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in subjects: "Perturbation Theory"  
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An Analogue Solution of a Reactor Perturbation Initiated by a Metallurgical Phase Transformation of the Fuel

Description: The analysis of a reactor model that is thermally nonlinear is presented. The significant sources of feadback in the closed-loop model ane dilatational changes of the fuel due to axial expansion caused by temperature and metallurgical phase changes. Ths dynamics of this phenomenon has been represented on the Pace electronic analog com puter. The model was subjected to unusually large inputs of sinusoidal power and did not show any drastic tendencies toward being unstable. (auth)
Date: January 1, 1961
Creator: Bryant, L. T.; Carter, J. C. & Janicke, M. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

WHIRLAWAY--A THREE-DIMENSIONAL, TWO-GROUP NEUTRON DIFFUSION CODE FOR THE IBM 7090 COMPUTER

Description: WHIRLAWAY is an IBM 7090 FORTRAN programmed code for the solution of two- group neutron diffusion equations in xyz geometry. The code was designed to run under control of the IBM 7090 FORTRAN Monitor System on a machine with at least six tape units. The maximum number of mesh points is limited to 12,750. Arbitrary distributions of materials and mesh spacing are permitted. The boundary conditions are either zero flux or zero current at each of the six faces of the reactor, and the code will, if … more
Date: August 15, 1961
Creator: Fowler, T. B. & Tobias, M. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Electronuclear Research Division Annual Progress Report for Period Ending January 16, 1961

Description: Research with 28-Mev N/sup 3+/ ions from the ORNL 63-Inch Cyclotron included studies of elastic and inelastic scattering, of angular distributions from transfer reactions, and of nuclear reactions resulting in the evaporation of alpha particles and protons. The research program associated with the 22-Mev protons from the ORNL 86-Inch Dyclotron lncluded studies of bound states of neutrons, the investigation of energy levels in neutron-deficient rareearth nuclei, and the production of neutron-def… more
Date: April 1, 1961
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

REACTOR PHYSICS STUDIES FOR THE FINAL CONCEPTUAL DESIGN OF THE ADVANCED TEST REACTOR

Description: A detailed account of the reactor physics studies for the final conceptual design of the Advanced Test Reactor is presented. The diffusion theory methods used for calculations of flux distributions and reactivity effects are described and compared with measurements and with higher order approximations to transport theory. These comparisons show diffusion theory to be adequate for the ATR conceptual design. Two-dimensional flux distributions for a number of shim control conditions and experiment… more
Date: March 24, 1961
Creator: Marsden, R.S. ed.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Plasma Stability Analysis Employing Equilibrium Constants of Motion

Description: A first step in analyzing the stability of solutions of the Vlasov equation governing hot plasmas of low density is to solve the linearized equation for the perturbed space and velccity distribution function in terms of the perturbed electric and magnetic fields. An explicit Green's function solution for the distribution is presented and two examples of its use are given. The Green's function is found by first transforming to equilibrium constants of motion as variables. (auth)
Date: June 1, 1961
Creator: Fowler, T. K.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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