Lifetime measurements of excited states in 163W and the implications for the anomalous B(E2) ratios in transitional nuclei

M.c. Lewis; D.t. Joss; B. Sayğı; R.d. Page; D.m. Cullen; L. Barber; M.m. Giles; J. Simpson; M.a.m. Al-aqeel; H. Badran; T. Braunroth; A.d. Briscoe; T. Calverley; A. Dewald; M. Doncel; T. Grahn; P.t. Greenlees; C. Henrich; A. Herzáň; R.-d. Herzberg; E. Higgins; J. Hilton; S. Ilieva; R. Julin; S. Juutinen; J. Keatings; T. Kröll; M. Labiche; K. Mashtakov; B.s. Nara Singh; E. Parr; J. Partanen; E.s. Paul; P. Rahkila; M. Sandzelius; J. Sarén; C. Scholey; M. Siciliano; P. Spagnoletti; S. Stolze; S.v. Szwec; M.j. Taylor; J. Uusitalo

doi:10.1016/j.physletb.2019.134998

Lifetime measurements of excited states in 163W and the implications for the anomalous B(E2) ratios in transitional nuclei

M.c. Lewis, D.t. Joss, B. Sayğı, R.d. Page, D.m. Cullen, L. Barber, M.m. Giles, J. Simpson, M.a.m. Al-aqeel, H. Badran, T. Braunroth, A.d. Briscoe, T. Calverley, A. Dewald, M. Doncel, T. Grahn, P.t. Greenlees, C. Henrich, A. Herzáň, R.-d. HerzbergE. Higgins, J. Hilton, S. Ilieva, R. Julin, S. Juutinen, J. Keatings, T. Kröll, M. Labiche, K. Mashtakov, B.s. Nara Singh, E. Parr, J. Partanen, E.s. Paul, P. Rahkila, M. Sandzelius, J. Sarén, C. Scholey, M. Siciliano, P. Spagnoletti, S. Stolze, S.v. Szwec, M.j. Taylor, J. Uusitalo

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

Abstract

This letter reports lifetime measurements of excited states in the odd-N nucleus 163W using the recoil-distance Doppler shift method to probe the core polarising effect of the neutron orbital on the underlying soft triaxial even-even core. The ratio B(E2:)/B(E2:) is consistent with the predictions of the collective rotational model. The deduced B(E2) values provide insights into the validity of collective model predictions for heavy transitional nuclei and a geometric origin for the anomalous B(E2) ratios observed in nearby even-even nuclei is proposed.

Original language	English
Pages (from-to)	134998
Journal	Physics Letters B
Early online date	7 Oct 2019
DOIs	https://doi.org/10.1016/j.physletb.2019.134998
Publication status	Published - 2019

Keywords

mean lifetimes
B(E2) reduced transition probabilities
Recoil-distance Doppler-shift method
Nuclear deformation
gamma-ray spectroscopy

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https://linkinghub.elsevier.com/retrieve/pii/S0370269319307208

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Lewis, M. C., Joss, D. T., Sayğı, B., Page, R. D., Cullen, D. M., Barber, L., Giles, M. M., Simpson, J., Al-aqeel, M. A. M., Badran, H., Braunroth, T., Briscoe, A. D., Calverley, T., Dewald, A., Doncel, M., Grahn, T., Greenlees, P. T., Henrich, C., Herzáň, A., ... Uusitalo, J. (2019). Lifetime measurements of excited states in 163W and the implications for the anomalous B(E2) ratios in transitional nuclei. Physics Letters B, 134998. https://doi.org/10.1016/j.physletb.2019.134998

@article{693e83183b96486bac8708cdcdd1f55a,

title = "Lifetime measurements of excited states in 163W and the implications for the anomalous B(E2) ratios in transitional nuclei",

abstract = "This letter reports lifetime measurements of excited states in the odd-N nucleus 163W using the recoil-distance Doppler shift method to probe the core polarising effect of the neutron orbital on the underlying soft triaxial even-even core. The ratio B(E2:)/B(E2:) is consistent with the predictions of the collective rotational model. The deduced B(E2) values provide insights into the validity of collective model predictions for heavy transitional nuclei and a geometric origin for the anomalous B(E2) ratios observed in nearby even-even nuclei is proposed.",

keywords = "mean lifetimes, B(E2) reduced transition probabilities, Recoil-distance Doppler-shift method, Nuclear deformation, gamma-ray spectroscopy",

