Author: Robert J. Howerton
Publisher:
ISBN:
Category : Elastic scattering
Languages : en
Pages : 28
Book Description
The Status of Experimental Neutron Cross Sections for Energies Between 0.5 and 14.5 Mev
Author: Robert J. Howerton
Publisher:
ISBN:
Category : Elastic scattering
Languages : en
Pages : 28
Book Description
Publisher:
ISBN:
Category : Elastic scattering
Languages : en
Pages : 28
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
Nuclear Cross Sections for 95-Mev Neutrons
Author: James DeJuren
Publisher:
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.
Publisher:
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.
Symposium on Neutron Cross-sections from 10 to 50 MeV
Author: M. R. Bhat
Publisher:
ISBN:
Category : Fast neutrons
Languages : en
Pages : 440
Book Description
Publisher:
ISBN:
Category : Fast neutrons
Languages : en
Pages : 440
Book Description
Reports to the AEC Nuclear Cross Sections Advisory Group
Author: A. B. Smith
Publisher:
ISBN:
Category : Cross sections (Nuclear physics)
Languages : en
Pages : 152
Book Description
Publisher:
ISBN:
Category : Cross sections (Nuclear physics)
Languages : en
Pages : 152
Book Description
Reports to the AEC Nuclear Cross Sections Advisory Group
Author:
Publisher:
ISBN:
Category : Nuclear physics
Languages : en
Pages : 42
Book Description
Publisher:
ISBN:
Category : Nuclear physics
Languages : en
Pages : 42
Book Description
Neutron Cross Sections and Related Measurements
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 27
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 27
Book Description
Conference on Neutron Cross Section Technology
Author: P. B. Hemmig
Publisher:
ISBN:
Category : Neutron cross sections
Languages : en
Pages : 564
Book Description
Publisher:
ISBN:
Category : Neutron cross sections
Languages : en
Pages : 564
Book Description
Status of High Energy Neutron Cross Sections
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Review is presented of the current status of neutron-induced reactions of interest to the fusion community in the 10- to 50-MeV neutron energy range. Although there has been significant activity in this area since the 1977 BNL Symposium on Neutron Cross Sections from 10 to 40 MeV, this review concludes that there are many areas which require more experimentation to obtain the requested accuracy. Examples of various neutron data obtained since 1977 are presented and compared to determine the extent of agreement. An attempt is made to determine what the prospects are for satisfying the fusion data needs defined by the US DOE based upon progress to date.
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Review is presented of the current status of neutron-induced reactions of interest to the fusion community in the 10- to 50-MeV neutron energy range. Although there has been significant activity in this area since the 1977 BNL Symposium on Neutron Cross Sections from 10 to 40 MeV, this review concludes that there are many areas which require more experimentation to obtain the requested accuracy. Examples of various neutron data obtained since 1977 are presented and compared to determine the extent of agreement. An attempt is made to determine what the prospects are for satisfying the fusion data needs defined by the US DOE based upon progress to date.
Tables of Effective Neutron Cross Sections in Water Moderated Reactors
Author: H. Dean Brown
Publisher:
ISBN:
Category : Neutron cross sections
Languages : en
Pages : 40
Book Description
Publisher:
ISBN:
Category : Neutron cross sections
Languages : en
Pages : 40
Book Description