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Research Paper | Physics | Volume 15 Issue 1, January 2026 | Pages: 1033 - 1040 | India
Single Electron Capture Cross-Sections in Ion-Helium Collisions
Abstract: This research presents a calculation of single-electron capture cross-sections resulting from the collision of helium atoms with a variety of projectile ions-specifically He2+, Liq+ (where q=1,2,3), C6+, and O8+ over an incident energy spectrum ranging from 50 to 5000 keV/amu. We employed the four-body boundary corrected continuum intermediate state (BCCIS-4B) formalism, utilizing both the post and prior forms to ensure robust analysis. This theoretical framework is specifically designed to account for distortions in the final channel arising from Coulomb continuum states associated with the projectile ion and the active electron within the field of the residual target ion. By summing the contributions from shells and sub-shells up to n=3, we derived the total cross-sections for single-electron capture. Our findings suggest that while capture into excited states is a dominant factor in asymmetric collisions (where the projectile charge ZP exceeds the target charge ZT), it becomes negligible in symmetric collision systems. The numerical data obtained via the post-form approximation exhibits a high degree of consistency with established experimental data. Furthermore, the divergence between the post and prior forms is generally contained within 30%, with the notable exception of Li++He systems at energies below 150 keV/amu.
Keywords: Charge Transfer, Ion-Atom Interaction, Theoretical Cross-sections, BCCIS-4B
How to Cite?: Dr. Rakesh Samanta, "Single Electron Capture Cross-Sections in Ion-Helium Collisions", Volume 15 Issue 1, January 2026, International Journal of Science and Research (IJSR), Pages: 1033-1040, https://www.ijsr.net/getabstract.php?paperid=SR26115200723, DOI: https://dx.dx.doi.org/10.21275/SR26115200723