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Deformation and mixing of coexisting shapes in neutron-deficient polonium isotopes

N Kesteloot, B Bastin, LP Gaffney, K Wrzosek-Lipska, K Auranen, C Bauer, M Bender, V Bildstein, A Blazhev, S Bönig, et al. (2015) PHYSICAL REVIEW C. 92(5).
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.
Please use this url to cite or link to this publication:
author
organization
year
type
journalArticle (original)
publication status
published
subject
keyword
CHARGE RADII, SPIN STATES, INTRUDER STATES, STATE PROPERTIES, TRANSITION-PROBABILITY, PO ISOTOPES, COULOMB-EXCITATION, EVEN-EVEN NUCLIDES, NUCLEAR-DATA SHEETS, GAMMA-RAY SPECTROSCOPY
journal title
PHYSICAL REVIEW C
Phys. Rev. C
volume
92
issue
5
article number
054301
pages
17 pages
Web of Science type
Article
Web of Science id
000364019000001
ISSN
0556-2813
DOI
10.1103/PhysRevC.92.054301
language
English
UGent publication?
yes
classification
A1
copyright statement
I have transferred the copyright for this publication to the publisher
id
6997713
handle
http://hdl.handle.net/1854/LU-6997713
date created
2015-12-01 11:52:43
date last changed
2016-12-21 15:42:42
@article{6997713,
  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.},
  articleno    = {054301},
  author       = {Kesteloot, N and Bastin, B and Gaffney, LP and Wrzosek-Lipska, K and Auranen, K and Bauer, C and Bender, M and Bildstein, V and Blazhev, A and B{\"o}nig, S and Bree, N and Cl{\'e}ment, E and Cocolios, TE and Damyanova, A and Darby, I and De Witte, H and Di Julio, D and Diriken, J and Fransen, C and Garc{\'i}a-Ramos, JE and Gernh{\"a}user, R and Grahn, T and Heenen, P-H and Hess, H and Heyde, Kristiaan and Huyse, M and Iwanicki, J and Jakobsson, U and Konki, J and Kr{\"o}ll, T and Laurent, B and Lecesne, N and Lutter, R and Pakarinen, J and Peura, P and Piselli, E and Pr{\'o}chniak, L and Rahkila, P and Rapisarda, E and Reiter, P and Scheck, M and Seidlitz, M and Sferrazza, M and Siebeck, B and Sjodin, M and Tornqvist, H and Traykov, E and Van De Walle, J and Van Duppen, P and Vermeulen, M and Voulot, D and Warr, N and Wenander, F and Wimmer, K and Zieli\'{n}ska, M},
  issn         = {0556-2813},
  journal      = {PHYSICAL REVIEW C},
  keyword      = {CHARGE RADII,SPIN STATES,INTRUDER STATES,STATE PROPERTIES,TRANSITION-PROBABILITY,PO ISOTOPES,COULOMB-EXCITATION,EVEN-EVEN NUCLIDES,NUCLEAR-DATA SHEETS,GAMMA-RAY SPECTROSCOPY},
  language     = {eng},
  number       = {5},
  pages        = {17},
  title        = {Deformation and mixing of coexisting shapes in neutron-deficient polonium isotopes},
  url          = {http://dx.doi.org/10.1103/PhysRevC.92.054301},
  volume       = {92},
  year         = {2015},
}

Chicago
Kesteloot, N, B Bastin, LP Gaffney, K Wrzosek-Lipska, K Auranen, C Bauer, M Bender, et al. 2015. “Deformation and Mixing of Coexisting Shapes in Neutron-deficient Polonium Isotopes.” Physical Review C 92 (5).
APA
Kesteloot, N., Bastin, B., Gaffney, L., Wrzosek-Lipska, K., Auranen, K., Bauer, C., Bender, M., et al. (2015). Deformation and mixing of coexisting shapes in neutron-deficient polonium isotopes. PHYSICAL REVIEW C, 92(5).
Vancouver
1.
Kesteloot N, Bastin B, Gaffney L, Wrzosek-Lipska K, Auranen K, Bauer C, et al. Deformation and mixing of coexisting shapes in neutron-deficient polonium isotopes. PHYSICAL REVIEW C. 2015;92(5).
MLA
Kesteloot, N, B Bastin, LP Gaffney, et al. “Deformation and Mixing of Coexisting Shapes in Neutron-deficient Polonium Isotopes.” PHYSICAL REVIEW C 92.5 (2015): n. pag. Print.