“…Simple analytical expressions can be obtained in the two models for the relative intensities of the L=0 transfers between the 0 § ground states of even-even nuclei [4,5]. Extensive experimental data are available on the (3He, n) two-proton transfer reaction in the A~100 region [6][7][8], and in particular on the cross sections at 0 ~ for the L=0 transfers between the ground states of the even-even Sr, Zr, Mo, Ru, Pd, Cd and Sn isotopes I- 6,7], and between the lowest 1/2-levels in the odd-Z Ag and In isotopes [8]. They were obtained at the same laboratory, using the same 3He energy (25.4MeV), and under the same experimental conditions.…”