Nonelastic Scattering Cross Sections for Fast Neutrons

t This research was supported in part by the U. S. Atomic Energy Commission and the Office of Scienti6c Research of the Air Research and Development Command, U. S. Air Force. *On leave from I.aboratoire Leprince-Ringuet, Ecole Polytechnique, Paris. $ On leave from the Weizmann Institute of Science, Rehovoth, Israel. ' Yekutieli, Kaplon, and Hoang, Phys. Rev. 101, 506 (1956). 2 The possibility that we observe an internally converted radiative decay mode of IC„p+—+ p++2e+v is ruled out in the fifth paragraph by the fact that the missing mass is 6nite. 3 The blob density is normalized to that of 1.5-8ev m mesons.