Kolos, K., Miller, D., Grzywacz, R., Iwasaki, H., Al-Shudifat, M., Bazin, D., Bingham, C. R., Braunroth, T., Cerizza, G., Gade, A., Lemasson, A., Liddick, S. N., Madurga, M., Morse, C., Portillo, M., Rajabali, M. M., Recchia, F., Riedinger, L. L., Voss, P., Walters, W. B., Weisshaar, D., Whitmore, K., Wimmer, K. and Tostevin, J. A. (2016). Direct Lifetime Measurements of the Excited States in Ni-72. Phys. Rev. Lett., 116 (12). COLLEGE PK: AMER PHYSICAL SOC. ISSN 1079-7114

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Abstract

The lifetimes of the first excited 2(+) and 4(+) states in Ni-72 were measured at the National Superconducting Cyclotron Laboratory with the recoil-distance Doppler-shift method, a model-independent probe to obtain the reduced transition probability. Excited states in Ni-72 were populated by the one-proton knockout reaction of an intermediate energy Cu-73 beam. gamma-ray-recoil coincidences were detected with the gamma-ray tracking array GRETINA and the S800 spectrograph. Our results provide evidence of enhanced transition probability B(E2; 2(+) -> 0(+)) as compared to Ni-68, but do not confirm the trend of large B(E2) values reported in the neighboring isotope Ni-70 obtained from Coulomb excitation measurement. The results are compared to shell model calculations. The lifetime obtained for the excited 4(1)(+) state is consistent with models showing decay of a seniority nu = 4, 4(+) state, which is consistent with the disappearance of the 8(+) isomer in Ni-72.

Item Type: Journal Article
Creators:
CreatorsEmailORCIDORCID Put Code
Kolos, K.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Miller, D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Grzywacz, R.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Iwasaki, H.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Al-Shudifat, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Bazin, D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Bingham, C. R.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Braunroth, T.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Cerizza, G.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Gade, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Lemasson, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Liddick, S. N.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Madurga, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Morse, C.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Portillo, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Rajabali, M. M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Recchia, F.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Riedinger, L. L.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Voss, P.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Walters, W. B.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Weisshaar, D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Whitmore, K.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Wimmer, K.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Tostevin, J. A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
URN: urn:nbn:de:hbz:38-281107
DOI: 10.1103/PhysRevLett.116.122502
Journal or Publication Title: Phys. Rev. Lett.
Volume: 116
Number: 12
Date: 2016
Publisher: AMER PHYSICAL SOC
Place of Publication: COLLEGE PK
ISSN: 1079-7114
Language: English
Faculty: Unspecified
Divisions: Unspecified
Subjects: no entry
Uncontrolled Keywords:
KeywordsLanguage
ISOMERS; NUCLEI; TOOLMultiple languages
Physics, MultidisciplinaryMultiple languages
Refereed: Yes
URI: http://kups.ub.uni-koeln.de/id/eprint/28110

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