Neutron Cross Sections

Neutron Cross Sections

1st Edition - January 1, 1965

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  • Author: Donald J. Hughes
  • eBook ISBN: 9781483282756

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Neutron Cross Sections presents the principles of cross-section measurement and use, as well as sufficient theory so that the general behavior of cross sections is made understandable. This compilation is a direct result of experiences connected with the collection and evaluation of cross-section data during the past eight years at ""Sigma Centre"", Brookhaven National Laboratory. Here, experimental results received from laboratories throughout the world are carefully evaluated and compiled in the curves and tables of the large volume Neutron Cross Sections, The most recent version of the compilation, known as BNL 325, appeared 1 July 1955, and Supplement 1 to BNL 325 was published on 1 January 1957. The compilation itself consists almost completely of cross sections at specific energies, shown in the form of curves or tables, with only brief explanatory texts. The text opens with discussions of the general properties of cross sections and principles of nuclear structure that are important to the understanding of cross-section behavior. Separate chapters follow that describe specific techniques for measuring cross sections along with experimental results involving fast neutrons, resonance neutrons, resonances in fissionable materials, and thermal neutrons.

Table of Contents

  • Preface

    1. Types of Cross Sections and Principles of Measurement

    Simple Definition of Cross Section as Nuclear Area

    Cross-Section Nomenclature

    General Principles of Cross-Section Measurement

    Survey of Experimental Results

    Basic Applications of Cross Sections

    References for Additional Information

    2. Cross Sections and Nuclear Structure

    Radii and Masses of Nuclei

    The Compound Nucleus

    Nuclear Energy Levels

    Quantum-Mechanical Analysis of Cross Sections

    Nuclear Models

    The Black Nucleus

    The Cloudy Crystal Ball

    References for Additional Information

    3. Fast Neutrons

    Sources of Fast Neutrons

    Total Cross Sections—Experimental

    Total Cross Sections and the Cloudy Crystal Ball

    Nonelastic Cross Sections

    Inelastic Scattering

    Reaction Cross Sections

    Angular Distributions

    Cross Sections for Fission Neutrons

    References for Additional Information

    4. Neutron Resonances

    The Breit-Wigner Formula

    Resonance Neutron Sources

    Determination of Resonance Parameters

    Results of Resonance Analysis

    Level Spacings

    Radiation Widths

    Neutron Widths and r0n/D Ratio

    Nuclear Radii

    Applications of Resonance Parameter Data

    References for Additional Information

    5. Resonances in Fissionable Nuclides

    Techniques for Fission Measurements

    Parameters of Fissionable Nuclides




    Theory of Fission Cross Sections

    Applications of Fission Parameters

    References for Additional Information

    6. Thermal Neutrons

    Optics of Slow Neutron Scattering

    Sources of Thermal Neutrons

    Measurements with Maxwell Distribution

    Thermal Cross Sections of Fissionable Nuclides

    Lattice Vibration Scattering

    References for Additional Information

    Appendix 1. Constant and Conversion Factors

    Appendix 2. Atomic Masses of Light Nuclides

    Appendix 3. References for Cross Section Curves


Product details

  • No. of pages: 192
  • Language: English
  • Copyright: © Pergamon 1965
  • Published: January 1, 1965
  • Imprint: Pergamon
  • eBook ISBN: 9781483282756

About the Author

Donald J. Hughes

About the Editors

R. A. Charpie

J. V. Dunworth

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