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Revista Mexicana de Física

Efectos transitorios en la dispersión causada por una esfera rígida

M. Moshińsky

Published May 10, 2009• 5 citations
OpenAlex

Abstract

IN THE PRESENT PAPER WE DISCUSS THE TRANSIENTS EFFECTS ASSOCIATED WITH THE DISPERSION BY AN IMPENETRABLE SPHERICAL POTENTIAL. THESES TRANSIENT EFFECTS ARE COMPARED WITH THOSE THAT APPEAR IN THE SINGLE LEVEL SCATTERING PROCESS, AND THEIR RELEVANCE TO THE TIME-ENERGY UNCERTAINTY RELATION IS ALSO DISCUSSED.

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MOSHINSKY´S RESULTS ON ”DIFFRACTION IN TIME” ARE EXTENDED TO THE CASE OF A RECTANGULAR PULSE.BESIDES INTERFERENCE EFFECTS OF THE TYPE STUDIED BY MOSHINSKY, THERE APPEARS ALSO THE WELL KNOWN QUANTUM MECHANICAL SPREADING EFFECT. RISE TIME AND MONOCHROMATICITY REQUIREMENTS SEEM TO PRECLUDE THE POSSIBILITY OF EXPERIMENTAL OBSEVATION OF THE INTERFERENCE EFFECTS, SO THAT THEY NEED NOT BE TAKEN ACCOUNT IN NEUTRON VELOCITY SELECTORS. THE DETECTION OF THE SPREADING, WICH IS SUBJECT TO WEAKER REQUIREMENTS WOULD PROVIDE A DIRECT TEST OF THE UNCERTAINTY RELATION.