Search results for "Half cycle"

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Comments on “Mean velocity and turbulent characteristics of flow over half-cycle cosine sharp-crested weirs” by Salehi S., Esmaili K., Azimi A.H.

2019

Abstract In this paper the stage-discharge equation of a half-cycle cosine weir is theoretically deduced applying the Π-Theorem of dimensional analysis and the self-similarity theory. The coefficients of the new stage-discharge relationships are estimated using the results of the experimental runs by Salehi et al..

Dimensional analysiSelf-similarityHalf cycleTurbulenceMathematical analysis0207 environmental engineering02 engineering and technologySharp-crested weirs01 natural sciencesFlow measurementComputer Science ApplicationsFlow measurementSelf-similarity010309 opticsFlow (mathematics)Physics::Plasma PhysicsModeling and SimulationCosine weir0103 physical sciencesWeirTrigonometric functionsElectrical and Electronic Engineering020701 environmental engineeringInstrumentationMathematicsFlow Measurement and Instrumentation
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Excitation and ionization of Rydberg atoms by short half-cycle pulses

1999

Simple semiclassical formulas are derived for the probability of excitation and ionization of Rydberg atoms irradiated by a half-cycle pulse whose duration is shorter than the Kepler period. The calculated ionization probabilities are in good agreement with the experimental data of Jones, You, and Bucksbaum [Phys. Rev. Lett. 70, 1236 (1993)] and with previous calculations.

PhysicsPeriod (periodic table)Half cycleIonizationRydberg atomSemiclassical physicsPhysics::Atomic PhysicsIrradiationAtomic physicsAtomic and Molecular Physics and OpticsExcitationPulse (physics)Physical Review A
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