Summary and Info
This book arose from some lectures given in Cambridge in 1973 at a Summer School organized by the Neutron Scattering Group of the Institute of Physics and the Faraday Society. It is intended for experi- menters in the field of thermal neutron scattering who wish to see the theoretical ideas developed in a not too formal manner. But I hope it may be of interest to students and research workers in related fields. I assume no previous knowledge of the theory of thermal neutron scattering, but a familiarity with the basic concepts of quantum mechanics and solid state physics is necessary for a proper under- standing of the text. The required results in these subjects are sum- marized in appendices. The latter also contain proofs of some of the mathematical results. Some problem examples have been given at the ends of chapters. They are intended to illustrate the text, and the reader is advised to glance at them even if he is not inclined to try to solve them. Their purpose is partly, as with some of the appendices, to remove some mathematical material from the main body of the text, and partly, to stimulate the reader to a more active understanding of the subject. Thermal neutron scattering is being applied in more and more areas of science. But this book does not attempt to cover the theory of all the applications. Instead I have confined myself to the basic ideas of the theory. My aim is to bring the reader to the point where he can tackle the theoretical expositions of the specialized branches given in more advanced textbooks and in theoretical papers. It is a pleasure to thank Mr Cole, Dr Dore, Dr Howie, Professor Joannopoulos, Dr de Vallera, and Dr Zeilinger for reading parts of the manuscript and making useful comments.