We have measured differential cross sections for single and dissociative capture for 25 and 75 keV protons colliding with H2 and He. Significant differences were found depending on whether the projectile beam was coherent or incoherent. For 75 keV p+H2 these differences can be mostly associated with molecular two-center interference and possibly some contributions from path interference. For 25 keV (both targets) they are mostly due to path interference between different impact parameters leading to the same scattering angles and, for the H2 target, possibly some contributions from molecular two-center interference.
S. D. Sharma et al., "Projectile Coherence Effects in Electron Capture by Protons Colliding with H₂ and He," Physical Review A - Atomic, Molecular, and Optical Physics, vol. 86, no. 2, pp. 022706-1 - 022706-7, American Physical Society (APS), Aug 2012.
The definitive version is available at https://doi.org/10.1103/PhysRevA.86.022706
Keywords and Phrases
Coherence effects; Differential cross section; Electron capture; Impact-parameter; Projectile beam; Scattering angles; Two-center interference; Photodissociation; Projectiles; Protons
International Standard Serial Number (ISSN)
Article - Journal
© 2012 American Physical Society (APS), All rights reserved.
01 Aug 2012