INELASTIC ELECTRON-SCATTERING FROM N-14 AT 180-DEGREES

Inelastic electron scattering from N14 at 180°has been studied at incident energies of 40.6, 50.6, and 60.2 MeV. Transitions to levels at 2.31, 9.17, and 10.43 MeV excitation energy were observed to be predominantly M1. The transition to the level at 16.11 MeV probably contains some M2 strength, and transitions to levels at 12.54, 13.27, and 13.76 appear to exhibit some M 1 strength. Data on the 2.313 MeV transition, combined with earlier experiments, bring the observed reduced transition width into agreement with resonance fluorescence techniques. Transition widths for the other levels with reasonably certain multipolarities are also given. NUCLEAR REACTIONS N14(e,e′), θ=180°, E=40.6, 50.6, 60.2 MeV; measured σ(E); deduced Γ0, multipolarities for transitions excited. © 1979 The American Physical Society.