State-selective one-electron capture by ground-state ions in slow collisions with He, Ne and Ar using double translational energy spectroscopy

Abstract

Double translational energy spectroscopy (DTES) has been used to study stateselective one-electron capture by pure ground-state N 2+ 2s 2 2p( 2 P) ions in collisions with He, Ne and Ar at energies within the range 1.75-8.0 keV. The main collision channels have been identified and their relative importance has been assessed quantitatively. These measurements avoid the ambiguities inherent in the interpretation of previous TES measurements carried out using primary N 2+ ion beams containing unknown fractions of metastable N 2+ 2s2p 2 ( 4 P) ions. In the absence of any detailed theoretical studies, we have calculated Landau-Zener reaction windows for these processes and shown that they accommodate the observed collision channels with limited success.

Rate Coefficient Determination in Charge Transfer Reactions

“…The experimental study of the electron-capture from the ground state of helium atoms by N 2+ (2p) 2 P o ions has received recently a lot of attention [36][37][38]. Four reaction channels and two entry channels are involved in the transfer mechanism : The results displayed in Fig.…”

Absolute Total Single–Electron–Capture Cross Sections of O2+ with N2 Gas

“…However, the experimental measurements are confined mainly to inert and hydrogen gases [5][6][7][8][9][10][11][12][13][14][15][16].…”