Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Multistep Hauser-Feshbach calculations with preequilibrium corrections were made for neutron-induced reactions on yttrium and zirconium isotopes between 0.001 and 20 MeV. Recently new neutron cross-section data have been measured for unstable isotopes of these elements. These data, along with results from charged-particle simulation of neutron reactions, provide unique opportunities under which to test nuclear-model techniques and parameters in this mass region. A complete and consistent analysis of varied neutron reaction types using input parameters determined independently from additional neutron and charged-particle data. The overall agreement between calculations and a wide variety of experimental results available for these nuclei leads to increased confidence in calculated cross sections made where data are incomplete or lacking. 75 references.
Calculation of Neutron Cross Sections on Isotopes of Yttrium and Zirconium. [Multestep, Hauser-Feshbach Calculations, Pre-equtetrium Corrections, 0. 001 to 20 MeV Tables].
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Multistep Hauser-Feshbach calculations with preequilibrium corrections were made for neutron-induced reactions on yttrium and zirconium isotopes between 0.001 and 20 MeV. Recently new neutron cross-section data have been measured for unstable isotopes of these elements. These data, along with results from charged-particle simulation of neutron reactions, provide unique opportunities under which to test nuclear-model techniques and parameters in this mass region. A complete and consistent analysis of varied neutron reaction types using input parameters determined independently from additional neutron and charged-particle data. The overall agreement between calculations and a wide variety of experimental results available for these nuclei leads to increased confidence in calculated cross sections made where data are incomplete or lacking. 75 references.
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Multistep Hauser-Feshbach calculations with preequilibrium corrections were made for neutron-induced reactions on yttrium and zirconium isotopes between 0.001 and 20 MeV. Recently new neutron cross-section data have been measured for unstable isotopes of these elements. These data, along with results from charged-particle simulation of neutron reactions, provide unique opportunities under which to test nuclear-model techniques and parameters in this mass region. A complete and consistent analysis of varied neutron reaction types using input parameters determined independently from additional neutron and charged-particle data. The overall agreement between calculations and a wide variety of experimental results available for these nuclei leads to increased confidence in calculated cross sections made where data are incomplete or lacking. 75 references.
Energy Research Abstracts
Author:
Publisher:
ISBN:
Category : Power resources
Languages : en
Pages : 340
Book Description
Publisher:
ISBN:
Category : Power resources
Languages : en
Pages : 340
Book Description
Calculation of Neutron Cross Sections on Isotopes of Yttrium and Zirconium
Author:
Publisher:
ISBN:
Category : Neutron cross sections
Languages : en
Pages :
Book Description
Publisher:
ISBN:
Category : Neutron cross sections
Languages : en
Pages :
Book Description
Neutron Cross Section Calculations for Fission-product Nuclei. [0. 001 to 20 MeV, Hauser-Feshbach Theory].
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
To satisfy nuclear data requirements for fission-product nuclei, Hauser-Feshbach statistical calculations with preequilibrium corrections for neutron-induced reactions on isotopes of Se, Kr, Sr, Zr, Mo, Sn, Xe, and Ba between 0.001 and 20 MeV. Spherical neutron optical parameters were determined by simultaneous fits to resonance data and total cross sections. Isospin coefficients appearing in the optical potentials were determined through analysis of the behavior of s- and p-wave strengths as a function of mass for a given Z. Gamma-ray strength functions, determined through fits to stable-isotope capture data, were used in the calculation of capture cross sections and gamma-ray competition to particle emission. The resulting (n, .gamma.), (n, n'), (n,2n), and (n,3n) cross sections, the secondary neutron emission spectra, and angular distributions calculated for 19 fission products will be averaged to provide a resulting ENDF-type fission-product neutronics file. 11 references.
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
To satisfy nuclear data requirements for fission-product nuclei, Hauser-Feshbach statistical calculations with preequilibrium corrections for neutron-induced reactions on isotopes of Se, Kr, Sr, Zr, Mo, Sn, Xe, and Ba between 0.001 and 20 MeV. Spherical neutron optical parameters were determined by simultaneous fits to resonance data and total cross sections. Isospin coefficients appearing in the optical potentials were determined through analysis of the behavior of s- and p-wave strengths as a function of mass for a given Z. Gamma-ray strength functions, determined through fits to stable-isotope capture data, were used in the calculation of capture cross sections and gamma-ray competition to particle emission. The resulting (n, .gamma.), (n, n'), (n,2n), and (n,3n) cross sections, the secondary neutron emission spectra, and angular distributions calculated for 19 fission products will be averaged to provide a resulting ENDF-type fission-product neutronics file. 11 references.
