Double differential cross sections for ion impact ionization of ammonia(NH 3) and methane (CH 4) molecules

30th International Conference on Photonic, Electronic, and Atomic Collisions

Purkait, M.^1

Department of Physics, Ramakrishna Mission Residential College, Narendrapur, Kolkata

700103, India^1

关键词: Coulomb wave functions;    Cross sections;    Double differential cross sections;    Ejected electrons;    Ion-impact ionization;    Ion-molecule collisions;    Single ionization;    Theoretical approach;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/875/11/102001/pdf
DOI  :  10.1088/1742-6596/875/11/102001

来源: IOP

【 摘 要 】

We present a theoretical approach to calculate double-differential cross sections (DDCS) for single ionization of ammonia (NH3) and methane (CH4) molecules by the impact of proton at energies 0.25 MeV and 2 MeV respectively. The calculation are performed by the three-body formalism of three-Coulomb wave model (3C-3B). In the present formalism, the interaction of the projectile ion with the target is described by the Coulomb continuum wave functions in the initial channel. In the final channel, we have expressed the total wavefunctions as the product of pair-wise Coulomb wavefunctions among the ejected electron, projectile ion and the residual target ion, respectively.