## Abstract A variable‐angle tandem mass spectrometer designed and constructed in order to perform angle‐resolved energy distribution experiments required for the investigation of ion–molecule reaction mechanisms is described. The performance of the instrument was tested using the CH~4~^+^–CH~4~ sy
Collision diameters for ion-molecule systems
✍ Scribed by A. MacKenzie Peers
- Publisher
- Elsevier Science
- Year
- 1970
- Weight
- 130 KB
- Volume
- 4
- Category
- Article
- ISSN
- 0020-7381
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lop-quadrupo!e effects are investigated via numerikl calculations of capture cross sections and computer-plotter : studies of ion trajectories in the quadrupole field. Capture cross sections are roughly equal to Langevin values for low rotatiox& temperatures; a large fraction of mult.iple reflection
Collision lifetimes Tc have been calculated numerically for ion-molecule colliaons. Dipoles cause multiple reflections leading to Tc values much ionger than specular reflection periods. Langevin collisions yield simple specuIar reflections. The interaction has besn studied via a computer-plotter sys