Collisional electron detachment and decomposition cross sections for SF/sup /minus///sub 6/, SF/sup /minus///sub 5/, and F/sup /minus// on SF/sub 6/ and rare gas targets
Absolute total cross sections for collisional electron detachment and collision-induced dissociation (CID) have been measured for binary collisions of SF/sup /minus///sub 6/ and SF/sup /minus///sub 5/ with rare gas and SF/sub 6/ targets for laboratory collision energies ranging from about 10 up to 500 eV. The cross sections for electron detachment of SF/sup /minus///sub 6/ are found to be surprisingly small, especially for the SF/sub 6/ target, for relative collision energies below several tens of electron volts. Specifically, detachment onsets are found to occur at around 30 and 90 eV for the rare gas and SF/sub 6/ targets, respectively. The CID channel which leads to F/sup /minus// as a product is observed to dominate detachment for relative collision energies below 100 eV. The results for the SF/sup /minus///sub 5/ projectile are remarkably similar to those exhibited for SF/sup /minus///sub 6/. The role of long-lived excited states in the reactant SF/sub 6/ ion beam is discussed. SF/sub 6/
- Research Organization:
- Department of Physics, College of William and Mary, Williamsburg, Virginia 23185(US); National Institute of Standards and Technology, Gaithersburg, Maryland 20899
- OSTI ID:
- 6009507
- Journal Information:
- J. Chem. Phys.; (United States), Journal Name: J. Chem. Phys.; (United States) Vol. 91:4; ISSN JCPSA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
400201* -- Chemical & Physicochemical Properties
ANIONS
ATOM COLLISIONS
ATOMIC IONS
BEAMS
CHARGED PARTICLES
CHEMICAL REACTIONS
COLLISIONS
CROSS SECTIONS
DECOMPOSITION
DISSOCIATION
ELECTRON DETACHMENT
ELEMENTS
ENERGY RANGE
EV RANGE
EV RANGE 10-100
EV RANGE 100-1000
FLUIDS
FLUORIDES
FLUORINE COMPOUNDS
FLUORINE IONS
GASES
HALIDES
HALOGEN COMPOUNDS
ION BEAMS
ION COLLISIONS
ION-ATOM COLLISIONS
ION-MOLECULE COLLISIONS
IONS
MOLECULAR IONS
MOLECULE COLLISIONS
NONMETALS
RARE GASES
SULFUR COMPOUNDS
SULFUR FLUORIDES
TOTAL CROSS SECTIONS