Quasielastic electron scattering from 40Ca
1997
Differential cross sections for quasielastic electron scattering on ${}^{40}$Ca have been measured at laboratory scattering angles of 45.5$\ifmmode^\circ\else\textdegree\fi{}$, 90$\ifmmode^\circ\else\textdegree\fi{}$, and 140$\ifmmode^\circ\else\textdegree\fi{}$ with bombarding energies ranging from 130 to 840 MeV. Transverse and longitudinal response functions have been extracted for momentum transfers from 300 to 500 MeV/$c$. Contrary to some previously reported results, the total observed longitudinal strength agrees with the relativistic Fermi gas prediction to within $\ifmmode\pm\else\textpm\fi{}$18%.
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