Excitation energies of superdeformed states in 196Pb: towards a systematic study of the second well in Pb isotopes

Wilson, Anna; Singh, A; Hubel, H; Davidson, Paul Murray; Gorgen, A; Rossbach, D; Korichi, Amel; Astier, A; Azaiez, F; Bazzacco, D; Bourgeois, C; Buforn, N; Byrne, Aidan; Dracoulis, George; Hannachi, F; Hauschild, K; Korten, W; Kroll, T; Lane, Gregory; Lopez-Martens, A; Redon, N; Reiter, P; Rossi-Alvarez, C; Schönwasser, G; Stezowski, O; Thirolf, P

Excitation energies of superdeformed states in 196Pb: towards a systematic study of the second well in Pb isotopes

Date

2005-10-25

Authors

Wilson, Anna

Singh, A

Hubel, H

Davidson, Paul Murray

Gorgen, A

Rossbach, D

Korichi, Amel

Astier, A

Azaiez, F

Bazzacco, D

Publisher

American Physical Society

Abstract

The excitation energy of the lowest-energy superdeformed band in 196Pb is established using the techniques of time-correlated γ-ray spectroscopy. Together with previous measurements on 192Pb and 194Pb, this result allows superdeformed excitation energies, binding energies, and two-proton and two-neutron separation energies to be studied systematically, providing stringent tests for current nuclear models. The results are examined for evidence of a “superdeformed shell gap.”