© Copyright, Department of Physics, University of Illinois at Urbana-Champaign

A Tale of Two Particles

A coherent beam of 1.937 eV photons is incident on a double slit. A screen is L = 1.8 m away from the source and the width of each slit is a = .010 mm. This creates an interference/diffraction pattern such that the second interference maxima is y2 = 46 mm from the center line.

If we wanted to duplicate this interference/diffraction pattern with monoenergetic electrons of mass me = 9*10-31 kg,
what would the kinetic energy of one of these electrons have to be? eV