Neutron Cross Sections for Titanium, Potassium, Magnesium, Nitrogen, Aluminum, Silicon, Sodium, Oxygen, and Manganese
Author:
Publisher:
ISBN:
Category : Neutron cross sections
Languages : en
Pages : 150
Book Description
Publisher:
ISBN:
Category : Neutron cross sections
Languages : en
Pages : 150
Book Description
Neutron Cross Sections and Technology
Author: David T. Goldman
Publisher:
ISBN:
Category : Neutron cross sections
Languages : en
Pages : 736
Book Description
Publisher:
ISBN:
Category : Neutron cross sections
Languages : en
Pages : 736
Book Description
Neutron Cross Sections
Author: S Mughabghab
Publisher: Elsevier
ISBN: 0323142354
Category : Science
Languages : en
Pages : 847
Book Description
Neutron Cross Sections, Volume 1: Neutron Resonance Parameters and Thermal Cross Sections, Part A represents the fourth edition of what was previously known as BNL-325, Neutron Cross Sections, Volume 1. This three-chapter book provides the extensive list of detailed individual resonance parameters for each isotope. The first chapter deals with the thermal cross sections and average resonance parameters, as well as the physics of thermal and resonance neutrons, with particular emphasis on evaluation methods. This chapter also includes tables of standards of capture cross sections and scattering lengths, and commonly used nuclear physics formulas. The second chapter covers the direct or valence capture and the Brink-Axel treatment of electric dipole radiation. These topics are followed by a discussion on spin-dependent scattering lengths that are of interest to solid state. The third chapter describes the Maxwellian 30-keV capture cross sections that are of importance to studies of nucleosynthesis and age of the universe. This chapter also examines the s- and p-wave average radiative widths and gamma-ray strength functions that are required in capture cross section measurements. This book will appeal to nuclear and astrophysicists.
Publisher: Elsevier
ISBN: 0323142354
Category : Science
Languages : en
Pages : 847
Book Description
Neutron Cross Sections, Volume 1: Neutron Resonance Parameters and Thermal Cross Sections, Part A represents the fourth edition of what was previously known as BNL-325, Neutron Cross Sections, Volume 1. This three-chapter book provides the extensive list of detailed individual resonance parameters for each isotope. The first chapter deals with the thermal cross sections and average resonance parameters, as well as the physics of thermal and resonance neutrons, with particular emphasis on evaluation methods. This chapter also includes tables of standards of capture cross sections and scattering lengths, and commonly used nuclear physics formulas. The second chapter covers the direct or valence capture and the Brink-Axel treatment of electric dipole radiation. These topics are followed by a discussion on spin-dependent scattering lengths that are of interest to solid state. The third chapter describes the Maxwellian 30-keV capture cross sections that are of importance to studies of nucleosynthesis and age of the universe. This chapter also examines the s- and p-wave average radiative widths and gamma-ray strength functions that are required in capture cross section measurements. This book will appeal to nuclear and astrophysicists.
Neutron Cross Sections
Author: Donald James Hughes
Publisher:
ISBN:
Category : Neutron cross sections
Languages : en
Pages : 444
Book Description
Publisher:
ISBN:
Category : Neutron cross sections
Languages : en
Pages : 444
Book Description
Neutron Cross Sections
Author: Donald James Hughes
Publisher:
ISBN:
Category : Neutron cross sections
Languages : en
Pages : 446
Book Description
Publisher:
ISBN:
Category : Neutron cross sections
Languages : en
Pages : 446
Book Description
Thermal Neutron Capture Cross Sections of Isotopes
Author: H. Pomerance
Publisher:
ISBN:
Category : Cross sections
Languages : en
Pages : 32
Book Description
Publisher:
ISBN:
Category : Cross sections
Languages : en
Pages : 32
Book Description