Atomic And Nuclear Physics

15

Nuclear Reactions with Neutrons

THIS CHAPTER COVERS…

• The neutron reactions, fission, fissionable and fertile materials.

• The neutron yield and mass distribution of fission fragments.

• The energy distribution of fission fragments, types of neutrons i.e. prompt and delayed and moderation of neutrons by elastic collisions.

• The equations in center of mass and lab coordinates.

• Various parameters like energy decrement, slowing down density and time, resonance escape probability and effective resonance integral.

• Thermal neutrons and diffusion equation.

• The neutron scattering from ortho and para-hydrogen molecules.

15.1 INTRODUCTION

Neutron plays a central role in nuclear fission. Having no electric charge, it is not affected by the presence of ...