Results 11 to 20 of about 1,888 (180)
A simplified analysis of the Chernobyl accident
EPJ Nuclear Sciences & Technologies, 2021 We show with simplified numerical models, that for the kind of RBMK operated in Chernobyl: The core was unstable due to its large size and to its weak power counter-reaction coefficient, so that the power of the reactor was not easy to control even with
Mercier Bertrand +3 more
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Study of high-order harmonic generation in xenon based on time-dependent density-functional theory
New Journal of Physics, 2021 The high-order harmonic generation (HHG) in xenon is studied by using the time-dependent density-functional theory. The dynamics of all electrons on the outer 4th and 5th atomic shells is considered with subsequent separation of contributions of ...
A A Romanov +4 more
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Nuclear Engineering and Technology, 2015 One of the most important operations in nuclear power plants is load following, in which an imbalance of axial power distribution induces xenon oscillations. These oscillations must be maintained within acceptable limits otherwise the nuclear power plant
Gholam Reza Ansarifar, Saeed Saadatzi
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High harmonic generations by laser in xenon clusters
AIP Advances, 2020 Surface plasmon resonance enhanced high harmonic generation of intense short pulse lasers in xenon clusters is investigated. A laser prepulse partially ionizes the cluster atoms, turning them into plasma balls. As the main pulse arrives, plasma electrons
Nafis Ahmad, A. M. Alshehri, A. Ibrahim
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Analysis of Xenon Oscillation by Coupled Reactor Model [PDF]
Journal of Nuclear Science and Technology, 1982 Two-point coupled reactor equations are derived for the analysis of stability of xenon oscillation of coupled thermal reactor by the nodal method with use of Green's function. A simple formula for the stability criteria is obtained as a function of coupling coefficient. As coupling coefficient becomes smaller, xenon oscillation becomes more unstable as
KOBAYASHI, Keisuke, YOSHIKUNI, Masaaki
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An analysis of the “Fast” noise measurements of the dynamic VVER processes [PDF]
Nuclear Energy and TechnologyStudies of maneuverable modes of VVER to confirm the possibility of participation of nuclear power plants in the mode of daily carrying capacity have been conducted for quite a long time. Tests at various nuclear power plants with VVER-1000 (Zaporizhzhia
Gennady V. Arkadov +2 more
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Stabilization effect of fission source in coupled Monte Carlo simulations
Nuclear Engineering and Technology, 2017 A fission source can act as a stabilization element in coupled Monte Carlo simulations. We have observed this while studying numerical instabilities in nonlinear steady-state simulations performed by a Monte Carlo criticality solver that is coupled to a ...
Börge Olsen, Jan Dufek
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Continuous Guidance Procedure for Xenon Oscillation Control [PDF]
Journal of Nuclear Science and Technology, 1995 A new concept for the control of axial xenon oscillations in large PWRs has been proved to be effective. The concept is based on two additional newly defined axial offsets, AOi and AOx together with the conventional axial offset of power distribution AOp.
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Elucidating Photo‐Kinetic Control in Photothermal Reverse Water‐Gas Shift Reaction
Angewandte Chemie, EarlyView.Light directly regulates the rate‐determining step (RDS) in photothermal catalysis. In a Mars–van Krevelen (MvK)‐type reverse water‐gas shift (RWGS) reaction over In‐doped MoO2, light shifts the RDS from the H2‐related reduction half‐reaction to the CO2‐related oxidation half‐reaction, enhancing catalytic activity and lowering the apparent activation ...
Junchuan Sun +13 more
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Nuclear Energy and Technology, 2015 This paper considers aspects of a program for training future nuclear power plant personnel developed by the NPP Department of Ivanovo State Power Engineering University jointly with the Kalinin NPP. The program components include application of computer
V.K. Semenov +2 more
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