Observation of high-spin states in 153Er

In order to have a better understanding of the structure of these isotopes in the high spin region, the level structure of 153Er nucleus required to be reinvestigated. Because the study by Foin et al on 153Er nucleus does not have any intensity measurements and no definite spin-parity was assigned for the states above excitation energy 5.25 MeV. The present work started with the motivation to determine the spin-parity and intensity of the high spin part of the reported level scheme and extend the level scheme to the high excitation energy and also to search, if there is any, band like structure present in the higher excitation energy