We report the first observation of Young-type interference effects in a two-electron transfer process. These effects change strongly as the projectile velocity changes in fast (1.2 and 2.0 MeV) He2++H2 collisions as manifested in strong variations of the double-electron capture rates with the H2 orientation. This is consistent with fully quantum mechanical calculations, which ignore sequential electron transfer, and a simple projectile de Broglie wave picture assuming that two-electron transfer probabilities are higher in collisions where the projectile passes close to either one of the H2 nuclei.
D. S. Misra and H. T. Schmidt and M. Gudmundsson and D. Fischer and N. Haag and H. A. Johansson and A. Kallberg and B. Najjari and P. Reinhed and R. S. Schuch and M. S. Schoffler and A. Simonsson and A. B. Voitkiv and H. Cederquist, "Two-Center Double-Capture Interference in Fast H e²⁺+ H₂ Collisions," Physical Review Letters, vol. 102, no. 15, pp. 153201-1-153201-4, American Physical Society (APS), Apr 2009.
The definitive version is available at https://doi.org/10.1103/PhysRevLett.102.153201
Keywords and Phrases
De Broglie Waves; Electron Captures; Electron Transfers; Projectile Velocities; Quantum-mechanical Calculations; Two-electron Transfers; Type Interferences; Electron Transitions
International Standard Serial Number (ISSN)
Article - Journal
© 2009 American Physical Society (APS), All rights reserved.
01 Apr 2009