Abstract

Selected ion flow drift tube techniques have recently been used to investigate the role of vibrational excitation of molecular ions in collisions with neutrals. A model by Ferguson explaining the quenching of vibrational ionic excitation via transient complex formation followed by vibrational predissociation is supported by a series of systematic data on O 2 + ( v) and NO + ( v) ions. The excitation and de-excitation of molecular ions in collisions with helium buffer gas atoms has been shown to be quite efficient at elevated E/N. The influence of kinetic and vibrational energy, respectively, on the reactivity of molecular ions can be spearated quantitatively for a variety of slow ion/molecule reactions. The inclusion of an octopole storage section at the exit of the ion source of a selected ion flow drift tube allows investigations of the nascent state distributions of ions produced via different ionic reactions.

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 call

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.