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Total Cross-Sections of U, UO{sub 2} and ThO{sub 2} for Thermal and Subthermal Neutrons

Abstract

The total neutron cross-sections of U, UO{sub 2} and ThO{sub 2} have been measured from 0.0045 eV to 0.028 eV, using the time-of-flight technique. The samples were measured at 20 deg C. ThO{sub 2} was also measured at 750 deg C. The neutron source was the reactor Rl, Stockholm. The experimental results presented as graphs in the report show in detail the influence of Bragg scattering. The results further show that the increase of the temperature for the ThO{sub 2} sample gives an increase in the cross-section. The work also contains some calculations of the position in energy of Bragg edges for the three materials. These calculations show a very good agreement with the experiments. For uranium metal some calculations have been carried out also for the height ({sigma}{sup g}{sub hkl}) of the edges The agreement with the experiments is reasonable.
Authors:
Beshai, S F [1] 
  1. IAEA-fellow from Atomic Energy Establishment (Egypt)
Publication Date:
Mar 15, 1966
Product Type:
Technical Report
Report Number:
AE-222
Resource Relation:
Other Information: 7 refs., 4 figs., 2 tabs.
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; THERMAL NEUTRONS; TOTAL CROSS SECTIONS; URANIUM; URANIUM DIOXIDE; THORIUM OXIDES; TIME-OF-FLIGHT METHOD
OSTI ID:
20949515
Research Organizations:
AB Atomenergi, Nykoeping (Sweden)
Country of Origin:
Sweden
Language:
English
Other Identifying Numbers:
TRN: SE0708490
Availability:
Commercial reproduction prohibited; OSTI as DE20949515
Submitting Site:
SWDN
Size:
18 pages
Announcement Date:
Dec 15, 2007

Citation Formats

Beshai, S F. Total Cross-Sections of U, UO{sub 2} and ThO{sub 2} for Thermal and Subthermal Neutrons. Sweden: N. p., 1966. Web.
Beshai, S F. Total Cross-Sections of U, UO{sub 2} and ThO{sub 2} for Thermal and Subthermal Neutrons. Sweden.
Beshai, S F. 1966. "Total Cross-Sections of U, UO{sub 2} and ThO{sub 2} for Thermal and Subthermal Neutrons." Sweden.
@misc{etde_20949515,
title = {Total Cross-Sections of U, UO{sub 2} and ThO{sub 2} for Thermal and Subthermal Neutrons}
author = {Beshai, S F}
abstractNote = {The total neutron cross-sections of U, UO{sub 2} and ThO{sub 2} have been measured from 0.0045 eV to 0.028 eV, using the time-of-flight technique. The samples were measured at 20 deg C. ThO{sub 2} was also measured at 750 deg C. The neutron source was the reactor Rl, Stockholm. The experimental results presented as graphs in the report show in detail the influence of Bragg scattering. The results further show that the increase of the temperature for the ThO{sub 2} sample gives an increase in the cross-section. The work also contains some calculations of the position in energy of Bragg edges for the three materials. These calculations show a very good agreement with the experiments. For uranium metal some calculations have been carried out also for the height ({sigma}{sup g}{sub hkl}) of the edges The agreement with the experiments is reasonable.}
place = {Sweden}
year = {1966}
month = {Mar}
}