Evidence for Interference Effects in Electron Emission from H2 Colliding with 60MeV/u Kr34+ Ions

Nikolaus Stolterfoht (1) , Béla Sulik (2) , Volker Hoffmann (1) , Bengt Skogvall (3) , Jean-Yves Chesnel (4) , Jimmy Rangama (4) , François Frémont (4) , Dominique Hennecart (4) , Amine Cassimi (4) , Xavier Husson (4) , Allen L. Landers (5) , John A. Tanis (5) , Mariel E. Galassi (6) , Roberto D. Rivarola (6)

1 Hahn-Meitner-Institut Berlin
2 ATOMKI - Institute for Nuclear Research [Budapest]
3 TU - Technical University of Berlin / Technische Universität Berlin
4 CIMAP - UMR 6252 - Centre de recherche sur les Ions, les MAtériaux et la Photonique
5 Western Michigan University [Kalamazoo]
6 IFIR - Instituto de Física de Rosario [Santa Fe]

Cross sections for electron emission in the energy range from 2–300 eV were measured for 60 MeV/u Kr34+ ions impacting on H2. Model calculations are introduced to guide the search for interference effects in the electron spectra produced by the coherent emission of electrons from the two H atoms in analogy with Young’s two-slit experiment. Experimentally, a full sinusoidal-like oscillation was observed in the energy range up to 250 eV in good agreement with the calculations. The oscillatory structure is found to be similar for the observation angles 20°, 30°, 150°, and 160°.

Mots clés: Ionization; Electron emission; Coherent electron emission; Electron interference; Young-type interference; Ion-molecule collisions; Fast ion-molecule collisions; Electron spectroscopy; Energy distribution; Model calculations

Domaines: Physique Atomique [physics.atom-ph]; Agrégats Moléculaires et Atomiques [physics.atm-clus]; Physique Quantique [quant-ph]

Nikolaus Stolterfoht, Béla Sulik, Volker Hoffmann, Bengt Skogvall, Jean-Yves Chesnel, et al.. Evidence for Interference Effects in Electron Emission from H2 Colliding with 60MeV/u Kr34+ Ions. Physical Review Letters, 2001, 87 (2), pp.023201. ⟨10.1103/PhysRevLett.87.023201⟩. ⟨hal-01217001⟩