Interference effects due to projectile target nucleus scattering in single ionization of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msub><mml:mi mathvariant="normal">H</mml:mi><mml:mn>2</mml:mn></mml:msub></mml:math>by<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mn>75</mml:mn><mml:mtext>−</mml:mtext><mml:mi>keV</mml:mi></mml:mrow></mml:math>proton impact
Jason S. AlexanderPhysics Department and LAMOR, Missouri University of Science and Technology, Rolla, Missouri 65409, USAAaron LaForgePhysics Department and LAMOR, Missouri University of Science and Technology, Rolla, Missouri 65409, USAA. HasanDepartment of Physics, UAE University, P.O. Box 17551, Alain, Abu Dhabi, United Arab EmiratesZ S MachavarianiPhysics Department and LAMOR, Missouri University of Science and Technology, Rolla, Missouri 65409, USAMarcelo F. CiappinaMax-Planck-Institut für Physik Komplexer Systeme, Nöthnizer Strasse 38, 01187 Dresden, GermanyR D RivarolaInstituto de Física Rosario (CONICET-UNR), Avenida Pellegrini 250, 2000 Rosario, ArgentinaD. H. MadisonPhysics Department and LAMOR, Missouri University of Science and Technology, Rolla, Missouri 65409, USAMichael SchulzPhysics Department and LAMOR, Missouri University of Science and Technology, Rolla, Missouri 65409, USA
2008lv
ABI
Annotatsiya
Doubly differential cross sections (DDCSs) for single ionization of molecular hydrogen by $75\text{\ensuremath{-}}\mathrm{keV}$ proton impact have been measured and calculated as a function of the projectile scattering angle and energy loss. Interference structures are observed in the scattering angular dependence of the DDCSs, which disappear, however, at electron speeds near the projectile speed. The comparison to our calculations shows that the projectile-target nucleus interaction plays a central role. Furthermore, our data suggest that for a given scattering angle, ionization favors well-defined molecular orientations.
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