AN OPTICAL MODEL STUDY OF NEUTRONS ELASTICALLY SCATTERED BY IRON. NICKEL, COBALT, COPPER, AND INDIUM IN THE ENERGY REGION 1.5 TO 7.0 MeV

摘要

Angular distributions of elastically scattered neutrons have been measured for cobalt and copper at nine energies between 1. 5 and 7. 0 MeV, for natural iron at 4.6 MeV, for natural nickel and indium at four energies between 3.0 and 4.6 MeV, by using time-of-flight technique the observed angular distributions were corrected for neutron flux attenuation, multiple elastic scattering, and the finite geometry of the source-sample-detector system by using a Monte Carlo program.nTheoretical angular distributions have been fitted to the experi¬mental angular distributions by using an optical model potential of the form