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Absolute differential and total cross sections for direct
and
charge-transfer scattering of keV protons by O2
R. Cabrera-Trujillo, Y. Öhrn, E. Deumens, J. R. Sabin,
and B. G. Lindsay
Phys. Rev. A 70, 042705 (2004)
Calculated and experimental dierential direct, charge-transfer,
and total scattering cross sections
are presented for collisions of H+ with O2.
Experimental cross sections are obtained for
projectile energies of 0.5, 1.5 and 5.0 keV, and scattering angles
of 0.15° to 5°; while the theoretical
results extend from 0.5 to 25 keV and encompass scattering angles
from 0.01° to 180°. 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.
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