Velocity dependence of the fragmentation of methane caused by fast proton impact

Conference · Sat Jun 05 04:00:00 EDT 1993 · AIP Conference Proceedings (American Institute of Physics); (United States)

OSTI ID:5518040

Ben-Itzhak, I; Carnes, K D; Ginther, S G; Johnson, D T; Norris, P J; Weaver, O L ^[1]

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1. James R. Macdonald Laboratory, Department of Physics, Kansas State University, Manhattan, Kansas 66506 (United States)

We have measured the relative cross sections of the different breakup channels of [ital CH][sub 4] caused by 1 to 12 MeV [ital H][sup +] impact. The ion-neutral channels are found to be independent of the collision velocity. Good agreement with previous measurements by Malhi [ital et] [ital al]. and with electron impact measurements is observed. On the other hand, the ion-pair breakup channels show some dependence on the collision velocity. The ion-pair data was compared with electron impact measurements at 1 and 10 keV. Significant deviations at the low electron impact energy can be seen. The ratio of double to single ionization of [ital CH][sub 4] is about 1% and decreases slowly with the collision velocity. Triple ionization at these velocities is negligible.

• OSTI ID: 5518040
• Report Number(s): CONF-920948--
• Conference Information: Journal Name: AIP Conference Proceedings (American Institute of Physics); (United States) Journal Volume: 274:1
• Country of Publication: United States
• Language: English

Related Subjects

664300* -- Atomic & Molecular Physics-- Collision Phenomena-- (1992-)
74 ATOMIC AND MOLECULAR PHYSICS
ALKANES
BARYONS
COLLISIONS
ELEMENTARY PARTICLES
ENERGY DEPENDENCE
ENERGY RANGE
FERMIONS
FRAGMENTATION
HADRONS
HYDROCARBONS
ION COLLISIONS
ION-MOLECULE COLLISIONS
IONIZATION
METHANE
MEV RANGE
MEV RANGE 01-10
MOLECULE COLLISIONS
NUCLEONS
ORGANIC COMPOUNDS
PROTONS