As and neighbouring T=1 multiplets

G. de Angelis; K. T. Wiedemann; T. Martinez; R. Orlandi; A. Petrovici; E. Sahin; J. J. Valiente-Dobon; D. Tonev; S. Lunardi; B. S. Nara Singh; R. Wadsworth; A. Gadea; K. Kaneko; P. G. Bizzeti; A. M. Bizzeti-Sona; B. Blank; A. Bracco; M. P. Carpenter; C. J. Chiara; E. Farnea; A. Gottardo; J. P. Greene; S. M. Lenzi; S. Leoni; C. J. Lister; D. Mengoni; D. R. Napoli; O. L. Pechenaya; F. Recchia; W. Reviol; D. G. Sarantites; D. Seweryniak; C. A. Ur; S. Zhu

doi:10.1103/PhysRevC.85.034320

Shape isomersim and shape co-existence effects on the Coulomb energy differences in the N=Z nucleus ⁶⁶As and neighbouring T=1 multiplets

G. de Angelis^*, K. T. Wiedemann, T. Martinez, R. Orlandi, A. Petrovici, E. Sahin, J. J. Valiente-Dobon, D. Tonev, S. Lunardi, B. S. Nara Singh, R. Wadsworth, A. Gadea, K. Kaneko, P. G. Bizzeti, A. M. Bizzeti-Sona, B. Blank, A. Bracco, M. P. Carpenter, C. J. Chiara, E. FarneaA. Gottardo, J. P. Greene, S. M. Lenzi, S. Leoni, C. J. Lister, D. Mengoni, D. R. Napoli, O. L. Pechenaya, F. Recchia, W. Reviol, D. G. Sarantites, D. Seweryniak, C. A. Ur, S. Zhu

^*Corresponding author for this work

Physics

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

Abstract

Excited states of the N = Z = 33 nucleus As-66 have been populated in a fusion-evaporation reaction and studied using gamma-ray spectroscopic techniques. Special emphasis was put into the search for candidates for the T = 1 states. A new 3(+) isomer has been observed with a lifetime of 1.1(3) ns. This is believed to be the predicted oblate shape isomer. The excited levels are discussed in terms of the shell model and of the complex excited Vampir approaches. Coulomb energy differences are determined from the comparison of the T = 1 states with their analog partners. The unusual behavior of the Coulomb energy differences in the A = 70 mass region is explained through different shape components (oblate and prolate) within the members of the same isospin multiplets. This breaking of the isospin symmetry is attributed to the correlations induced by the Coulomb interaction.

Original language	English
Article number	ARTN 034320
Number of pages	7
Journal	Physical Review C
Volume	85
Issue number	3
DOIs	https://doi.org/10.1103/PhysRevC.85.034320
Publication status	Published - 20 Mar 2012

Keywords

STATES
MICROSCOPIC DESCRIPTION
GAMMASPHERE
SE-70

Access to Document

10.1103/PhysRevC.85.034320

Cite this

de Angelis, G., Wiedemann, K. T., Martinez, T., Orlandi, R., Petrovici, A., Sahin, E., Valiente-Dobon, J. J., Tonev, D., Lunardi, S., Singh, B. S. N., Wadsworth, R., Gadea, A., Kaneko, K., Bizzeti, P. G., Bizzeti-Sona, A. M., Blank, B., Bracco, A., Carpenter, M. P., Chiara, C. J., ... Zhu, S. (2012). Shape isomersim and shape co-existence effects on the Coulomb energy differences in the N=Z nucleus ⁶⁶As and neighbouring T=1 multiplets. Physical Review C, 85(3), Article ARTN 034320. https://doi.org/10.1103/PhysRevC.85.034320

@article{8831a644d96c4375b8c1e6e8635b1034,

title = "Shape isomersim and shape co-existence effects on the Coulomb energy differences in the N=Z nucleus 66As and neighbouring T=1 multiplets",

abstract = "Excited states of the N = Z = 33 nucleus As-66 have been populated in a fusion-evaporation reaction and studied using gamma-ray spectroscopic techniques. Special emphasis was put into the search for candidates for the T = 1 states. A new 3(+) isomer has been observed with a lifetime of 1.1(3) ns. This is believed to be the predicted oblate shape isomer. The excited levels are discussed in terms of the shell model and of the complex excited Vampir approaches. Coulomb energy differences are determined from the comparison of the T = 1 states with their analog partners. The unusual behavior of the Coulomb energy differences in the A = 70 mass region is explained through different shape components (oblate and prolate) within the members of the same isospin multiplets. This breaking of the isospin symmetry is attributed to the correlations induced by the Coulomb interaction.",

