Formation of He(3 sup 3 D) by electron capture in collisions of He sup + with various polyatomic molecules

Journal Article · Thu Mar 01 00:00:00 EST 1990 · Physical Review, A (General Physics); (USA)

DOI:https://doi.org/10.1103/PhysRevA.41.2453· OSTI ID:6916707

Monce, M N ^[1]

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1. Department of Physics, Connecticut College, New London, Connecticut 06320 (USA) Department of Astronomy, Connecticut College, New London, Connecticut 06320 (USA)

Electron capture into the 3 {sup 3}D state of He was measured by the detection of 5876-A photons from the 3{sup 3}D--2 {sup 3}P transition following collisions of He{sup +} with various polyatomic molecules. The photon-emission cross section for this transition was measured for each target over the helium-ion energy range of 100 to 300 keV. The targets used were H{sub 2}, N{sub 2}, O{sub 2}, CO, CO{sub 2}, N{sub 2}O, CH{sub 4}, C{sub 2}H{sub 2}, C{sub 2}H{sub 4}, and C{sub 2}H{sub 6}. For all targets, the cross sections could be fitted very well with a 1/{ital v}{sup 2} function, where {ital v} is the helium-ion velocity.

• OSTI ID: 6916707
• Journal Information: Physical Review, A (General Physics); (USA), Vol. 41:5; ISSN 0556-2791
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ACETYLENE
ION-MOLECULE COLLISIONS
CARBON DIOXIDE
CARBON MONOXIDE
ETHANE
ETHYLENE
HELIUM IONS
HYDROGEN
METHANE
NITROGEN
NITROUS OXIDE
OXYGEN
CROSS SECTIONS
ELECTRON CAPTURE
EXCITATION
HELIUM
KEV RANGE 100-1000
POLYMERS
ALKANES
ALKENES
ALKYNES
CAPTURE
CARBON COMPOUNDS
CARBON OXIDES
CHALCOGENIDES
CHARGED PARTICLES
COLLISIONS
ELEMENTS
ENERGY RANGE
ENERGY-LEVEL TRANSITIONS
FLUIDS
GASES
HYDROCARBONS
ION COLLISIONS
IONS
KEV RANGE
MOLECULE COLLISIONS
NITROGEN COMPOUNDS
NITROGEN OXIDES
NONMETALS
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
RARE GASES
640304* - Atomic
Molecular & Chemical Physics- Collision Phenomena