| e, 3e Differential cross section
of He (21S) and He (23S)KSHAMATA MUKTAVAT and M K SRIVASTAVA Department of Physics, University of Roorkee, Roorkee 247 667, India Email: muktadph@rurkiu.ernet.in; mksrafph@rurkiu.ernet.in Abstract. The angular distribution of the five-fold differential cross section for the electron impact double ionization of He (21S) and He (23S) has been studied. The kinematical conditions for maxima/minima in the angular distribution for the two cases have been compared. The two-step process for the double ionization is found to contribute very little in the triplet case.Keywords: Angular distribution; differential cross section; electronic excitation; ionization of molecules. Pacs Nos. 34.50.Fa; 34.80.Dp |