Author: Michael Jay Lineberry
Publisher:
ISBN:
Category : Electronic dissertations
Languages : en
Pages : 244
Book Description
The emphasis in reactor physics research has shifted toward investigations of fast reactors. The effects of high energy neutron processes have thus become fundamental to our understanding, and one of the most important of these processes is nuclear inelastic scattering. In this research we include inelastic scattering as a primary energy transfer mechanism, and study the resultant neutron energy spectrum in an infinite medium. We assume that the moderator material has a high mass number, so that in a laboratory coordinate system the energy loss of an inelastically scattered neutron may be taken as discrete. It is then consistent to treat elastic scattering with an age theory expansion. Mathematically these assumptions lead to balance equations of the differential-difference type. The steady state problem is explored first by way of Laplace transformation of the energy variable. We then develop another steady state technique, valid for multiple inelastic level excitations, which depends on the level structure satisfying a physically reasonable constraint. In all cases the solutions we generate are compared with results obtained by modeling inelastic scattering with a separable, evaporative kernel. The time dependent problem presents some new difficulties. By modeling the elastic scattering cross section in a particular way, we generate solutions to this more interesting problem. We conjecture the method of characteristics may be useful in analyzing time dependent problems with general cross sections. These ideas are briefly explored.
Neutron Slowing Down with Inelastic Scattering
A Measurement of Neutron Slowing-down Area in Light Water
Author: T. Naganuma
Publisher:
ISBN:
Category : Light water reactors
Languages : en
Pages : 18
Book Description
Publisher:
ISBN:
Category : Light water reactors
Languages : en
Pages : 18
Book Description
The Theory of Neutron Slowing Down in Nuclear Reactors
Author: Joel H. Ferziger
Publisher: Elsevier
ISBN: 1483154998
Category : Science
Languages : en
Pages : 321
Book Description
The Theory of Neutron Slowing Down in Nuclear Reactors focuses on one facet of nuclear reactor design: the slowing down (or moderation) of neutrons from the high energies with which they are born in fission to the energies at which they are ultimately absorbed. In conjunction with the study of neutron moderation, calculations of reactor criticality are presented. A mathematical description of the slowing-down process is given, with particular emphasis on the problems encountered in the design of thermal reactors. This volume is comprised of four chapters and begins by considering the problems of neutron moderation and their importance in all types of reactors. An asymptotic reactor model is described, and the calculation of the elastic scattering frequency is explained. Subsequent chapters focus on the process of slowing down in finite and infinite medium by analyzing capture by individual resonances; resonance integrals in heterogeneous systems; the slowing-down kernels; the spherical harmonics method; statistical methods; and small source theory. The final chapter presents numerical solutions of the Boltzmann equation and covers topics such as the multigroup approach, group constants, and solution of the multigroup equations. This book will be a useful resource for nuclear physicists and engineers.
Publisher: Elsevier
ISBN: 1483154998
Category : Science
Languages : en
Pages : 321
Book Description
The Theory of Neutron Slowing Down in Nuclear Reactors focuses on one facet of nuclear reactor design: the slowing down (or moderation) of neutrons from the high energies with which they are born in fission to the energies at which they are ultimately absorbed. In conjunction with the study of neutron moderation, calculations of reactor criticality are presented. A mathematical description of the slowing-down process is given, with particular emphasis on the problems encountered in the design of thermal reactors. This volume is comprised of four chapters and begins by considering the problems of neutron moderation and their importance in all types of reactors. An asymptotic reactor model is described, and the calculation of the elastic scattering frequency is explained. Subsequent chapters focus on the process of slowing down in finite and infinite medium by analyzing capture by individual resonances; resonance integrals in heterogeneous systems; the slowing-down kernels; the spherical harmonics method; statistical methods; and small source theory. The final chapter presents numerical solutions of the Boltzmann equation and covers topics such as the multigroup approach, group constants, and solution of the multigroup equations. This book will be a useful resource for nuclear physicists and engineers.
Neutron Slowing Down in Group Diffusion Theory
Author: Robert Linton Hellens
Publisher:
ISBN:
Category : Diffusion
Languages : en
Pages : 178
Book Description
Publisher:
ISBN:
Category : Diffusion
Languages : en
Pages : 178
Book Description
Slow Neutron Scattering and Thermalization, with Reactor Applications
Author: Donald E. Parks
Publisher: Addison Wesley Longman
ISBN:
Category : Science
Languages : en
Pages : 852
Book Description
Publisher: Addison Wesley Longman
ISBN:
Category : Science
Languages : en
Pages : 852
Book Description
Compilation of Resolutions and Intensities of Slow Neutron, Inelastic Scattering, Time-of-flight Instruments
Author: Robert M. Brugger
Publisher:
ISBN:
Category : Inelastic scattering
Languages : en
Pages : 50
Book Description
Publisher:
ISBN:
Category : Inelastic scattering
Languages : en
Pages : 50
Book Description
The Slowing Down and Thermalization of Neutrons
Author: Michael Maurice Rudolph Williams
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 722
Book Description
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 722
Book Description
Anisotropic Elastic Scattering Neutrons
Author: C. M. Copenhaver
Publisher:
ISBN:
Category : Elastic scattering
Languages : en
Pages : 28
Book Description
Publisher:
ISBN:
Category : Elastic scattering
Languages : en
Pages : 28
Book Description
Elements of Slow-Neutron Scattering
Author: J. M. Carpenter
Publisher: Cambridge University Press
ISBN: 0521857813
Category : Science
Languages : en
Pages : 539
Book Description
This book provides a comprehensive and up-to-date introduction to the fundamental theory and applications of slow-neutron scattering.
Publisher: Cambridge University Press
ISBN: 0521857813
Category : Science
Languages : en
Pages : 539
Book Description
This book provides a comprehensive and up-to-date introduction to the fundamental theory and applications of slow-neutron scattering.
The Inelastic Scattering of Slow Neutrons
Author: Robert Weinstock
Publisher:
ISBN:
Category :
Languages : en
Pages : 178
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 178
Book Description