Arnswald, K., Blazhev, A., Nowacki, F., Petkov, P., Reiter, P., Braunroth, T., Dewald, A., Droste, M., Fransen, C., Hirsch, R., Karayonchev, V., Kaya, L., Lewandowski, L., Mueller-Gatermann, C., Seidlitz, M., Siebeck, B., Vogt, A., Werner, D. and Zell, K. O. (2021). Enhanced quadrupole collectivity in doubly-magic Ni-56: Lifetime measurements of the 4(1)(+) and 6(1)(+) states. Phys. Lett. B, 820. AMSTERDAM: ELSEVIER. ISSN 1873-2445

Full text not available from this repository.

Abstract

Lifetime measurements of excited states in doubly-magic Ni-56 have been performed exploiting the Doppler-shift attenuation method in order to determine reduced transition probabilities. For the 4(1)(+) and 6(1)(+) states, the deduced B(E2) values are compared with results from shell-model calculations employing the GXPF1A and the modern PFSDG-U interactions. In addition, valence ab-initio calculations were performed using a novel realistic Hamiltonian derived from chiral perturbation theory including three-body potential contributions and are confronted with the experimental findings. The new results show maximum E2 strength in comparison with known values along the N = 28 chain of isotones. The results corroborate the high collectivity for the double shell closure at N = Z = 28 which was anticipated from the large B(E2; 2(1)(+) -> 0(g.s.)(+)) value despite the considerable increase of its excitation energy as compared to neighboring semi-magic nuclei. Based on similarities in the shell structures of the self-conjugate doubly-magic nuclei Ni-56 and Sn-100, the new values could be an indication for an expected comparable collective behavior of the 6(1)(+) state in Sn-100. (C) 2021 The Author(s). Published by Elsevier B.V.

Item Type: Journal Article
Creators:
CreatorsEmailORCIDORCID Put Code
Arnswald, K.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Blazhev, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Nowacki, F.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Petkov, P.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Reiter, P.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Braunroth, T.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Dewald, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Droste, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Fransen, C.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Hirsch, R.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Karayonchev, V.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Kaya, L.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Lewandowski, L.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Mueller-Gatermann, C.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Seidlitz, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Siebeck, B.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Vogt, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Werner, D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Zell, K. O.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
URN: urn:nbn:de:hbz:38-593214
DOI: 10.1016/j.physletb.2021.136592
Journal or Publication Title: Phys. Lett. B
Volume: 820
Date: 2021
Publisher: ELSEVIER
Place of Publication: AMSTERDAM
ISSN: 1873-2445
Language: English
Faculty: Unspecified
Divisions: Unspecified
Subjects: no entry
Uncontrolled Keywords:
KeywordsLanguage
SHELL-MODEL DESCRIPTION; NUCLEIMultiple languages
Astronomy & Astrophysics; Physics, Nuclear; Physics, Particles & FieldsMultiple languages
URI: http://kups.ub.uni-koeln.de/id/eprint/59321

Downloads

Downloads per month over past year

Altmetric

Export

Actions (login required)

View Item View Item