EXTENSION OF IMGO MODEL TO PROJECTILE VELOCITIES WHERE ELECTRON-CAPTURE-SIMILAR-TO-ELECTRON-LOSS CROSS-SECTIONS

An intramolecular geometric outscattering (IMGO) model, developed to extract ''atomic'' total single electron capture sigma(10) cross sections from sigma(10) and sigma(01) (electron loss) measurements on C-bearing molecules by including intramolecular secondary electron loss processes for projectiles with sigma(10)much less than sigma(01), was extended to 100-2500 keV H+ on CmHn data which reaches projectile velocities where sigma(10)similar to sigma(01). Atomic C and H cross sections compare well with theoretical calculations over the entire energy range. Reasonable ''atomic'' sigma(10) values for H, even when it contributed <1% to the overall cross section, could be obtained from a sufficiently large set of CmHn data. An initial analysis of total electron loss cross sections is also presented.