Beta-delayed proton spectroscopy of

Recently an experiment has been carried out at RIKEN, Japan, using the projectile fragment separator RIPS to test a new approach of studying -delayed proton emitters. The approach consists of reduction of contamination from neighbouring isotones and isotopes by using a set of Al absorbers at the RIPS focal plane and stopping the fragments of interest on a thin foil placed in front of a gas -Si E detector telescope for delayed proton measurement. These two together have led to a remarkable reduction of -background in the delayed proton spectrum of and a number of new levels in decaying by proton emission to have been observed. The details of the technique and the results obtained from the -delayed proton decay of will be discussed.