CHARGE-TRANSFER CROSS SECTIONS FOR REACTION N2++O2-]O2++N2 AT VERY LOW ENERGIES

The charge-transfer cross section for N2+ + O2 → O2+ + N2 has been measured by a drifttube technique in the formerly inacessible energy region from 0.05 to 1 eV in the center-of-mass system. In this energy region the charge-transfer cross section σ may roughly be represented by σ=2.2 Â2/(c.m.energy in eV) 1/2. This expression is consistent with a model dominated by the induced dipole interaction, and it connects smoothly thermal-energy measurements to ion-beam measurements at several eV. © 1968 The American Physical Society.