Articles you may be interested inA state-selected study of the H 2 + (X,v + =0-17,N + =1)+ Ne proton transfer reaction using the pulsedfield ionization-photoelectron-secondary ion coincidence scheme Stopping cross sections of three-membered ring-structure molecules and their double-bonded isomers for 0.3-2.0-MeV He+ ionsThe fluorescence efficiencies for excitation of nitrogen and air by neon and sodium ions have been measured at bombarding energies between 0.3 and 2.0 MeV. The molecular spectra studied were the first negative syste!p. of Nt (IN) and the second positive system of N2 (2P). The atomic spectra studieq were the N+ 5003 A multiplet and the N+ 5680 A multiplet. The fluorescence efficiencies of the 3914 A band and the 4278 A band of the IN system and the 3371 A band of the 2P system were derived directly from the fluorescence data as were the efficiencies of the 5003 A and 5680 A multiplets. Efficiencies relative to the 3914 A band were estimated for the (v' = 0, v" = 0-3) bands of the IN system and the (v' = 0, v" = 0-5), (v' = I, v" = 0-6), and (v' = 2, v" = 2-7) bands of the. 2P system. In addition, collisional deactivation coefficients for the 5003 A and 5680 A multiplets were derived from the efficiency data. The efficiencies of all spectra studied increased with increasing energy, with the efficiency of the 3914 A band being the lar$est (0.48%) at 2.0 MeV for Ne+ in N 2 . The ratio of the intensity of the 4278 A band to that of the 3914 A band indicates that the Franck-Condon principle is obeyed in this particular case. Also, the ranges of neon and sodium in nitrogen and air were obtained from emission measurements.