Results 141 to 150 of about 1,888 (180)

Space Dependent Xenon Oscillations

Nuclear Science and Engineering, 1962
The effect of xenon and temperature on reactor dynamics in a free system is extended to include an explicit spatial dependence.
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Control of Xenon Spatial Oscillations

Nuclear Science and Engineering, 1969
The problem of optimally controlling xenon spatial oscillations is formulated as a problem in the calculus of variations for distributed parameter systems.
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Xenon Oscillations in Finite Reactors

Nuclear Science and Engineering, 1963
The threshold conditions for Xe oscillations in bare parallelepipeds and cylinders are determined, starting from the threshold conditions for Xe oscillations in a onedimensional slab reactor. The case of nonuniform composition in the parallelepiped is discussed. (T.F.H.)
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Hybrid computer simulation of xenon spatial oscillations

SIMULATION, 1970
This paper is concerned with a hybrid computer simulation of the space-time xenon oscillation problem. Such prob lems are important in large thermal nuclear power reactors. The basic nuclear reaction is modeled by three slightly nonlinear partial differential equations-a diffusion equa tion describing the neutron flux concentration ...
M.J. Wozny, P.S. Bartells, R.E. Bailey
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Quasistatic control of xenon spatial oscillations†

International Journal of Systems Science, 1975
Control of quasistatic distributed parameter (d.p.) systems is considered in this paper. Singular perturbation techniques and calculus of variations are the main tools employed to achieve a control procedure consisting of two iterative schemes. The procedure is applied to control the xenon oscillations found in large thermal nuclear reactors.
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Oscillator Strengths of the Resonance Lines of Krypton and Xenon*

Journal of the Optical Society of America, 1969
The oscillator strengths of the 1S0–1P1 (1165 A) and the 1S0–3P1 (1236 A) resonance transitions in krypton and the 1S0–1P1 (1296 A) resonance transition in xenon were determined by the method of total absorption. A 2-m absorbing path and pressures in the range of 0.006–0.064 torr were used.
P. M. Griffin, J. W. Hutcherson
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Analysis of the effects of xenon oscillation on reactor power

2019 7th International Youth Conference on Energy (IYCE), 2019
Xenon oscillation is an important phenomena at nuclear power plants with great built-in power capacity. In this mechanism the concentration of the xenon nuclei is changing significantly and not evenly depending on time and space during the chain reaction.
Zsófia Tóth, Dániel Péter Kis
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A Method for Solving the Xenon Oscillation Control Problem

Nuclear Science and Engineering, 1979
Large-size nuclear power reactors are subjected to dynamic problems that can be formulated using modern control theory. The problem considered is a power oscillation caused by the presence of a fission product. /sup 135/Xe, which is formed when the nuclear fuel undergoes fission. The application of control theory leads to a mixed boundary value problem.
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The effect of xenon oscillations

Soviet Atomic Energy, 1969
G. P. Gushchin, I. S. Postnikov, E. F. Sabaev   +2 more
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EFFECT OF INTERMODAL INTERACTION ON STABILITY CHARACTERISTICS OF SPATIAL XENON OSCILLATIONS IN PHWRS

The Proceedings of the International Conference on Nuclear Engineering (ICONE), 2023
Suneet Singh
exaly