Systematics of the (t, p) reaction in Yb and Hf isotopes near the N=108 "subshell closure"

Angular distributions of protons from the 170, 174, 176 Yb(t, p) 172, 176, 178 Yb and 178,180 Hf(t, p) 180, 182 Hf reactions have been studied using beams of 15 MeV tritons from the McMaster University tandem Van de Graaff accelerator. The reaction products were analyzed with a magnetic spectrograph and detected with photographic emulsions. Levels up to ~2.5 MeV excitation were studied in each nuclide, with a typical overall resolution of ~15 …