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Integral Reaction Rates and Neutron Energy Spectra in a Well Moderated Reactor

Description: Cadmium ratio measurements in the internal reflector of MOATA have been made with gold, indium, tungsten, manganese, molybdenum, and copper detectors. These measurements have been analyzed on the assumption that the neutron spectrum consists of a Maxwellian distribution to which is smoothly joined a 1/E slowing down spectrum cross sections being averaged according to the methods of Westcott. A search through recent literature suggests that the factors for gold and indium listed by Westcott are … more
Date: April 1963
Creator: Connolly, J. W.; Rose, A. & Wall, T.
Partner: UNT Libraries Government Documents Department
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A 1620 FORTRAN Programme for the Calculation of Bragg Angles for use in Powder X-Ray Diffraction Investigations

Description: An IBM 1620 program is described that calculates the Bragg angles for cubic, hexagonal, and tetragonal crystal systems for use with powder x-ray diffraction techniques. Allowance is made for absent reflections in the case of face- and body-centered cubic and close-packed hexagonal materials.
Date: April 1963
Creator: Walker, D. G.
Partner: UNT Libraries Government Documents Department
open access

A 1620 FORTRAN Programme for the Refinement of Lattice Parameters by a Modified Least Squares Method

Description: An I.B.M. 1620 programme is described which calculates refined lattice parameters from X-ray diffraction data according to Hess' Method. The programme may be used for cubic, hexagonal, and tetragonal systems and three systematic error functions are included. The output includes the refined parameters their stand errors, and the misfit of the data at each experimental point.
Date: April 1963
Creator: Walker, D. G.
Partner: UNT Libraries Government Documents Department
open access

A Cryostat for Temperature Control in the Range from Ambient to - 150 degrees C

Description: This note describes a simple cryostatic device, which, by utilizing the latent heat of vaporization of liquid nitrogen, enables accurate control of temperature between ambient and - 150 degrees C. The advantages of this cryostat over other models known are simplicity of design and operation, ability to operate accurately from ambient to - 150 degrees C, economy, and large working space.
Date: April 1963
Creator: Roman, D.
Partner: UNT Libraries Government Documents Department
open access

A Relocatable Assembly System for the I.B.M. 1620 Computer

Description: The indirect addressing feature of the I.B.M.1620 computer has been used to overcome the difficulty of cross—referencing separately assembled subroutines within a computer programme. A relocatable assembler has been devised which permits the separate assembly and testing of such subroutines. The concept of a "next subroutine" has been introduced, and its applications to interpretive systems such as Fortran shown.
Date: April 1962
Creator: Richardson, D.J.
Partner: UNT Libraries Government Documents Department
open access

Purification of Carbon Dioxide for Reactor Purposes. Part III, Drying

Description: Comparison of the adsorption characteristics of the desiccants silica gel, alumina, and molecular sieves has shown that molecular sieves have by far the greatest capacity of the desiccants at the low partial pressures considered. Equilibrium data in the form of isotherms were established over the range of variables expected in the coolant circuit of a proposed Australian H.T.G.C. reactor. The mass transfer from the gas phase to molecular sieves is such that no correlation could be attempted for… more
Date: April 1962
Creator: Draycott, A. & Kerr, A. C.
Partner: UNT Libraries Government Documents Department
open access

Theory and Application of the Double P(N) Method in Slab Geometry for Isotropic Neutron Sources and Scattering

Description: A simple matrix formalism is developed to facilitate the application of the double PN method of spherical harmonics to multiple slab configurations, representative of some of the basic neutron transport problems in the theory of nuclear reactors. Special attention is given to the double P2 and P3 approximations, and the results of numerical computations are compared with known accurate results.
Date: April 1963
Creator: Thompson. J. J.
Partner: UNT Libraries Government Documents Department
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