I. State-selected study of ion-molecule reactions using tandem molecular beam photoionization mass spectrometry. II. Absolute spin-orbit-state excitation cross sections for the reactions Ar/sup +/(/sup 2/P/sub 3/2/) + Ar(/sup 1/S/sub 0/) and Ar/sup +/(/sup 2/P/sub 3/2/) + N/sub 2/(X-tilde,v = 0)
A new ion-mole,haveule reaction apparatus, which consists of a photoionization source, a tandem mass spectrometer, and a radiofrequency (rf) octopole reaction cell, is described. Using a quadrupole mass filter to reject H/sub 3//sup +/ background ions formed at the photoionization region, absolute total cross sections for the reaction H/sub 2//sup +/(nu/sub 0/') + H/sub 2/(nu/sub 0/'' = 0) ..-->.. H/sub 3//sup +/ + H, have been measured as a function of the vibrational state of reactant H/sub 2//sup +/, where nu/sub 0/' = 0 to 4, over the center-of-mass collision energy range of 0.04 to 15 eV. With the triple-quadrupole double-octopole photoionization tandem mass spectrometer, absolute state-selected total cross sections for reaction N/sub 2//sup +/(X-tilde,v' = 0,1) + Ar(/sup 1/S/sub 0/) ..-->.. N/sub 2/(X-tilde,v) + Ar/sup +/(/sup 2/P/sub 3/2,1/2/) (reaction (1)) over E/sub c.m./ range of 1.2 to 140 eV have been measured. Using the triple-quadrupole double-octopole apparatus, absolute fine-structure transition cross sections for the reactions Ar/sup +/(/sup 2/P/sub 3/2/) + Ar and Ar/sup +/(/sup 2/P/sub 3/2/) + N/sub 2/(X-tilde,v = 0) at laboratory collision energies of 25 to 200 eV have been measured. 199 refs., 14 figs., 7 tabs.
- Research Organization:
- Ames Lab., IA (USA)
- DOE Contract Number:
- W-7405-ENG-82
- OSTI ID:
- 5227473
- Report Number(s):
- IS-T-1261; ON: DE86015769
- Country of Publication:
- United States
- Language:
- English
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Vibrational state-selected study of the reaction H/sup +//sub 2/(v'/sub 0/)+H/sub 2/(v''/sub 0/ = 0). -->. H/sup +//sub 3/+H using the tandem photoionization mass spectrometry and radio frequency ion guide methods
Absolute state-to-state total cross sections for the reactions N/sup +//sub 2/(X,v' = 0--2) +Ar(/sup 1/S/sub 0/). -->. N/sub 2/(X,v)+Ar/sup +/(/sup 2/P/sub 3/2,1/2/)
Related Subjects
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ARGON
ARGON IONS
ATOM COLLISIONS
CATIONS
CHARGED PARTICLES
COLLISIONS
CROSS SECTIONS
DATA
ELEMENTS
EXPERIMENTAL DATA
FLUIDS
GASES
HYDROGEN
HYDROGEN IONS
HYDROGEN IONS 1 PLUS
INFORMATION
ION COLLISIONS
ION-ATOM COLLISIONS
ION-MOLECULE COLLISIONS
IONIZATION
IONS
MASS SPECTROSCOPY
MOLECULE COLLISIONS
NITROGEN IONS
NONMETALS
NUMERICAL DATA
PHOTOIONIZATION
RARE GASES
SPECTROSCOPY