Universität zu Köln

Kesteloot, N., Bastin, B., Gaffney, L. P., Wrzosek-Lipska, K., Auranen, K., Bauer, C., Bender, M., Bildstein, V., Blazhev, A., Boenig, S., Bree, N., Clement, E., Cocolios, T. E., Damyanova, A., Darby, I., De Witte, H., Di Julio, D., Diriken, J., Fransen, C., Garcia-Ramos, J. E., Gernhaeuser, R., Grahn, T., Heenen, P. -H., Hess, H., Heyde, K., Huyse, M., Iwanicki, J., Jakobsson, U., Konki, J., Kroell, T., Laurent, B., Lecesne, N., Lutter, R., Pakarinen, J., Peura, P., Piselli, E., Prochniak, L., Rahkila, P., Rapisarda, E., Reiter, P., Scheck, M., Seidlitz, M., Sferrazza, M., Siebeck, B., Sjodin, M., Tornqvist, H., Traykov, E., Van De Walle, J., Van Duppen, P., Vermeulen, M., Voulot, D., Warr, N., Wenander, F., Wimmer, K. and Zielinska, M. (2015). Deformation and mixing of coexisting shapes in neutron-deficient polonium isotopes. Phys. Rev. C, 92 (5). COLLEGE PK: AMER PHYSICAL SOC. ISSN 1089-490X

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Abstract

Coulomb-excitation experiments are performed with postaccelerated beams of neutron-deficient Po-196,Po-198,Po-200,Po-202 isotopes at the REX-ISOLDE facility. A set of matrix elements, coupling the low-lying states in these isotopes, is extracted. In the two heaviest isotopes, Po-196,Po-198, the transitional and diagonal matrix elements of the 2(1)(+) state are determined. In Po-196,Po-198 multistep Coulomb excitation is observed, populating the 4(1)(+), 0(2)(+), and 2(2)(+) states. The experimental results are compared to the results from the measurement of mean-square charge radii in polonium isotopes, confirming the onset of deformation from Po-196 onwards. Three model descriptions are used to compare to the data. Calculations with the beyond-mean-field model, the interacting boson model, and the general Bohr Hamiltonian model show partial agreement with the experimental data. Finally, calculations with a phenomenological two-level mixing model hint at the mixing of a spherical structure with a weakly deformed rotational structure.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Kesteloot, N. UNSPECIFIED UNSPECIFIED UNSPECIFIED Bastin, B. UNSPECIFIED UNSPECIFIED UNSPECIFIED Gaffney, L. P. UNSPECIFIED UNSPECIFIED UNSPECIFIED Wrzosek-Lipska, K. UNSPECIFIED UNSPECIFIED UNSPECIFIED Auranen, K. UNSPECIFIED UNSPECIFIED UNSPECIFIED Bauer, C. UNSPECIFIED UNSPECIFIED UNSPECIFIED Bender, M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Bildstein, V. UNSPECIFIED UNSPECIFIED UNSPECIFIED Blazhev, A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Boenig, S. UNSPECIFIED UNSPECIFIED UNSPECIFIED Bree, N. UNSPECIFIED UNSPECIFIED UNSPECIFIED Clement, E. UNSPECIFIED UNSPECIFIED UNSPECIFIED Cocolios, T. E. UNSPECIFIED UNSPECIFIED UNSPECIFIED Damyanova, A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Darby, I. UNSPECIFIED UNSPECIFIED UNSPECIFIED De Witte, H. UNSPECIFIED UNSPECIFIED UNSPECIFIED Di Julio, D. UNSPECIFIED UNSPECIFIED UNSPECIFIED Diriken, J. UNSPECIFIED UNSPECIFIED UNSPECIFIED Fransen, C. UNSPECIFIED UNSPECIFIED UNSPECIFIED Garcia-Ramos, J. E. UNSPECIFIED UNSPECIFIED UNSPECIFIED Gernhaeuser, R. UNSPECIFIED UNSPECIFIED UNSPECIFIED Grahn, T. UNSPECIFIED UNSPECIFIED UNSPECIFIED Heenen, P. -H. UNSPECIFIED UNSPECIFIED UNSPECIFIED Hess, H. UNSPECIFIED UNSPECIFIED UNSPECIFIED Heyde, K. UNSPECIFIED UNSPECIFIED UNSPECIFIED Huyse, M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Iwanicki, J. UNSPECIFIED UNSPECIFIED UNSPECIFIED Jakobsson, U. UNSPECIFIED UNSPECIFIED UNSPECIFIED Konki, J. UNSPECIFIED UNSPECIFIED UNSPECIFIED Kroell, T. UNSPECIFIED UNSPECIFIED UNSPECIFIED Laurent, B. UNSPECIFIED UNSPECIFIED UNSPECIFIED Lecesne, N. UNSPECIFIED UNSPECIFIED UNSPECIFIED Lutter, R. UNSPECIFIED UNSPECIFIED UNSPECIFIED Pakarinen, J. UNSPECIFIED UNSPECIFIED UNSPECIFIED Peura, P. UNSPECIFIED UNSPECIFIED UNSPECIFIED Piselli, E. UNSPECIFIED UNSPECIFIED UNSPECIFIED Prochniak, L. UNSPECIFIED UNSPECIFIED UNSPECIFIED Rahkila, P. UNSPECIFIED UNSPECIFIED UNSPECIFIED Rapisarda, E. UNSPECIFIED UNSPECIFIED UNSPECIFIED Reiter, P. UNSPECIFIED UNSPECIFIED UNSPECIFIED Scheck, M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Seidlitz, M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Sferrazza, M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Siebeck, B. UNSPECIFIED UNSPECIFIED UNSPECIFIED Sjodin, M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Tornqvist, H. UNSPECIFIED UNSPECIFIED UNSPECIFIED Traykov, E. UNSPECIFIED UNSPECIFIED UNSPECIFIED Van De Walle, J. UNSPECIFIED UNSPECIFIED UNSPECIFIED Van Duppen, P. UNSPECIFIED UNSPECIFIED UNSPECIFIED Vermeulen, M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Voulot, D. UNSPECIFIED UNSPECIFIED UNSPECIFIED Warr, N. UNSPECIFIED UNSPECIFIED UNSPECIFIED Wenander, F. UNSPECIFIED UNSPECIFIED UNSPECIFIED Wimmer, K. UNSPECIFIED UNSPECIFIED UNSPECIFIED Zielinska, M. UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-387239
DOI:	10.1103/PhysRevC.92.054301
Journal or Publication Title:	Phys. Rev. C
Volume:	92
Number:	5
Date:	2015
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 GAMMA-RAY SPECTROSCOPY; NUCLEAR-DATA SHEETS; EVEN-EVEN NUCLIDES; COULOMB-EXCITATION; PO ISOTOPES; TRANSITION-PROBABILITY; STATE PROPERTIES; INTRUDER STATES; CHARGE RADII; SPIN STATES Multiple languages Physics, Nuclear Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/38723