Ion Energy-Loss Spectroscopy for the Collisions of Kr+(2PJ) with N2, CO, NO, and O2

Ion energy-loss spectra for 1308 eV Kr + ( 2 P J ) incident on N 2 , CO, NO and O 2 were measured. For all molecules, fine-structure transitions between different J states of the projectile and vibrational excitations of the molecules were observed. In the case of N 2 and NO, the srectra were relatively simple and only the excitations of fundamental vibrations were found. For CO and O 2 , the excitations of the harmonics, v =0→2, were also observed. In addition to these, for CO, the peak due to the process, Kr + ( 2 P 1/2 )+CO( 1 Σ, v =0)→Kr + ( 2 P 3/2 )+CO( 1 Σ, v '=1), was found. For O 2 , the peak due to the electronic excitation in the target, 3 Σ→ 1 Δ , was observed as well as the prominent peak corresponding to the process, Kr + ( 2 P 1/2 )+O 2 ( 3 Σ, v =0)→Kr + ( 2 P 3/2 )+O 2 ( 1 Δ , v '=0).