DECAYS OF ODD-ODD N-Z=2 NUCLEI ABOVE SN-100 - THE OBSERVATION OF PROTON RADIOACTIVITY FROM CS-112

The discovery of the new proton emitter 112Cs with an energy of 807 +/- 7 keV and a half-life of 500 +/- 100 mus is reported. WKB half-life calculations indicate d5/2 proton emission with a low spectroscopic factor comparable to values for 109I and 113Cs. This behavior is consistent with the onset of deformation in this region. The odd-odd nuclides 112Cs and 108I have significantly lower Q(p) values than the corresponding isotopes lying closer to stability, which is attributed to strong pairing forces between the odd nucleons. The half-life of 113Cs has been measured with improved precision as 17 +/- 2 us.