The single-electron-loss cross sections for 6- 30keV B+, C+, N+ and O+impacting on H2 have been measured, for the first time, using the growth-rate method. The cross sections of B+ and C+ as functions of ion energy in the region of 6 - 30keV from the present measurements can join smoothly to those in the 100-2500keV region from previous measurements.
The single-electron loss cross sections for 6~30 keV He+, Ne+, Ar+, Kr+, Xe+ and Cl+ impacting on H2 were measured using the growth-rate method. The present cross-section data of He+ are in good agreement with others' measurements. The other cross-section data of this work are reported for the first time.
It is demonstrated that the main factor defining the electron loss in magnetic traps in the collisionless limit is the departure of fast electrons from magnetic traps to the boundaries of the structure among other things.
The electron loss and electron capture cross sections σi,i+m and σi,i-m for boron ions and atoms traveling at the velocities V=1.19 and 1.83 a.u.
It is found that the electron loss cross sections can be described by a formula which was previously derived in the free-collision approximation and takes into account features of both the ions and the ambient atoms.
Our computational results for the cross section for electron loss are in good agreement with existing experimental data.
The model developed is used to calculate the cross sections σΣ and characteristic scattering angles θc for the process of electron loss by H- ions with energy E = 0.1-100 MeV in targets consisting of atoms with Z = 2-54.