Excitation of the Q11Σg+doubly excited state of H2by electron impact

摘要: 400 eV electrons were used to excite the autoionizing state Q11Σg+ of H2. The relative cross section was measured as a function of: (1) angle between internuclear axis and momentum transfer vector collision; (2) energy loss for fixed orientation molecular in laboratory frame. In first set measurements scattered at 18° with an 29 detected coincidence 2 H+ ion resulting from dissociation following autoionization. angular distribution ions recorded fitted calculated values. A maximum found when aligned vector. Secondly, yield electron-H2 collisions. Energy ranged 23 35 eV. lowest lying Q11Σg+, 1Σu+ 1Πg included fit data.