Universität zu Köln

Nichols, A. J., Wadsworth, R., Iwasaki, H., Kaneko, K., Lemasson, A., de Angelis, G., Bader, V. M., Baugher, T., Bazin, D., Bentley, M. A., Berryman, J. S., Braunroth, T., Davies, P. J., Dewald, A., Fransen, C., Gade, A., Hackstein, M., Henderson, J., Jenkins, D. G., Miller, D., Morse, C., Paterson, I., Simpson, E. C., Stroberg, S. R., Weisshaar, D., Whitmore, K. and Wimmer, K. (2014). Collectivity in A similar to 70 nuclei studied via lifetime measurements in Br-70 and Se-68,Se-70. Phys. Lett. B, 733. S. 52 - 58. AMSTERDAM: ELSEVIER. ISSN 1873-2445

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Abstract

Transition strengths for decays from low-lying states in A similar to 70 nuclei have been deduced from lifetime measurements using the recoil distance Doppler shift technique. The results confirm the collectivity previously reported for the 2(1)(+) -> 0(gs)(+) decay in Se-68 and reveal a relative decrease in collectivity in Br-70. This trend is reproduced by shell model calculations using the GXPF1A interaction in an fp model space including the Coulomb, spin-orbit and isospin non-conserving interactions. The 3(1)(+) -> 2(1)(+) decay in Br-70 is found to have a very small B(M1) value, which is consistent with the configuration of the state being dominated by the coupling of f5/2 protons and neutrons. The results suggest that the g9/2 orbit does not play an important role at low spin in these nuclei. The B(E2) values for the decays of the (T = 1) 2(1)(+) states in Br-70 and Se-70 are almost identical, suggesting there is no major shape change between the two nuclei at low spin. (C) 2014 The Authors. Published by Elsevier B.V.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Nichols, A. J. UNSPECIFIED UNSPECIFIED UNSPECIFIED Wadsworth, R. UNSPECIFIED UNSPECIFIED UNSPECIFIED Iwasaki, H. UNSPECIFIED UNSPECIFIED UNSPECIFIED Kaneko, K. UNSPECIFIED UNSPECIFIED UNSPECIFIED Lemasson, A. UNSPECIFIED UNSPECIFIED UNSPECIFIED de Angelis, G. UNSPECIFIED UNSPECIFIED UNSPECIFIED Bader, V. M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Baugher, T. UNSPECIFIED UNSPECIFIED UNSPECIFIED Bazin, D. UNSPECIFIED UNSPECIFIED UNSPECIFIED Bentley, M. A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Berryman, J. S. UNSPECIFIED UNSPECIFIED UNSPECIFIED Braunroth, T. UNSPECIFIED UNSPECIFIED UNSPECIFIED Davies, P. J. UNSPECIFIED UNSPECIFIED UNSPECIFIED Dewald, A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Fransen, C. UNSPECIFIED UNSPECIFIED UNSPECIFIED Gade, A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Hackstein, M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Henderson, J. UNSPECIFIED UNSPECIFIED UNSPECIFIED Jenkins, D. G. UNSPECIFIED UNSPECIFIED UNSPECIFIED Miller, D. UNSPECIFIED UNSPECIFIED UNSPECIFIED Morse, C. UNSPECIFIED UNSPECIFIED UNSPECIFIED Paterson, I. UNSPECIFIED UNSPECIFIED UNSPECIFIED Simpson, E. C. UNSPECIFIED UNSPECIFIED UNSPECIFIED Stroberg, S. R. UNSPECIFIED UNSPECIFIED UNSPECIFIED Weisshaar, D. UNSPECIFIED UNSPECIFIED UNSPECIFIED Whitmore, K. UNSPECIFIED UNSPECIFIED UNSPECIFIED Wimmer, K. UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-436027
DOI:	10.1016/j.physletb.2014.04.016
Journal or Publication Title:	Phys. Lett. B
Volume:	733
Page Range:	S. 52 - 58
Date:	2014
Publisher:	ELSEVIER
Place of Publication:	AMSTERDAM
ISSN:	1873-2445
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language SHAPE COEXISTENCE Multiple languages Astronomy & Astrophysics; Physics, Nuclear; Physics, Particles & Fields Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/43602