Abstract
A distorted-wave impulse-approximation analysis of 180-MeV ${\ensuremath{\pi}}^{\ifmmode\pm\else\textpm\fi{}}$ inelastic-scattering data to the ${2}_{1}^{+}$ and ${3}_{1}^{\ensuremath{-}}$ states in $^{42,44,48}\mathrm{Ca}$ is used to extract the neutron and proton (alternatively, isovector and isoscalar) multipole matrix elements for exciting these states. Model-dependent errors are examined by comparing results of calculations using collective-model form factors with those using form factors fitted to electron inelastic-scattering data.[NUCLEAR REACTIONS $^{42,44,48}\mathrm{Ca}({\ensuremath{\pi}}^{\ifmmode\pm\else\textpm\fi{}},{\ensuremath{\pi}}^{\ifmmode\pm\else\textpm\fi{}})$; measured $\ensuremath{\sigma}(\ensuremath{\theta})$; DWIA analysis; deduced neutron and proton multipole matrix elements.]
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