Neutrons and Related Gamma Ray Problems / Neutronen und Verwandte Gammastrahlprobleme

- The Production and Slowing Down of Neutrons
A. Introduction
I. The discovery of the neutron
II. The properties of the neutron as a fundamental particle and its role in nuclear structure
III. General remarks on the interaction of neutrons with matter. The first neutron reactions
IV. The artificial radioactivity. Various reactions produced by neutrons and their general description
V. The effect of hydrogeneous substances. The mechanism of the slowing down of neutrons
VI. A few important properties of slow neutrons and the quantum mechanical representation of processes produced by neutrons
VII. The velocities reached by slow neutrons
VIII. Selective capture of slow neutrons
IX. The main processes involved in the slowing down of neutrons
B. Reactions with emission of neutrons and neutron sources
I. The application of the conservation laws to nuclear reactions
II. The excitation curves of nuclear reactions
III. The (?, n) reactions
IV. The (?, n) reactions
V. The (p, n) reactions
VI. The (d, n) reactions
VII. Neutrons in nature
C. The slowing down of neutrons of energy larger than a few ev
I. General principles and elementary approach to the problem of slowing down of neutrons
II. The integral spectrum of the neutrons during the slowing down in an infinite medium
III. The spatial distribution of neutrons in a medium as a function of the energy
IV. Experimental data on the space and time distributions of the flux of neutrons of energy ? 1 ev in an infinite medium
V. Measurements of integral effects produced by epi-cadmium neutrons
D. Slowing down and diffusion of neutrons in the chemical region, i.e. E less than or of the order of 1 ev
I. Survey of the main features of the problem
II. The scattering of slow neutrons by molecules
III. The scattering of slow neutrons by polycrystalline materials
IV. The slowing down and diffusion of neutrons
E. The diffusion of thermal neutrons
I. General features and mathematical aspects of the diffusion of

Prof. Edoardo Amaldi (5 September 1908 5 December 1989) was an Italian physicist. He graduated under the supervision of Enrico Fermi. After the second world war, Amaldi held the chair of 'General Physics' at the Sapienza University of Rome. He was the co-founder of the Italian National Institute for Nuclear Physics, and of CERN and ESRO. He pioneered the European search for gravitational waves.