Comparative quadrupole moments of superdeformed bands in 193−196Pb

• Published in: Physics letters. B Vol. 434; no. 1; pp. 14 - 20
• Main Authors: van Severen, U.J., Clark, R.M., Krücken, R., Hübel, H., Asztalos, S.J., Becker, J.A., Busse, B.C., Deleplanque, M.A., Diamond, R.M., Fallon, P., Hauschild, K., Hibbert, I.M., Lee, I.Y., Macchiavelli, A.O., MacLeod, R.W., Schmid, G., Stephens, F.S., Vetter, K., Wadsworth, R., Wan, S.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01-08-1998
• Subjects: 23.20.Ck; 27.80.+w; 21.10.Re
• ISSN: 0370-2693; 1873-2445
• DOI: 10.1016/S0370-2693(98)00819-3

Lifetimes have been measured for states in five superdeformed yrast bands in
193−196Pb using the Gammasphere spectrometer array. Centroid shifts and lineshapes of transitions showing attenuated Doppler shifts have been analyzed. Transition quadrupole moments are deduced for the five bands including, for the first time, bands of two odd-A Pb isotopes. The quadrupole moments are found to be remarkably similar for the yrast bands in
194Pb (band 1),
195Pb (bands 1 and 2) and
196Pb (band 1) (Q
t
≈20 b). However, for
193Pb a smaller value, Q
t
=17.3(7) b, is obtained. This can be explained in terms of the occupation of the neutron N = 7 intruder orbitals.