Improved measurement of the 02+ → 01+ E0 transition strength for 72Se using the SPICE spectrometer

J. Smallcombe; A. B. Garnsworthy; W. Korten; P. Singh; F. A. Ali; C. Andreoiu; S. Ansari; G. C. Ball; C. J. Barton; S. S. Bhattacharjee; M. Bowry; R. Caballero-Folch; A. Chester; S. A. Gillespie; G. F. Grinyer; G. Hackman; C. Jones; B. Melon; M. Moukaddam; A. Nannini; P. Ruotsalainen; K. Starosta; C. E. Svensson; R. Wadsworth; J. Williams

doi:10.1103/PhysRevC.106.014312

Improved measurement of the 0₂⁺ → 0₁⁺ E0 transition strength for ⁷²Se using the SPICE spectrometer

J. Smallcombe^*, A. B. Garnsworthy, W. Korten, P. Singh, F. A. Ali, C. Andreoiu, S. Ansari, G. C. Ball, C. J. Barton, S. S. Bhattacharjee, M. Bowry, R. Caballero-Folch, A. Chester, S. A. Gillespie, G. F. Grinyer, G. Hackman, C. Jones, B. Melon, M. Moukaddam, A. NanniniP. Ruotsalainen, K. Starosta, C. E. Svensson, R. Wadsworth, J. Williams

^*Corresponding author for this work

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Abstract

The selenium isotopes lie at the heart of a tumultuous region of the nuclear chart where shape coexistence effects grapple with neutron-proton pairing correlations, triaxiality, and the impending proton drip line. In this work, a study of ⁷²Se by internal conversion electron and γ-ray spectroscopy was undertaken with the SPICE and TIGRESS arrays. New measurements of the branching ratio and lifetime of the 0₂⁺ state were performed, yielding a determination of ρ² (E0;0₂⁺→0₁⁺)=29(3) milliunits. Two-state mixing calculations were performed that highlighted the importance of interpretation of such E0 strength values in the context of shape coexistence.

Original language	English
Article number	014312
Journal	Physical Review C
Volume	106
Issue number	1
DOIs	https://doi.org/10.1103/PhysRevC.106.014312
Publication status	Published - 19 Jul 2022
Externally published	Yes

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2022 07 12 Smallcombe et al Improved acceptedAccepted author manuscript, 480 KB

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Smallcombe, J., Garnsworthy, A. B., Korten, W., Singh, P., Ali, F. A., Andreoiu, C., Ansari, S., Ball, G. C., Barton, C. J., Bhattacharjee, S. S., Bowry, M., Caballero-Folch, R., Chester, A., Gillespie, S. A., Grinyer, G. F., Hackman, G., Jones, C., Melon, B., Moukaddam, M., ... Williams, J. (2022). Improved measurement of the 0₂⁺ → 0₁⁺ E0 transition strength for ⁷²Se using the SPICE spectrometer. Physical Review C, 106(1), Article 014312. https://doi.org/10.1103/PhysRevC.106.014312

@article{e753e8daa433454c995baf249075996a,

title = "Improved measurement of the 02+ → 01+ E0 transition strength for 72Se using the SPICE spectrometer",

abstract = "The selenium isotopes lie at the heart of a tumultuous region of the nuclear chart where shape coexistence effects grapple with neutron-proton pairing correlations, triaxiality, and the impending proton drip line. In this work, a study of 72Se by internal conversion electron and γ-ray spectroscopy was undertaken with the SPICE and TIGRESS arrays. New measurements of the branching ratio and lifetime of the 02+ state were performed, yielding a determination of ρ2 (E0;02+→01+)=29(3) milliunits. Two-state mixing calculations were performed that highlighted the importance of interpretation of such E0 strength values in the context of shape coexistence.",

