Universität zu Köln

Hennig, A., Spieker, M., Werner, V., Ahn, T., Anagnostatou, V., Cooper, N., Derya, V., Elvers, M., Endres, J., Goddard, P., Heinz, A., Hughes, R. O., Ilie, G., Mineva, M. N., Petkov, P., Pickstone, S. G., Pietralla, N., Radeck, D., Ross, T. J., Savran, D. and Zilges, A. (2014). Mixed-symmetry octupole and hexadecapole excitations in the N=52 isotones. Phys. Rev. C, 90 (5). COLLEGE PK: AMER PHYSICAL SOC. ISSN 1089-490X

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Abstract

Background: Excitations with mixed proton-neutron symmetry have been previously observed in the N = 52 isotones. Besides the well-established quadrupole mixed-symmetry states (MSS), octupole and hexadecapole MSS have been recently proposed for the nuclei Zr-92 and Mo-94. Purpose: The heaviest stable N = 52 isotone Ru-96 was investigated to study the evolution of octupole and hexadecapole MSS with increasing proton number. Methods: Two inelastic proton-scattering experiments on 96Ru were performed to extract branching ratios, multipolemixing ratios, and level lifetimes. From the combined data, absolute transition strengths were calculated. Results: Strong M1 transitions between the lowest-lying 3-and 4(+) states were observed, providing evidence for a one-phonon mixed-symmetry character of the 3(2)((-)) and 4(2)(+) states. Conclusions: sdg-IBM-2 calculations were performed for 96Ru. The results are in excellent agreement with the experimental data, pointing out a one-phonon hexadecapole mixed-symmetry character of the 4+ 2 state. The < 3(1)(-) parallel to M1 parallel to 3(2)((-))> matrix element is found to scale with the < 2(s)(+) parallel to M1 parallel to 2(ms)(+)> matrix element.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Hennig, A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Spieker, M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Werner, V. UNSPECIFIED UNSPECIFIED UNSPECIFIED Ahn, T. UNSPECIFIED UNSPECIFIED UNSPECIFIED Anagnostatou, V. UNSPECIFIED UNSPECIFIED UNSPECIFIED Cooper, N. UNSPECIFIED UNSPECIFIED UNSPECIFIED Derya, V. UNSPECIFIED UNSPECIFIED UNSPECIFIED Elvers, M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Endres, J. UNSPECIFIED UNSPECIFIED UNSPECIFIED Goddard, P. UNSPECIFIED UNSPECIFIED UNSPECIFIED Heinz, A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Hughes, R. O. UNSPECIFIED UNSPECIFIED UNSPECIFIED Ilie, G. UNSPECIFIED UNSPECIFIED UNSPECIFIED Mineva, M. N. UNSPECIFIED UNSPECIFIED UNSPECIFIED Petkov, P. UNSPECIFIED UNSPECIFIED UNSPECIFIED Pickstone, S. G. UNSPECIFIED UNSPECIFIED UNSPECIFIED Pietralla, N. UNSPECIFIED UNSPECIFIED UNSPECIFIED Radeck, D. UNSPECIFIED UNSPECIFIED UNSPECIFIED Ross, T. J. UNSPECIFIED UNSPECIFIED UNSPECIFIED Savran, D. UNSPECIFIED UNSPECIFIED UNSPECIFIED Zilges, A. UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-423414
DOI:	10.1103/PhysRevC.90.051302
Journal or Publication Title:	Phys. Rev. C
Volume:	90
Number:	5
Date:	2014
Publisher:	AMER PHYSICAL SOC
Place of Publication:	COLLEGE PK
ISSN:	1089-490X
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language COLLECTIVE NUCLEAR-STATES; INTERACTING BOSON MODEL; DIPOLE EXCITATIONS; SHELL-MODEL; PROTON; MO-94; RATES Multiple languages Physics, Nuclear Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/42341