Electron loss and transfer for 20--110-keV iodine--rare-gas collisions

Atomic cross sections have been measured for the loss and transfer of an electron during a collision between a neutral iodine atom and a rare-gas atom. The neutral iodine beam, with energy between 20 to 110 keV, was unlikely to contain a significant mixture of metastable-state atoms because it was produced by neutralizing a negative-iodine-ion beam. The σ/sub 0+/ cross section is largest for the argon and krypton targets, not for xenon, as might have been expected. The σ/sub 0-/ cross section is very small for the light targets and only becomes appreciable for xenon at the highest energy used