author = "J. Smallcombe and Garnsworthy, {A. B.} and W. Korten and P. Singh and Ali, {F. A.} and C. Andreoiu and S. Ansari and Ball, {G. C.} and Barton, {C. J.} and Bhattacharjee, {S. S.} and M. Bowry and R. Caballero-Folch and A. Chester and Gillespie, {S. A.} and Grinyer, {G. F.} and G. Hackman and C. Jones and B. Melon and M. Moukaddam and A. Nannini and P. Ruotsalainen and K. Starosta and Svensson, {C. E.} and R. Wadsworth and J. Williams",

year = "2022",

month = jul,

day = "19",

doi = "10.1103/PhysRevC.106.014312",

language = "English",

volume = "106",

journal = "Physical Review C",

issn = "2469-9985",

publisher = "American Physical Society",

number = "1",

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Smallcombe, J, Garnsworthy, AB, Korten, W, Singh, P, Ali, FA, Andreoiu, C, Ansari, S, Ball, GC, Barton, CJ, Bhattacharjee, SS, Bowry, M, Caballero-Folch, R, Chester, A, Gillespie, SA, Grinyer, GF, Hackman, G, Jones, C, Melon, B, Moukaddam, M, Nannini, A, Ruotsalainen, P, Starosta, K, Svensson, CE, Wadsworth, R & Williams, J 2022, 'Improved measurement of the 0₂⁺ → 0₁⁺ E0 transition strength for ⁷²Se using the SPICE spectrometer', Physical Review C, vol. 106, no. 1, 014312. https://doi.org/10.1103/PhysRevC.106.014312

TY - JOUR

T1 - Improved measurement of the 02+ → 01+ E0 transition strength for 72Se using the SPICE spectrometer

AU - Smallcombe, J.

AU - Garnsworthy, A. B.

AU - Korten, W.

AU - Singh, P.

AU - Ali, F. A.

AU - Andreoiu, C.

AU - Ansari, S.

AU - Ball, G. C.

AU - Barton, C. J.

AU - Bhattacharjee, S. S.

AU - Bowry, M.

AU - Caballero-Folch, R.

AU - Chester, A.

AU - Gillespie, S. A.

AU - Grinyer, G. F.

AU - Hackman, G.

AU - Jones, C.

AU - Melon, B.

AU - Moukaddam, M.

AU - Nannini, A.

AU - Ruotsalainen, P.

AU - Starosta, K.

AU - Svensson, C. E.

AU - Wadsworth, R.

AU - Williams, J.

PY - 2022/7/19

Y1 - 2022/7/19

N2 - The selenium isotopes lie at the heart of a tumultuous region of the nuclear chart where shape coexistence effects grapple with neutron-proton pairing correlations, triaxiality, and the impending proton drip line. In this work, a study of 72Se by internal conversion electron and γ-ray spectroscopy was undertaken with the SPICE and TIGRESS arrays. New measurements of the branching ratio and lifetime of the 02+ state were performed, yielding a determination of ρ2 (E0;02+→01+)=29(3) milliunits. Two-state mixing calculations were performed that highlighted the importance of interpretation of such E0 strength values in the context of shape coexistence.

AB - The selenium isotopes lie at the heart of a tumultuous region of the nuclear chart where shape coexistence effects grapple with neutron-proton pairing correlations, triaxiality, and the impending proton drip line. In this work, a study of 72Se by internal conversion electron and γ-ray spectroscopy was undertaken with the SPICE and TIGRESS arrays. New measurements of the branching ratio and lifetime of the 02+ state were performed, yielding a determination of ρ2 (E0;02+→01+)=29(3) milliunits. Two-state mixing calculations were performed that highlighted the importance of interpretation of such E0 strength values in the context of shape coexistence.

U2 - 10.1103/PhysRevC.106.014312

DO - 10.1103/PhysRevC.106.014312

M3 - Article

SN - 2469-9985

VL - 106

JO - Physical Review C

JF - Physical Review C

IS - 1

M1 - 014312

ER -

Improved measurement of the 02+ → 01+ E0 transition strength for 72Se using the SPICE spectrometer

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Improved measurement of the 0₂⁺ → 0₁⁺ E0 transition strength for ⁷²Se using the SPICE spectrometer