Lifetime measurements in 165W and the spin evolution of E2 transition strength

T. Milanović; B. Cederwall; M. Doncel; I. Zanon; H. Li; U. Jakobsson; K. Auranen; S. Bönig; M. C. Drummond; T. Grahn; P. T. Greenlees; A. Herzáň; D. T. Joss; R. Julin; S. Juutinen; J. Konki; T. Kröll; M. Leino; C. McPeake; D. O'Donnell; R. D. Page; J. Pakarinen; J. Partanen; P. Peura; P. Rahkila; P. Ruotsalainen; M. Sandzelius; J. Sarén; B. Saygi; C. Scholey; J. Sorri; S. Stolze; M. J. Taylor; A. Thornthwaite; J. Uusitalo

doi:10.1103/2dtq-q465

Lifetime measurements in ¹⁶⁵W and the spin evolution of E2 transition strength

T. Milanović^*
, B. Cederwall
, M. Doncel
, I. Zanon
, H. Li
, U. Jakobsson
, K. Auranen
, S. Bönig
, M. C. Drummond
, T. Grahn
, P. T. Greenlees
, A. Herzáň
, D. T. Joss
, R. Julin
, S. Juutinen
, J. Konki
, T. Kröll
, M. Leino
, C. McPeake
, D. O'Donnell

R. D. Page, J. Pakarinen, J. Partanen, P. Peura, P. Rahkila, P. Ruotsalainen, M. Sandzelius, J. Sarén, B. Saygi, C. Scholey, J. Sorri, S. Stolze, M. J. Taylor, A. Thornthwaite, J. Uusitalo

^*Corresponding author for this work

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

Abstract

Lifetimes of low-lying states in the yrast νi_13/2 band in ¹⁶⁵W have been measured using the recoil distance Doppler-shift (RDDS) method. The excited states of interest were populated in the ⁹²Mo(⁷⁸Kr, 4p1n) ¹⁶⁵W fusion-evaporation reaction and their decays were investigated via γ rays detected in the Jurogam II detector array in coincidence with nuclei separated and detected using the RITU gas-filled separator. From the experimental lifetimes, corresponding reduced transition strengths, B(E2) values, were deduced and an unusually low experimental value of the ratio B(E2;21/2⁺→17/2⁺) / B(E2;17/2⁺→13/2⁺) = 0.59 (7) was extracted, similar to what has been observed in neighboring nuclei in this mass region. The experimental results have been compared with Woods-Saxon-type mean field and interacting boson-approximation (IBM-1) calculations.

Original language	English
Article number	024307
Number of pages	7
Journal	Physical Review C
Volume	113
Issue number	2
DOIs	https://doi.org/10.1103/2dtq-q465
Publication status	Published - 5 Feb 2026
Externally published	Yes

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2025 11 13 Milanovic et a Lifetime finalFinal published version, 897 KBLicence: CC BY 4.0

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Milanović, T., Cederwall, B., Doncel, M., Zanon, I., Li, H., Jakobsson, U., Auranen, K., Bönig, S., Drummond, M. C., Grahn, T., Greenlees, P. T., Herzáň, A., Joss, D. T., Julin, R., Juutinen, S., Konki, J., Kröll, T., Leino, M., McPeake, C., ... Uusitalo, J. (2026). Lifetime measurements in ¹⁶⁵W and the spin evolution of E2 transition strength. Physical Review C, 113(2), Article 024307. https://doi.org/10.1103/2dtq-q465

@article{145012acccb64ead8f06b90702a1b7e2,

title = "Lifetime measurements in 165W and the spin evolution of E2 transition strength",

abstract = "Lifetimes of low-lying states in the yrast νi13/2 band in 165W have been measured using the recoil distance Doppler-shift (RDDS) method. The excited states of interest were populated in the 92Mo(78Kr, 4p1n) 165W fusion-evaporation reaction and their decays were investigated via γ rays detected in the Jurogam II detector array in coincidence with nuclei separated and detected using the RITU gas-filled separator. From the experimental lifetimes, corresponding reduced transition strengths, B(E2) values, were deduced and an unusually low experimental value of the ratio B(E2;21/2+→17/2+) / B(E2;17/2+→13/2+) = 0.59 (7) was extracted, similar to what has been observed in neighboring nuclei in this mass region. The experimental results have been compared with Woods-Saxon-type mean field and interacting boson-approximation (IBM-1) calculations.",

