Selection rules for electric multipole transition of diatomic molecule in scattering experiments*
Zhu Lin-Fana),b)†, Tian Hong-Chuna),b), Liu Ya-Weia),b), Kang Xua),b), Liu Guo-Xinga),b)
       
Electron energy loss spectra of N2, measured at an incident electron energy of 1500 eV and the scattering angles of 0.5°, 5°, and 10°, respectively. The corresponding squared momentum transfers at 0.5°, 5°, and 10° are 0.014 a.u., 0.841 a.u., and 3.342 a.u., respectively.