GUIDED-ION BEAM MEASUREMENTS OF THE KR-TRANSFER REACTION(+NO CHARGE)

Guided-ion beam measurements of Kr++NO charge-transfer reaction cross sections are presented over a collision energy range of 0.08 to 16 eV (c.m.). At energies below 2 eV, the charge-transfer cross section is a pproximately two orders of magnitude smaller than the Langevin capture cross section and decreases with collision energy displaying an E(T)( -0.4) dependence. The cross section reaches a minimum at about 3 eV, i ncreases with collision energy until about 8 eV, and then decreases ab ruptly at higher energies. N+ and O+ are observed at and above their r espective thermodynamic thresholds. The results are discussed with res pect to energy resonance and Franck-Condon models.