Normalization of the measured relative electron differential cross sections for 2 (1)Sigma(+) and (II)-I-1 states of N2O

The measured relative electron differential cross sections (DCSs) for excit ation of the 2(1)Sigma(+) and (1)Pi states of N2O (Marinkovie er al 1986 J. Phys. B: At. Mol. Phys. 19 2365) have been normalized through a recent for ward scattering function for the generalized oscillator strength. Measureme nts were obtained at electron impact energies of 15, 20, 30, 50 and 80 eV, using the electron spectrometer with crossed electron-molecule beam arrange ment. Measured data are corrected at and near zero scattering angles follow ing the analytic behaviour of the momentum dispersion method. Absolute DCS values for the (1)Pi state are compared with the only available set of theo retical data, while for the 2 (1)Sigma(+) state results are presented for t he first time.