Absolute generalized oscillator strength profile of negative ion resonance at 8.9 eV in C2F6

摘要

A temporary negative ion resonance at 8.9eV in C2F6 has been clearly identified using angle-resolved electron energy loss spectroscopy at 2.5keV impact energy, and can be attributed to electron capture into 1(2)alpha(1u), 1(2)alpha(1)g, 2(2)alpha(2u), and 1(2)e(g) virtual molecular orbitals. The corresponding absolute generalized oscillator strength profile is found to have a shape characteristic of non-dipole interaction with the maximum K similar to 0.8 a.u. of momentum transfer.