Abstract

Strong $L=2$ transitions to the removal type of quadrupole-pairing vibrational states with $Q=\ensuremath{-}(8\ensuremath{-}10)$ MeV, observed in ($p,t$) reactions on all stable Nd isotopes with 52-MeV protons, are shown to be well accounted for by one-step distorted-wave Born-approximation calculations. Compared with these, the transitions to the $2_{1}^{}{}_{}{}^{+}$ (addition type of quadrupole pairing) states of $N>~82$ isotopes, which are found to be much weaker and have quite different angular distributions, are shown to be reasonably accounted for in terms of two step coupled-channel Born-approximation calculations.

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