Absolute differential and total cross sections for direct and charge-transfer scattering of keV protons by O{sub 2}

Journal Article · Fri Oct 01 00:00:00 EDT 2004 · Physical Review. A

DOI:https://doi.org/10.1103/PhysRevA.70.042705· OSTI ID:20646365

Cabrera-Trujillo, R; Oehrn, Y; Deumens, E; Sabin, J R; Lindsay, B G ^[1]

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1. Quantum Theory Project, Departments of Physics and Chemistry, University of Florida, P.O. Box 118435, Gainesville, Florida 32611-8435 (United States)

Calculated and experimental differential direct, charge-transfer, and total scattering cross sections are presented for collisions of H{sup +} with O{sub 2}. Experimental cross sections are obtained for projectile energies of 0.5, 1.5, and 5.0 keV, and scattering angles of 0.15 deg. to 5 deg. while the theoretical results extend from 0.5 to 25 keV and encompass scattering angles from 0.01 deg. to 180 deg. We find good agreement between the calculated and measured differential and total cross sections. Also, a diffraction slit effect, which is target orientation dependent, is found in the differential scattering cross section. A theoretical explanation of the effect is presented.

• OSTI ID: 20646365
• Journal Information: Physical Review. A, Vol. 70, Issue 4; Other Information: DOI: 10.1103/PhysRevA.70.042705; (c) 2004 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
CHARGE EXCHANGE
DIFFRACTION
HYDROGEN IONS 1 PLUS
ION-MOLECULE COLLISIONS
KEV RANGE
ORIENTATION
OXYGEN
PROTONS
TOTAL CROSS SECTIONS