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Lifetime of the recently identified 10+ isomeric state at 3279 keV in the Nd136 nucleus

Tucholski, A., Droste, Ch., Srebrny, J., Petrache, C. M., Skalski, J., Jachimowicz, P., Fila, M., Abraham, T., Kisieliński, M., Kordyasz, A. , Kowalczyk, M., Kownacki, J., Marchlewski, T., Napiorkowski, P. J., Próchniak, L., Samorajczyk-Pyśk, J., Stolarz, A., Astier, A., Lv, B. F., Dupont, E., Lalkovski, S., Walker, P., Grodner, E. and Patyk, Z. (2019) Lifetime of the recently identified 10+ isomeric state at 3279 keV in the Nd136 nucleus Physical Review C, 100 (1), 014330.

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The γ softness of 136Nd makes it possible to study the shape changes induced by two-proton or two-neutron excitation.


We measure the lifetimes of two-quasiparticle states of the bands based on the 10+ states at 3296 and 3279 keV to investigate the shape change induced by the alignment of two protons or two neutrons in the h11/2 orbital.


The recoil-distance Doppler shift method was used for the study of 136Nd studies, which was formed by the fusion reaction 120Sn(20Ne, 4n)136Nd, at Ebeam = 85 MeV. Calculations were performed within the microscopic-macroscopic approach, based on the deformed Woods-Saxon single-particle potential and the Yukawa-plus-exponential macroscopic energy.


The lifetime of the 10+ state at 3279 keV of 136Nd was measured to be T 10+1/2 = 1.63(9) ns. The lifetimes of the 2+ state at 374 keV and of the 12+ state at 3686 keV of the ground band were also measured to be T 2+1/2 = 26.5(14) ps and T 12+1/2 = 22.5(14) ps.


The measured lifetime of 10+ the state at 3279 keV together with other observables confirm the structure change in 136Nd. A rather small reduced hindrance of the electromagnetic decay of the 10+ state at 3279 keV would be consistent with its K-mixed character.

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences > Physics
Authors :
Tucholski, A.
Droste, Ch.
Srebrny, J.
Petrache, C. M.
Skalski, J.
Jachimowicz, P.
Fila, M.
Abraham, T.
Kisieliński, M.
Kordyasz, A.
Kowalczyk, M.
Kownacki, J.
Marchlewski, T.
Napiorkowski, P. J.
Próchniak, L.
Samorajczyk-Pyśk, J.
Stolarz, A.
Astier, A.
Lv, B. F.
Dupont, E.
Lalkovski, S.
Grodner, E.
Patyk, Z.
Date : 31 July 2019
Funders : UK Science and Technology Facilities Council
DOI : 10.1103/PhysRevC.100.014330
Copyright Disclaimer : ©2019 American Physical Society
Depositing User : Diane Maxfield
Date Deposited : 12 Aug 2019 13:50
Last Modified : 13 Aug 2019 08:28

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