One neutron transfer reaction spectroscopy of ¹⁹⁵Pt as a detailed test of the U(6/12) supersymmetry

We investigated the nucleus ¹⁹⁵Pt via (p,d) and polarized (d⃗,t) one neutron pickup reactions. Rather complete spectra are obtained resulting in new spin assignments of 42 states in ¹⁹⁵Pt and in information 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 ¹⁹⁴Pt and the negative parity states of ¹⁹⁵Pt, reproduces these spectra. For the lower part of the spectrum also the transfer strengths, calculated with a semimicroscopic transfer operator, agree well with the experiment. The reproduction of the very rich data set improves and extends the evidence that the low-energy spectrum, which results from the coupling of the unpaired neutron in a few, specific orbits to the O(6) core, is determined in a rather complete way by supersymmetry.