Dresden 2011 – scientific programme

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A: Fachverband Atomphysik

A 12: Interaction of matter with ions I

A 12.2: Talk

Tuesday, March 15, 2011, 14:30–14:45, BAR 106

Manipulating Atomic Fragmentation Processes by Controlling the Projectile Coherence — Kisra Egodapitiya^1,2, •Aaron LaForge^1,2, Sachin Sharma¹, Ahmad Hasan³, Robert Moshammer², Daniel Fischer², Don Madison¹, and Michael Schulz¹ — ¹Dept. of Physics, Missouri University of Science & Technology , Rolla, USA — ²Max Planck Institut für Kernphysik, Heidelberg, DE — ³Dept of Physics, United Arab Emirates University, Abu Dhabi, UAE

We have performed an atomic collision version of Young*s double slit experiment. The scattering angle dependence of double differential cross sections for ionization of H2 by 75 keV proton impact for a fixed projectile energy loss was studied. Depending on the coherence of the projectile beam, an interference due to indistinguishable diffraction of the projectile from the two atomic centers was either present or absent in the data. The results have far-reaching implications on several decades of atomic scattering theory.