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                   PRÓXIMO COLOQUIO DEL IAFE
                 Instituto de Astronomía y Física del Espacio
                           CONICET-UBA
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 "Young type interferences using electrons: a complete analogy with photon
interferences "

                            François Frémont
                          Université de Caen, Francia
                        Miercoles 14 de diciembre 2011, 14hs.
                            Aula del Edificio IAFE

A few years ago, we demonstrated experimentally that, as predicted by P.
Dirac, one electron can interfere with itself. The experiment is based on
ion-molecule collisions : A He2+ ion at low energy (30 keV - 8 keV)
captures both H2 -target electrons. After the collision, since the
projectile is in a doubly excited state, a Auger electron is emitted and
scatters on both H2 protons. The interference manifests itself in the
presence of ocillations in the angular distribution of Auger electrons. We
will present in details recent results, showing a complete analogy between
photon and electron interferences. Of course, due to the fact that the
interactions that are involved are different in nature, we will also point
out the differences.