A conventional transmission electron microscope, equipped with a fast recording system able to measure the electron arrival time and the position of single electrons, is used to show the build-up of interference patterns. Two experiments are presented. The first is the electron version of the Grimaldi and Young experiments performed with light, where single electrons strike on an opaque thin wire. Interference fringes are observed in the geometrical shadow of the wire and diffraction effects are clearly displayed at the wire edges. The second, original experiment reports the build-up of two-slit interference patterns with single electrons.
G. Matteucci, M. Pezzi, G. Pozzi, G. L. Alberghi, F. Giorgi, A. Gabrielli, et al. (2013). Build-up of interference patterns with single electrons. EUROPEAN JOURNAL OF PHYSICS, 34, 511-517 [10.1088/0143-0807/34/3/511].
Build-up of interference patterns with single electrons
MATTEUCCI, GIORGIO;POZZI, GIULIO;ALBERGHI, GIAN LUIGI;GIORGI, FILIPPO MARIA;GABRIELLI, ALESSANDRO;SEMPRINI CESARI, NICOLA;VILLA, MAURO;ZOCCOLI, ANTONIO;
2013
Abstract
A conventional transmission electron microscope, equipped with a fast recording system able to measure the electron arrival time and the position of single electrons, is used to show the build-up of interference patterns. Two experiments are presented. The first is the electron version of the Grimaldi and Young experiments performed with light, where single electrons strike on an opaque thin wire. Interference fringes are observed in the geometrical shadow of the wire and diffraction effects are clearly displayed at the wire edges. The second, original experiment reports the build-up of two-slit interference patterns with single electrons.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
