ANGULAR DISTRIBUTION OF FAST PHOTONEUTRONS

Abstract
The angular distributions and the yields of the high-energy neutrons emitted in photodisintegration have been studied by silicon detectors (25 elements) and aluminum detectors (6 elements). With the silicon detectors systematic variations are apparent in the coefficient a2 of W(θ) = a0(P0 + a2P2), and these variations are interpreted in terms of the Wilkinson shell model of photonuclear reactions.