author = "T. Milanovi{\'c} and B. Cederwall and M. Doncel and I. Zanon and H. Li and U. Jakobsson and K. Auranen and S. B{\"o}nig and Drummond, \{M. C.\} and T. Grahn and Greenlees, \{P. T.\} and A. Herz{\'a}{\v n} and Joss, \{D. T.\} and R. Julin and S. Juutinen and J. Konki and T. Kr{\"o}ll and M. Leino and C. McPeake and D. O'Donnell and Page, \{R. D.\} and J. Pakarinen and J. Partanen and P. Peura and P. Rahkila and P. Ruotsalainen and M. Sandzelius and J. Sar{\'e}n and B. Saygi and C. Scholey and J. Sorri and S. Stolze and Taylor, \{M. J.\} and A. Thornthwaite and J. Uusitalo",

year = "2026",

month = feb,

day = "5",

doi = "10.1103/2dtq-q465",

language = "English",

volume = "113",

journal = "Physical Review C",

issn = "2469-9985",

publisher = "American Physical Society",

number = "2",

}

Milanović, T, Cederwall, B, Doncel, M, Zanon, I, Li, H, Jakobsson, U, Auranen, K, Bönig, S, Drummond, MC, Grahn, T, Greenlees, PT, Herzáň, A, Joss, DT, Julin, R, Juutinen, S, Konki, J, Kröll, T, Leino, M, McPeake, C, O'Donnell, D, Page, RD, Pakarinen, J, Partanen, J, Peura, P, Rahkila, P, Ruotsalainen, P, Sandzelius, M, Sarén, J, Saygi, B, Scholey, C, Sorri, J, Stolze, S, Taylor, MJ, Thornthwaite, A & Uusitalo, J 2026, 'Lifetime measurements in ¹⁶⁵W and the spin evolution of E2 transition strength', Physical Review C, vol. 113, no. 2, 024307. https://doi.org/10.1103/2dtq-q465

TY - JOUR

T1 - Lifetime measurements in 165W and the spin evolution of E2 transition strength

AU - Milanović, T.

AU - Cederwall, B.

AU - Doncel, M.

AU - Zanon, I.

AU - Li, H.

AU - Jakobsson, U.

AU - Auranen, K.

AU - Bönig, S.

AU - Drummond, M. C.

AU - Grahn, T.

AU - Greenlees, P. T.

AU - Herzáň, A.

AU - Joss, D. T.

AU - Julin, R.

AU - Juutinen, S.

AU - Konki, J.

AU - Kröll, T.

AU - Leino, M.

AU - McPeake, C.

AU - O'Donnell, D.

AU - Page, R. D.

AU - Pakarinen, J.

AU - Partanen, J.

AU - Peura, P.

AU - Rahkila, P.

AU - Ruotsalainen, P.

AU - Sandzelius, M.

AU - Sarén, J.

AU - Saygi, B.

AU - Scholey, C.

AU - Sorri, J.

AU - Stolze, S.

AU - Taylor, M. J.

AU - Thornthwaite, A.

AU - Uusitalo, J.

PY - 2026/2/5

Y1 - 2026/2/5

N2 - Lifetimes of low-lying states in the yrast νi13/2 band in 165W have been measured using the recoil distance Doppler-shift (RDDS) method. The excited states of interest were populated in the 92Mo(78Kr, 4p1n) 165W fusion-evaporation reaction and their decays were investigated via γ rays detected in the Jurogam II detector array in coincidence with nuclei separated and detected using the RITU gas-filled separator. From the experimental lifetimes, corresponding reduced transition strengths, B(E2) values, were deduced and an unusually low experimental value of the ratio B(E2;21/2+→17/2+) / B(E2;17/2+→13/2+) = 0.59 (7) was extracted, similar to what has been observed in neighboring nuclei in this mass region. The experimental results have been compared with Woods-Saxon-type mean field and interacting boson-approximation (IBM-1) calculations.

AB - Lifetimes of low-lying states in the yrast νi13/2 band in 165W have been measured using the recoil distance Doppler-shift (RDDS) method. The excited states of interest were populated in the 92Mo(78Kr, 4p1n) 165W fusion-evaporation reaction and their decays were investigated via γ rays detected in the Jurogam II detector array in coincidence with nuclei separated and detected using the RITU gas-filled separator. From the experimental lifetimes, corresponding reduced transition strengths, B(E2) values, were deduced and an unusually low experimental value of the ratio B(E2;21/2+→17/2+) / B(E2;17/2+→13/2+) = 0.59 (7) was extracted, similar to what has been observed in neighboring nuclei in this mass region. The experimental results have been compared with Woods-Saxon-type mean field and interacting boson-approximation (IBM-1) calculations.

U2 - 10.1103/2dtq-q465

DO - 10.1103/2dtq-q465

M3 - Article

SN - 2469-9985

VL - 113

JO - Physical Review C

JF - Physical Review C

IS - 2

M1 - 024307

ER -

Lifetime measurements in 165W and the spin evolution of E2 transition strength

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Lifetime measurements in ¹⁶⁵W and the spin evolution of E2 transition strength