Author: Publisher:
ISBN:
Category : Nuclear physics
Languages : en
Pages : 44
Book Description
Reports to the AEC Nuclear Cross Sections Advisory Group
Author: The Determination of Total Cross Sections for Fast Neutrons by a Time of Flight Method
Author: Pieter HuijerPublisher:
ISBN:
Category : Neutrons
Languages : en
Pages : 66
Book Description
Cross Sections and Rate Constants for Ion-molecule Reactions
Author: George GioumousisPublisher:
ISBN:
Category : Cross sections (Nuclear physics)
Languages : en
Pages : 198
Book Description
The importance of ion-neutral reactions is well recognized, especially in the study of the chemistry of upper atmosphere. The first section of the report is concerned with refining the calculation of the cross section from the long-range interactions, assuming an arbitrary classical potential. The cross section so found is not regarded as an approximation to the reaction cross section, but rather the cross section for any sort of significant interaction, that is, the sum of the cross sections for elastic scattering, inelastic scattering, and the various reactions that can occur. The next section is a rigorous analysis of the experiments, based on the kinetic theory of gases, from the point of view of expressing whatever macroscopic parameters the experiment yields in terms of the reaction cross section, which is assumed known as a function of energy. An approximate method is developed which inverts the relationship and yields the reaction cross section as a function of energy if the experimental data are adequate. The final section applied the above-mentioned method to various reactions. This is believed to be the only way to find the cross section as such for ion-neutral reactions in the energy range somewhat above thermal. Some new and unexpected results were found by this method, especially for the H2, Ne reaction. (Author).
Nuclear Cross Sections for Technology
Author: Joseph L. FowlerPublisher:
ISBN:
Category : Cross sections (Nuclear physics)
Languages : en
Pages : 1064
Book Description
Differential Cross Section of the Reaction He3(d, P)He4 at 10.2 Mev Bombarding Energy and Search for Excited State in He4
Author: John C. AllredPublisher:
ISBN:
Category : Cross sections (Nuclear physics)
Languages : en
Pages : 154
Book Description
Nuclear Cross Sections for 95-Mev Neutrons
Author: James DeJurenPublisher:
ISBN:
Category : Bismuth
Languages : en
Pages : 24
Book Description
The total cross sections of twelve different elements were measured using the neutron beam from the 184-in. cyclotron, operating with deuterons. Bismuth fission ionization chambers were employed as both monitor and detector in conventional 'good geometry' attenuation measurements in the neutron flux emerging from the 3-in. diameter collimating port in the 10-ft-thick concrete shielding. The mean energy of detection of the neutrons in this experiment is estimated to be 95 Mev. Measurements were also made with a monitor and detector placed inside the concrete shielding where an intense neutron flux over a large area could be obtained. Attenuators of four different elements were placed in front of the detector in a 'poor geometry' arrangement so that attenuation was due essentially to inelastic collisions which degrade the neutron energy below the fission threshold. A second detector was placed outside the concrete shielding In the collimated neutron beam in line with the neutron source, absorber, and first detector. Attenuation in it is caused by both inelastic and elastic scattering. By this arrangement the ratio of inelastic to total cross section can be determined directly in one experiment. The nuclear radii as calculated from the observed cross section, using the theory of the transparent nucleus, vary as 1.38 x 10(exp-13) A(exp(1/3)) cm. In this energy range the ratios of the inelastic to total cross sections are all less than one-half.
Nuclear Cross Sections and Technology
Author: Roald A. SchrackPublisher:
ISBN:
Category : Cross sections (Nuclear physics)
Languages : en
Pages : 564
Book Description
Total Cross-Section Measurements
Author: G. GiacomelliPublisher: Elsevier
ISBN: 1483181529
Category : Science
Languages : en
Pages : 152
Book Description
Total Cross-Section Measurements discusses the cross-sectional dimensions of elementary hadron collisions. The main coverage of the book is the resonance and high energy area of the given collision. A section of the book explains in detail the characteristic of a resonance region. Another section is focused on the location of the high energy region of collision. Parts of the book define the meaning of resonance in nuclear physics. Also explained are the measurement of resonance and the identification of the area where the resonance originates. Different experimental methods to measure the total cross section of a charged particle are given. One such method is the transmission method. Bubble chamber measurement is another method that is covered in the book. Systems of analysis such as the pion-nucleon system, the K–-nucleon system, and K+- nucleon system are discussed. The book is an excellent guide for nuclear physicists and students of physics.
New Technique for Measuring Photonuclear Cross Sections and Its Application to the Cu63([gamma], N)Cu62 and C12([gamma], N)C11 Reactions
![New Technique for Measuring Photonuclear Cross Sections and Its Application to the Cu63([gamma], N)Cu62 and C12([gamma], N)C11 Reactions PDF](https://books.google.com/books/content/images/frontcover/N7NDouJMKs0C?fife=w80-h100)
Author: Lester L. NewkirkPublisher:
ISBN:
Category : Cross sections (Nuclear physics)
Languages : en
Pages : 60
Book Description
Inelastic Cross Sections for Fission Spectrum Neutrons
Author: Hans Albrecht BethePublisher:
ISBN:
Category : Cross sections (Nuclear physics)
Languages : en
Pages : 132
Book Description