Results 161 to 170 of about 417 (197)

Chemical Kinetics of Bromine Following Neutron Capture

The Journal of Chemical Physics, 1948
The kinetic behavior of Br80 produced by neutron capture has been investigated in gaseous systems containing ethyl bromide, ethylene and hydrogen bromide. The distribution of active bromine between organic and inorganic form has been shown to be principally dependent on the ethylene pressure.
William H. Hamill, Russell R. Williams
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Kinetic neutron diffraction as an aid to processing

Physica B: Condensed Matter, 2004
The development of high intensity neutron sources coupled with improvements in instrumentation has made it possible to collect high quality diffraction patterns extremely rapidly, and studies of the kinetics of solid-state processes in real time are now feasible.
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Neutron inverse kinetics via Gaussian Processes

Annals of Nuclear Energy, 2012
Abstract The paper introduces the application of Gaussian Processes (GPs) to determine the subcriticality level in accelerator-driven systems (ADSs) through the interpretation of pulsed experiment data. ADSs have peculiar kinetic properties due to their special core design. For this reason, classical – inversion techniques based on point kinetic (PK)
Paolo Picca, Roberto Furfaro
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Current-Biased Kinetic Inductance Detector for Neutrons

2015 15th International Superconductive Electronics Conference (ISEC), 2015
We succeeded in measuring a clear signal from a single neutron by using a solid state superconducting current biased kinetic inductance detector, which consists of a superconducting Nb meanderline and an enriched 10B neutron conversion layer. Our neutron detector is able to operate at temperatures much lower than Tc.
Hiroaki Shishido, Shigeyuki Miyajima, Mutsuo Hidaka, Hiroyuki Yamaguchi, Hirotaka Nakayama, Yoshito Narukami, Ken'ichi Oikawa, Masahide Harada, Takayuki Oku, Masatoshi Arai, Akira Fujimaki, Takekazu Ishida   +11 more
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Kinetic diffusion equation in neutron transport theory

Atomic Energy, 2013
The neutron transport equation can be expressed in a form identical to that of the diffusion equation in the elementary theory of diffusion. The kinetic equation expressed in such a form is defined as the kinetic diffusion equation. The kinetic diffusion equation in a one-dimensional planar geometry is derived and physical validation is given for the ...
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Derivation of Kinetic Equations for Slow-Neutron Scattering

Physical Review, 1965
It is shown that for moderately dense classical gases Van Hove's correlation functions $G(r, t)$ and ${G}_{s}(r, t)$ can be calculated from kinetic equations. The kinetic equations are derived from the cluster expansion of a one-particle distribution function which describes the propagation of a density-momentum impulse.
J. M. J. Van Leeuwen, Sidney Yip
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The Controllability of the Point Reactor Neutron Kinetics Equations

Volume 6: Nuclear Education, Public Acceptance and Related Issues; Instrumentation and Controls (I&C); Fusion Engineering; Beyond Design Basis Events, 2014
In this paper, the conditions to ensure the controllability of the point reactor neutron kinetics equations are studied. In a nuclear reactor, due to the delayed neutron precursor concentration and the internal reactivity, the kinetics equations of the nuclear reactor are nonlinear. To solve the problem of the pole placement, the controllability of the
Dong Liu, Xiuchun Luan, Tao Yu, Weining Zhao, Lei Liu   +4 more
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Delayed Neutron and Nuclear Reactor Kinetics

2012
Introduction Reactor power changes when the temperature and position of the control rods of a nuclear reactor are changed. This change is unique to each reactor, and its characteristics are called “nuclear reactor kinetics.”
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Neutron spectrum kinetics in the infinite homogeneous reactor

Annals of Nuclear Energy, 2015
Abstract An analysis of the behaviour of the neutron spectrum in transient condition, based on an extension of the inhour equation to the energy dimension, is presented. This approach enables to describe the spectrum evolution in time as a combination of eigenstates associated to the roots of the inhour equation.
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Aspects in the use of the inverse neutron kinetics technique

Nuclear Instruments and Methods, 1972
Abstract Sources of error arising in the analysis of rapidly and slowly varied reactivities using the inverse neutron kinetics technique are discussed and demonstrated by experiments.
L. Anselmi, W. Hage, H. Hettinger, H. Hohmann, S. Kumpf   +4 more
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