Abstract
Optical emission from electronically excited fragments, H, CH and CH+, was observed in collisions of He+ and Ar+ ions with C2H2 molecules in the energy range 30-300 eV. Emission from excited acetylene molecules or ions was not observed. Of these excited fragments, CH(B2 Sigma -) formed in He+ collisions and CH+(B1 Delta ) in He+ and Ar+ collisions show a linear dependence on the target pressure, indicating that they are produced in primary collision processes. On the other hand, CH(B2 Sigma -) formed in Ar+ collisions and CH(A2 Delta ) in He+ and Ar+ collisions show a quadratic dependence superimposed on a linear dependence on the target pressure. The pressure dependence of CH+(A1 Pi ) ions formed in He+ collisions shows a linear decrease, suggesting that a quenching process participates in the ion formation. Some reaction schemes are assumed in order to understand the ion production, using the basic concept that charge transfer between the projectile ion and the target is an essential process in the reactions.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Journal of Physics B: Atomic and Molecular Physics
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