keywords = "STATES, MICROSCOPIC DESCRIPTION, GAMMASPHERE, SE-70",

author = "{de Angelis}, G. and Wiedemann, {K. T.} and T. Martinez and R. Orlandi and A. Petrovici and E. Sahin and Valiente-Dobon, {J. J.} and D. Tonev and S. Lunardi and Singh, {B. S. Nara} and R. Wadsworth and A. Gadea and K. Kaneko and Bizzeti, {P. G.} and Bizzeti-Sona, {A. M.} and B. Blank and A. Bracco and Carpenter, {M. P.} and Chiara, {C. J.} and E. Farnea and A. Gottardo and Greene, {J. P.} and Lenzi, {S. M.} and S. Leoni and Lister, {C. J.} and D. Mengoni and Napoli, {D. R.} and Pechenaya, {O. L.} and F. Recchia and W. Reviol and Sarantites, {D. G.} and D. Seweryniak and Ur, {C. A.} and S. Zhu",

year = "2012",

month = mar,

day = "20",

doi = "10.1103/PhysRevC.85.034320",

language = "English",

volume = "85",

journal = "Physical Review C",

issn = "2469-9985",

publisher = "American Physical Society",

number = "3",

}

de Angelis, G, Wiedemann, KT, Martinez, T, Orlandi, R, Petrovici, A, Sahin, E, Valiente-Dobon, JJ, Tonev, D, Lunardi, S, Singh, BSN, Wadsworth, R, Gadea, A, Kaneko, K, Bizzeti, PG, Bizzeti-Sona, AM, Blank, B, Bracco, A, Carpenter, MP, Chiara, CJ, Farnea, E, Gottardo, A, Greene, JP, Lenzi, SM, Leoni, S, Lister, CJ, Mengoni, D, Napoli, DR, Pechenaya, OL, Recchia, F, Reviol, W, Sarantites, DG, Seweryniak, D, Ur, CA & Zhu, S 2012, 'Shape isomersim and shape co-existence effects on the Coulomb energy differences in the N=Z nucleus ⁶⁶As and neighbouring T=1 multiplets', Physical Review C, vol. 85, no. 3, ARTN 034320. https://doi.org/10.1103/PhysRevC.85.034320

TY - JOUR

T1 - Shape isomersim and shape co-existence effects on the Coulomb energy differences in the N=Z nucleus 66As and neighbouring T=1 multiplets

AU - de Angelis, G.

AU - Wiedemann, K. T.

AU - Martinez, T.

AU - Orlandi, R.

AU - Petrovici, A.

AU - Sahin, E.

AU - Valiente-Dobon, J. J.

AU - Tonev, D.

AU - Lunardi, S.

AU - Singh, B. S. Nara

AU - Wadsworth, R.

AU - Gadea, A.

AU - Kaneko, K.

AU - Bizzeti, P. G.

AU - Bizzeti-Sona, A. M.

AU - Blank, B.

AU - Bracco, A.

AU - Carpenter, M. P.

AU - Chiara, C. J.

AU - Farnea, E.

AU - Gottardo, A.

AU - Greene, J. P.

AU - Lenzi, S. M.

AU - Leoni, S.

AU - Lister, C. J.

AU - Mengoni, D.

AU - Napoli, D. R.

AU - Pechenaya, O. L.

AU - Recchia, F.

AU - Reviol, W.

AU - Sarantites, D. G.

AU - Seweryniak, D.

AU - Ur, C. A.

AU - Zhu, S.

PY - 2012/3/20

Y1 - 2012/3/20

N2 - Excited states of the N = Z = 33 nucleus As-66 have been populated in a fusion-evaporation reaction and studied using gamma-ray spectroscopic techniques. Special emphasis was put into the search for candidates for the T = 1 states. A new 3(+) isomer has been observed with a lifetime of 1.1(3) ns. This is believed to be the predicted oblate shape isomer. The excited levels are discussed in terms of the shell model and of the complex excited Vampir approaches. Coulomb energy differences are determined from the comparison of the T = 1 states with their analog partners. The unusual behavior of the Coulomb energy differences in the A = 70 mass region is explained through different shape components (oblate and prolate) within the members of the same isospin multiplets. This breaking of the isospin symmetry is attributed to the correlations induced by the Coulomb interaction.

AB - Excited states of the N = Z = 33 nucleus As-66 have been populated in a fusion-evaporation reaction and studied using gamma-ray spectroscopic techniques. Special emphasis was put into the search for candidates for the T = 1 states. A new 3(+) isomer has been observed with a lifetime of 1.1(3) ns. This is believed to be the predicted oblate shape isomer. The excited levels are discussed in terms of the shell model and of the complex excited Vampir approaches. Coulomb energy differences are determined from the comparison of the T = 1 states with their analog partners. The unusual behavior of the Coulomb energy differences in the A = 70 mass region is explained through different shape components (oblate and prolate) within the members of the same isospin multiplets. This breaking of the isospin symmetry is attributed to the correlations induced by the Coulomb interaction.

KW - STATES

KW - MICROSCOPIC DESCRIPTION

KW - GAMMASPHERE

KW - SE-70

UR - http://www.scopus.com/inward/record.url?scp=84859134624&partnerID=8YFLogxK

U2 - 10.1103/PhysRevC.85.034320

DO - 10.1103/PhysRevC.85.034320

M3 - Article

AN - SCOPUS:84859134624

SN - 2469-9985

VL - 85

JO - Physical Review C

JF - Physical Review C

IS - 3

M1 - ARTN 034320