Abstract
High-spin states in the dipole structure of have been investigated using the fusion-evaporation reaction at beam energy 148 MeV using the Indian National Gamma Array. The spin parity of the observed dipole bands I and II has been established firmly from the spectroscopic measurements. Level lifetimes of several levels in the dipole bands I and II have been measured using the Doppler shift attenuation method. The smooth decrease of the values with spin exhibits a clear signature of the magnetic rotational character of the dipole band I. Comparisons between the experimental characteristics and the semiclassical shears mechanism with the principal axis cranking model calculation show that the dipole band I may be interpreted as a magnetic rotational band.
4 More- Received 5 July 2016
- Revised 16 September 2016
DOI:https://doi.org/10.1103/PhysRevC.94.044318
©2016 American Physical Society