Inelastic Neutron Scattering Cross Sections in Several Elements with 15 Mev Neutrons PDF Download
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Author: Suresh C. Mathur
Publisher:
ISBN:
Category :
Languages : en
Pages : 177
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Book Description
To check the inelastic neutron scattering cross sections previously measured, the entire experiment was repeated by use of neutron time-of-flight techniques. In particular, the neutron inelastic scattering cross sections were measured for the following elements with an incident neutron energy of 15 MeV: (1) at 90 deg. for Be, B10, B, C, Mg, Si, Mn, Fe, Co, Ni, Cu, Se, Mo, Cd, W, Pb, Ce, Sb, V, Y and Ti; (2) at scattering angles of 30, 40, 55, 70, 90, and 125 deg. for Be, Co, Mo, Cd and W.A computer code MULTSCAT was developed to obtain the corrections due to multiple scattering of neutrons in the scatterer. This code was compiled in Fortran-63 language for a CDC-1604 computer. The experimental cross sections obtained in the present project were corrected for double scattering by means of the MULTSCAT code. (Author).
Author: Suresh C. Mathur
Publisher:
ISBN:
Category :
Languages : en
Pages : 177
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Book Description
To check the inelastic neutron scattering cross sections previously measured, the entire experiment was repeated by use of neutron time-of-flight techniques. In particular, the neutron inelastic scattering cross sections were measured for the following elements with an incident neutron energy of 15 MeV: (1) at 90 deg. for Be, B10, B, C, Mg, Si, Mn, Fe, Co, Ni, Cu, Se, Mo, Cd, W, Pb, Ce, Sb, V, Y and Ti; (2) at scattering angles of 30, 40, 55, 70, 90, and 125 deg. for Be, Co, Mo, Cd and W.A computer code MULTSCAT was developed to obtain the corrections due to multiple scattering of neutrons in the scatterer. This code was compiled in Fortran-63 language for a CDC-1604 computer. The experimental cross sections obtained in the present project were corrected for double scattering by means of the MULTSCAT code. (Author).
Author: Devereux L. Kavanagh
Publisher:
ISBN:
Category : Neutrons
Languages : en
Pages : 162
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Author: Robert J. Howerton
Publisher:
ISBN:
Category : Elastic scattering
Languages : en
Pages : 28
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Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 1330
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Author: P. B. Hemmig
Publisher:
ISBN:
Category : Neutron cross sections
Languages : en
Pages : 572
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Author:
Publisher:
ISBN:
Category : Fast neutrons
Languages : en
Pages : 34
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Author:
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 198
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Book Description
Author:
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 912
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 113
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Book Description
Measurements of neutron elastic and inelastic scattering and gamma- ray production have been made on several elements with 9.0 and 11.0 MeV incident neutrons. Differential cross sections for N, O, Al, Si, Ca, and Fe are presented and integral cross sections derived from the data are also given.
Author: James DeJuren
Publisher:
ISBN:
Category : Bismuth
Languages : en
Pages : 24
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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.
