Partial-ionization cross sections of a CO{sub 2} molecule due to impact of 10-26-keV electrons

Journal Article · Fri Oct 15 00:00:00 EDT 2010 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.82.044702· OSTI ID:21452622

Bhatt, Pragya; Singh, Raj; Yadav, Namita; Shanker, R ^[1]

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1. Atomic Physics Laboratory, Department of Physics, Banaras Hindu University, Varanasi 221005 (India)

Experimental data on total- and partial-ionization cross sections of ionic fragments of CO{sub 2} molecule produced by impact of 10-26-keV electrons are obtained on a crossed-beam apparatus in our laboratory. An ejected electron-produced ion-coincidence technique is employed together with a time-of-flight mass spectrometer for analysis of the ions. The six ionic fragments, CO{sub 2}{sup +}, CO{sup +}, CO{sub 2}{sup 2+}, O{sup +}, C{sup +}, and C{sup 2+}, resulting from dissociative ionization of the CO{sub 2} molecule are observed and identified; their relative ionization cross sections and branching ratios are determined as a function of impact energy. The binary-encounter Bethe model is found to overestimate the experimental data for total-ionization cross sections of the observed ions. No other experimental or theoretical data exist in the investigated energy range to make a direct comparison with the present results.

• OSTI ID: 21452622
• Journal Information: Physical Review. A, Vol. 82, Issue 4; Other Information: DOI: 10.1103/PhysRevA.82.044702; (c) 2010 The American Physical Society; ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
BRANCHING RATIO
CARBON DIOXIDE
CARBON IONS
COBALT IONS
COMPARATIVE EVALUATIONS
CROSS SECTIONS
DISSOCIATION
ELECTRON-MOLECULE COLLISIONS
ELECTRONS
IONIZATION
KEV RANGE
MOLECULAR IONS
MOLECULES
OXYGEN IONS
TIME-OF-FLIGHT MASS SPECTROMETERS
CARBON COMPOUNDS
CARBON OXIDES
CHALCOGENIDES
CHARGED PARTICLES
COLLISIONS
DIMENSIONLESS NUMBERS
DYNAMIC MASS SPECTROMETERS
ELECTRON COLLISIONS
ELEMENTARY PARTICLES
ENERGY RANGE
EVALUATION
FERMIONS
IONS
LEPTONS
MASS SPECTROMETERS
MEASURING INSTRUMENTS
MOLECULE COLLISIONS
OXIDES
OXYGEN COMPOUNDS
SPECTROMETERS
TIME-OF-FLIGHT SPECTROMETERS