New Measure of Nuclear Transition Strengths

Abstract

A simple procedure is presented for extracting a new model-insensitive, inelastic strength factor $A_L$ for Tassie-like nuclear excitations directly from the data. $A_L$, a measure of the coupling strength at large momentum transfer, is to be contrasted with the low-momentum-transfer $B\left(\mathrm{EL}\right)\mathrm{}$. $A_L$ is extracted for the $3^{-}$ (2.61) and $5^{-}$ (3.2) states in ${}_{}{}^{208}{}_{}{}^{}\mathrm{Pb}$ and the $2^{+}$ (1.3) state in ${}_{}{}^{60}{}_{}{}^{}\mathrm{Ni}$, showing that these excitations are Tassie-like and that for the $3^{-}$ state $A_L$ is projectile independent.