author = "M.c. Lewis and D.t. Joss and B. Sayğı and R.d. Page and D.m. Cullen and L. Barber and M.m. Giles and J. Simpson and M.a.m. Al-aqeel and H. Badran and T. Braunroth and A.d. Briscoe and T. Calverley and A. Dewald and M. Doncel and T. Grahn and P.t. Greenlees and C. Henrich and A. Herz{\'a}{\v n} and R.-d. Herzberg and E. Higgins and J. Hilton and S. Ilieva and R. Julin and S. Juutinen and J. Keatings and T. Kr{\"o}ll and M. Labiche and K. Mashtakov and {Nara Singh}, B.s. and E. Parr and J. Partanen and E.s. Paul and P. Rahkila and M. Sandzelius and J. Sar{\'e}n and C. Scholey and M. Siciliano and P. Spagnoletti and S. Stolze and S.v. Szwec and M.j. Taylor and J. Uusitalo",

year = "2019",

doi = "10.1016/j.physletb.2019.134998",

language = "English",

pages = "134998",

journal = "Physics Letters B",

issn = "0370-2693",

publisher = "Elsevier BV",

}

Lewis, MC, Joss, DT, Sayğı, B, Page, RD, Cullen, DM, Barber, L, Giles, MM, Simpson, J, Al-aqeel, MAM, Badran, H, Braunroth, T, Briscoe, AD, Calverley, T, Dewald, A, Doncel, M, Grahn, T, Greenlees, PT, Henrich, C, Herzáň, A, Herzberg, R, Higgins, E, Hilton, J, Ilieva, S, Julin, R, Juutinen, S, Keatings, J, Kröll, T, Labiche, M, Mashtakov, K, Nara Singh, BS, Parr, E, Partanen, J, Paul, ES, Rahkila, P, Sandzelius, M, Sarén, J, Scholey, C, Siciliano, M, Spagnoletti, P, Stolze, S, Szwec, SV, Taylor, MJ & Uusitalo, J 2019, 'Lifetime measurements of excited states in 163W and the implications for the anomalous B(E2) ratios in transitional nuclei', Physics Letters B, pp. 134998. https://doi.org/10.1016/j.physletb.2019.134998

TY - JOUR

T1 - Lifetime measurements of excited states in 163W and the implications for the anomalous B(E2) ratios in transitional nuclei

AU - Lewis, M.c.

AU - Joss, D.t.

AU - Sayğı, B.

AU - Page, R.d.

AU - Cullen, D.m.

AU - Barber, L.

AU - Giles, M.m.

AU - Simpson, J.

AU - Al-aqeel, M.a.m.

AU - Badran, H.

AU - Braunroth, T.

AU - Briscoe, A.d.

AU - Calverley, T.

AU - Dewald, A.

AU - Doncel, M.

AU - Grahn, T.

AU - Greenlees, P.t.

AU - Henrich, C.

AU - Herzáň, A.

AU - Herzberg, R.-d.

AU - Higgins, E.

AU - Hilton, J.

AU - Ilieva, S.

AU - Julin, R.

AU - Juutinen, S.

AU - Keatings, J.

AU - Kröll, T.

AU - Labiche, M.

AU - Mashtakov, K.

AU - Nara Singh, B.s.

AU - Parr, E.

AU - Partanen, J.

AU - Paul, E.s.

AU - Rahkila, P.

AU - Sandzelius, M.

AU - Sarén, J.

AU - Scholey, C.

AU - Siciliano, M.

AU - Spagnoletti, P.

AU - Stolze, S.

AU - Szwec, S.v.

AU - Taylor, M.j.

AU - Uusitalo, J.

PY - 2019

Y1 - 2019

N2 - This letter reports lifetime measurements of excited states in the odd-N nucleus 163W using the recoil-distance Doppler shift method to probe the core polarising effect of the neutron orbital on the underlying soft triaxial even-even core. The ratio B(E2:)/B(E2:) is consistent with the predictions of the collective rotational model. The deduced B(E2) values provide insights into the validity of collective model predictions for heavy transitional nuclei and a geometric origin for the anomalous B(E2) ratios observed in nearby even-even nuclei is proposed.

AB - This letter reports lifetime measurements of excited states in the odd-N nucleus 163W using the recoil-distance Doppler shift method to probe the core polarising effect of the neutron orbital on the underlying soft triaxial even-even core. The ratio B(E2:)/B(E2:) is consistent with the predictions of the collective rotational model. The deduced B(E2) values provide insights into the validity of collective model predictions for heavy transitional nuclei and a geometric origin for the anomalous B(E2) ratios observed in nearby even-even nuclei is proposed.

KW - mean lifetimes

KW - B(E2) reduced transition probabilities

KW - Recoil-distance Doppler-shift method

KW - Nuclear deformation

KW - gamma-ray spectroscopy

U2 - 10.1016/j.physletb.2019.134998

DO - 10.1016/j.physletb.2019.134998

M3 - Article

SN - 0370-2693

SP - 134998

JO - Physics Letters B

JF - Physics Letters B

ER -

Lifetime measurements of excited states in 163W and the implications for the anomalous B(E2) ratios in transitional nuclei

Abstract

Keywords

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