A. Gerard

Longitudinal and transverse responses in quasi-elastic electron scattering from 208Pb and 4He

Abstract Longitudinal and transverse response functions, R L and R T , have been obtained in inclusive quasi-elastic electron scattering from 4 He and 208 Pb, for momentum transfers between 300 and 650 MeV/ c and energy transfers up to 350 MeV. A quenching of R L , ∼ 14% in 4 He and ∼ 50% in 208 Pb has been observed. Interpretations in terms of correlations and modification of nucleon form factors in the nuclear medium are discussed.

A study of the electrodisintegration reaction 4He(e, e′ p)3H with transverse longitudinal separation

Abstract Longitudinal and transverse cross sections for the reaction 4 He(e, e′ p) 3 H were determined for missing momenta p m up to 190 MeV/ c and momentum transfers q up to 829 MeV/ c (at p m =90 MeV/ c ). “Experimental” spectral functions were obtained; the transverse one exhibits the free nucleon q -dependence at fixed p m and agrees with microscopic theories; the longitudinal spectral function is low by 30%.

Two-body correlations in the 6Li nucleus through the (e, e′ d) reaction

Abstract The dependence on the momentum transfer q for the 6Li (e, e′ d) cross section has been measured. In the 6Li(e, e′ d)4Heg.s. channel, data can be reproduced assuming the reaction as a quasi-elastic deuteron knock-out process, where the 6Li valence nucleons are probed. When the residuum is in the continuum channel, this assumption does not match the data, unless a wave function different from that of a free deuteron is considered for the pair involved in the reaction.