Study Of Transfer Ionization Of He, Ne, Ar Atoms In Collisions With Partially Stripped Ions

In this thesis, the transfer ionization processes of He, Ne, Ar by C^q+(q=1-4) and O^q+(q=1-3) were investigated. The energy range studied are 17.9- to 120-keV/amu C¹⁺, 30- to 323-keV/amu C²⁺, 71.7- to 438-keV/amu C3+, 287- to 480-keV/amu C⁴⁺, 15.9- to 80.4-keV/amu O¹⁺, 30- to 254-keV/amu O²⁺ and 63.5- to 321.6-keV/amu O³⁺. The ratio between the cross sections for transfer ionisation and single capture is determined by measuring projectile-ion final charge states in coincidence with target recoil-ion final charge states.The energy dependencies of the measured cross section ratios are presented. The transfer ionization channel is important in present energy range. For a given incoming projectile charge state the ratios vary strongly with the energy and peaks at a certain energy. As the charge state increases, the maximum of ratio move towards to the higher energy. These results are analysed based on the independent particle model. The experimental data are compared with our theoretical results using an improved over-barrier model.