On the interaction between neutrons and electrons
Technical Information Division, Oak Ridge Directed Operations, 1947 - Science - 24 pages
The possible existence of a potential interaction between neutron and electron has been investigated by examining the asymmetry of thermal neutron scattering from xenon. It has been found that the scattering in the center-of-gravity system shows exceedingly little asymmetry. By assuming an interaction of a range equal to the classical electron radius, the depth of the potential well has been found to be 300±5000 ev. This result is compared with estimates based on the mesotron theory according to which the depth should be 12000 ev. It is concluded that the interaction is not larger than that expected from the mesotron theory; that, however, no definite contradiction of the mesotron theory can be drawn at present, partly because of the possibility that the experimental error may have been understimated, and partly because of the indefiniteness of the theories which makes the theoretical estimate uncertain.
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apparatus Argonne National Laboratory assumption asymmetry average beam of thermal bound in closed cadmium calculate center of gravity closer discussion shows COPPER SCATTERER correction due correction factors counter Cg cross-section of xenon depth diameter directions at 45 electric field surrounding electron system enter through window estimate expected experimental error experimental result filled with xenon form factor Geometrical Corrections gravity system interaction between neutron magnetic interaction mean square error mesotron mass mesotron theory negative mesotron neutron and electron neutron MDDC neutron proper neutron-electron neutrons scattered nuclear Interaction constants nucleon nucleus number of counts order of magnitude particles perturbation position potential energy potential hole Prom proton and negative range potential interaction ratio scattering angles 45 scattering atoms scattering cross-section scattering of neutrons short range potential side of Equation solid angle spherically symmetrical wave surrounding the neutron THERMAL COLUMN thermal neutrons tine as neutron tron volume integral wave length yes yes