Generalised oscillator strength and total cross sections for the X1Σg+→a1Πgtransition in molecular nitrogen at 500 to 2000 eV incident electron energies

Generalised oscillator strength for the dipole-forbidden quadrupole-allowed transition X1 Sigma g+ to a1 Pi g in molecular nitrogen by electron impact has been obtained from inelastic differential cross sections measured for incident electron energies of 500 to 2000 eV and scattering angles form 4.75 to 133.5 degrees . Relative measurements were made absolute by comparison with absolute elastic differential cross sections. The total cross sections for the transition X1 Sigma g+ to a1 Pi g have also been derived for various impact energies in two ways, by using the generalised oscillator strength and by directly integrating the measured differential inelastic collision cross sections.