Abstract
The creation of an e--e+ pair as an intermediate mechanism of electron capture in collisions between bare heavy ions at relativistic impact velocities is analysed. A distorted-wave model is developed to study the process. A two-centre Sommerfeld-Maue spinor is introduced to represent the positron as moving in the simultaneous presence of the projectile and target nuclei. Single differential cross sections are calculated as a function of positron energy. Comparisons are given with results obtained by using other theoretical approximations.
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