1. Observation of negative-parity high-spin states of68As.
- Author
-
Stefanova, E.A., Lieb, K.P., Stefanescu, I., De Angelis, G., Curien, D., Eberth, J., Farnea, E., Gadea, A., Gersch, G., Jungclaus, A., Martinez, T., Schwengner, R., Steinhardt, T., Warr, N., Weisshaar, D., and Wyss, R.
- Subjects
- *
PARTICLES (Nuclear physics) , *ELECTROMAGNETIC waves , *GAMMA rays , *DETECTORS , *NUCLEAR physics , *CALCIUM - Abstract
The neutron-deficient nucleus68As was populated at high spin in two experiments using the reaction40Ca(32S, 3pn) at beam energies of 105 and 95 MeV. A self-supporting and a gold-backed, highly enriched40Ca target were used. Gamma rays were detected with the EUROBALL array, combined with the charged-particle detector array EUCLIDES and the Neutron Wall. The68As level scheme was considerably extended, especially at negative parity and many previous spin-parity assignments were confirmed or rejected. The total-Routhian-surface (TRS) calculations find shape coexistence and ? softness for the negative- and positive-parity states, respectively. [ABSTRACT FROM AUTHOR]
- Published
- 2005
- Full Text
- View/download PDF