Analysis of gross vibrational-rotational energy-loss spectra in Li + - N 2 collisions with the hard-potential model

摘要: The energy-loss spectra in large-angle ${\mathrm{Li}}^{+}+{\mathrm{N}}_{2}$ scatterings are analyzed with the hard-potential model recently proposed, along previous hard-shell model. respective roles of rotational and vibrational excitations revealed through systematic comparisons experimental models a wide range energies $(8--100\phantom{\rule{0.3em}{0ex}}\mathrm{eV})$ angles (40\ifmmode^\circ\else\textdegree\fi{}--120\ifmmode^\circ\else\textdegree\fi{}). effect excitation is found to manifest itself shifts double peaks. Their energy dependence accounted for by shape equipotential surface as well suddenness collision. peak position shown be sensitive curvature at orientation angle 90\ifmmode^\circ\else\textdegree\fi{}, hence three-body potential. unacceptable result semiclassical calculation suggested come from inappropriate potential taken.