Absolute state-selected cross sections measurements for ion-molecule reactions involving O+(4S, 2D, 2P)

Xiaochun Li; S. Stimson; G. D. Flesch; Cheuk Yiu Ng

doi:10.1117/12.220858

18 September 1995 Absolute state-selected cross sections measurements for ion-molecule reactions involving O⁺(⁴S°, ²D°, ²P°)

Xiaochun Li, S. Stimson, G. D. Flesch, Cheuk Yiu Ng

Author Affiliations +

Proceedings Volume 2548, Laser Techniques for State-Selected and State-to-State Chemistry III; (1995) https://doi.org/10.1117/12.220858
Event: SPIE's 1995 International Symposium on Optical Science, Engineering, and Instrumentation, 1995, San Diego, CA, United States

Abstract

Significant technical advances have been made in the application of the triple-quadrupole double-octopole mass spectrometer for absolute total state-selected cross section measurements of ion-molecule reactions involving O⁺(⁴S degree(s), ²D degree(s), ²P degree(s)). By controlling the collision energies for dissociative charge transfer collisions of He⁺ (Ne⁺, Ar⁺) plus O₂ in a radio frequency (rf) octopole ion guide gas cell, and by applying appropriate effective ion trapping potentials to the rf octopole ion guide, we have demonstrated that state-selected O⁺(⁴S degree(s)), O⁺(²D degree(s)), and O⁺(²P degree(s)) reactant ion beams with high purities and usable intensities can be prepared for scattering experiments.

Citation Download Citation

Xiaochun Li, S. Stimson, G. D. Flesch, and Cheuk Yiu Ng "Absolute state-selected cross sections measurements for ion-molecule reactions involving O⁺(⁴S°, ²D°, ²P°)", Proc. SPIE 2548, Laser Techniques for State-Selected and State-to-State Chemistry III, (18 September 1995); https://doi.org/10.1117/12.220858

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