One neutron transfer reaction spectroscopy of Pt-195 as a detailed test ofthe U(6/12) supersymmetry - art. no. 064313

We investigated the nucleus Pt-195 via (p,d) and polarized ((d)over right a rrow>,t) one neutron pickup reactions. Rather complete spectra are obtained resulting in new spin assignments of 42 states in Pt-195 and in informatio n about spectroscopic transfer strengths for each level up to an excitation energy of 1450 keV. A U(6/12) supersymmetric level scheme, describing with its five parameters the O(6) spectrum of Pt-194 and the negative parity st ates of Pt-195, reproduces these spectra. For the lower part of the spectru m also the transfer strengths, calculated with a semimicroscopic transfer o perator, agree well with the experiment. The reproduction of the very rich data set improves and extends the evidence that the low-energy spectrum, wh ich results from the coupling of the unpaired neutron in a few, specific or bits to the O(6) core, is determined in a rather complete way by supersymme try.