DISSOCIATION OF METHANE MOLECULE IONS FORMED IN CHARGE EXCHANGE COLLISIONS WITH POSITIVE IONS. ION-MOLECULE REACTIONS OF METHANE.
Abstract
Mass spectra of methanes (CH4 and CD4) were obtained after charge exchange with slow positive ions. The intensities of the peaks were plotted as a function of the energy absorbed by the molecule during the charge exchange. Integration of these curves gives a mass spectrum in reasonable agreement with that obtained in electron impact. The complete dissociation of the parent ion above 15 eV throws some doubt upon the determination of the higher ionization potential of methane from the break at 19.4 eV of the ionization efficiency curve for the production of the parent ion. The ion-molecule reaction CH4(+) + CD4 yields CH3 + CD2H(+) + D2 indicates that in CH5(+) all bonds are of approximately equal strength. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 06, 1964
- Accession Number
- AD0603091
Entities
People
- H. Von Koch
Organizations
- Royal Institute of Technology