On the decrease in charge radii of multi-quasi particle isomers

Autor: Kieran Flanagan, Jussi Huikari, Mark Bissell, Ari Jokinen, Paul Campbell, Sami Rinta-Antila, G. Tungate, M. D Gardner, Iain Moore, Juha Äystö, J. Billowes, Heikki Penttilä, B. Tordoff, Tommi Eronen, A. Nieminen, D. H. Forest, Bradley Cheal, M Avgoulea
Rok vydání: 2007
Předmět:
Zdroj: Physics Letters B. 645:330-334
ISSN: 0370-2693
DOI: 10.1016/j.physletb.2006.12.054
Popis: We report changes in mean-square charge radii, δ 〈 r 2 〉 , magnetic moments and quadrupole moments for three multi-quasi particle isomers; 97m2Y, 176mYb and 178m1Hf. All the isomers are observed to display a decrease in 〈 r 2 〉 compared to the lower-lying nuclear state on which the isomer is built. The decreases in 〈 r 2 〉 occur despite the isomers showing increases in quadrupole moment. Possible mechanisms for the effect, which is now seen for six multi-quasi particle isomers, are discussed.
Databáze: OpenAIRE