scholarly journals Observation of the Resonant Character of theZ(4430)−State

2014 ◽  
Vol 112 (22) ◽  
Author(s):  
R. Aaij ◽  
B. Adeva ◽  
M. Adinolfi ◽  
A. Affolder ◽  
Z. Ajaltouni ◽  
...  
Keyword(s):  
Resonant Character

RESONANCE OF NONMODAL PERTURBATIONS IN THE BATCHELOR VORTEX

2010 ◽  
Vol 24 (13) ◽  
pp. 1449-1452
Author(s):  
ZHI-WEI GUO ◽  
DE-JUN SUN
Keyword(s):  
Resonant Mode ◽  
Resonance Phenomenon ◽  
Mode Switch ◽  
Energy Growth ◽  
Optimal Energy ◽  
Maximum Value ◽  
Resonant Character ◽  
Swirl Parameter

The resonance phenomenon for nonmodal perturbation of Batchelor vortex is studied. For azimuthal wavenumber n = - 1, two resonant peaks appear and the left one is always dominant. For n = 1, the resonant character becomes very complicated. There is a resonant mode switch from right peak to left peak as swirl parameter q increases from 2 to infinity. The resonant wavenumber k is the largest when q approaches to infinity for n = - 1 while it is the smallest for n = 1. The maximum value of the optimal energy growth for n = 1 is at q approaches to infinity, whereas it decreases monotonically as q increases for n = - 1. The resonance for n = - 1 is the more important one.

scholarly journals Детектирование терагерцевых электромагнитных волн с помощью проводящих антиферромагнетиков

2021 ◽  
Vol 47 (16) ◽  
pp. 20
Author(s):  
А.Р. Сафин ◽  
Е.Е. Козлова ◽  
Д.В. Калябин ◽  
С.А. Никитов
Keyword(s):  
Heavy Metal ◽  
Constant Voltage ◽  
Antiferromagnetic Resonance ◽  
Spin Pumping ◽  
Wave Detector ◽  
Gunn Diodes ◽  
Resonant Character ◽  
Detector Structure ◽  
Inverse Spin Hall Effect ◽  
Terahertz Signal

We investigate a mathematical model of a terahertz electromagnetic wave detector based on a conducting antiferromagnet and a heavy metal. The mechanism of resonant straightening of oscillations is based on the inverse spin Hall effect in a heavy metal under spin pumping from an antiferromagnet. It is shown that the frequency dependence of the constant voltage of the detector has a resonant character with a peak corresponding to the frequency of antiferromagnetic resonance. The sensitivity to an alternating terahertz signal of the proposed detector structure is comparable to the sensitivity of modern detectors based on Schottky and Gunn diodes.

scholarly journals Analysis of Broadband Antenna Radiation Pulses

2018 ◽  
Vol 22 (1) ◽  
pp. 15-28 ◽  
Author(s):  
Aleksander Cherenkov ◽  
Taras Hutsol ◽  
Igor Garasymchuk ◽  
Jurii Pancyr ◽  
Dmytro Terenov ◽  
...  
Keyword(s):  
Protein Biosynthesis ◽  
Biological Effects ◽  
Pulse Repetition Frequency ◽  
Ultrastructural Changes ◽  
Broadband Antenna ◽  
Resonant Character ◽  
Growth Changes ◽  
Operation Cycle ◽  
Micro Organisms

AbstractElectromagnetic energy can alter metabolic and biosynthetic processes and under certain parameters of pulsed EMF it can change pulse repetition frequency, operation cycle, power, exposure, as well as it can slow down and inhibit cell growth. MW irradiation range of RNA and DNA – containing virus reduces their infectivity. Inhibition of bacterial cultures growth, changes in phagocytic activity of protein biosynthesis, ultrastructural changes in the cells when exposed to EMF EHF. It was found in experiments with micro-organisms that biological effects of EMF on microorganisms wore a resonant character. One of the basic mechanisms of inhibitory action of EHF radiation on harmful microorganisms is the role of membranes in biological reactions of microorganisms on the EMR.

scholarly journals Absolute Photoionization Cross Sections of the Acceptor State Level of Chromium in Indium Phosphide

1985 ◽  
Vol 46 ◽  
Author(s):  
Georges Bremond ◽  
G. Guillot ◽  
A. Nouailhat ◽  
G. Picoli
Keyword(s):  
Indium Phosphide ◽  
Conduction Band ◽  
Cross Section ◽  
Cross Sections ◽  
Selection Rule ◽  
Deep Level ◽  
State Level ◽  
Acceptor State ◽  
Internal Transition ◽  
Resonant Character

AbstractWe have analyzed the photoionization of Cr2+ in InP by the Deep Level Optical Spectroscopy (D.L.O.S.). The σ°n cross section exhibits both a resonant and non resonant character. The former corresponds to the internal transition 5T2-5E of Cr2+ while the threshold of the second allows us to locate the Cr2+/Cr3+ level below the conduction band. The absolute photoionization cross sections towards the two bands are very similar. In particular no selection rule seems to work.

Nonlinear Electrodynamic Effects of the Torch Discharge Argon Plasma

2015 ◽  
Vol 1084 ◽  
pp. 152-157
Author(s):  
Yuriy Lutsenko ◽  
Ivan Miskun ◽  
Ekaterina Zelenetskaya
Keyword(s):  
Electric Field ◽  
Electron Concentration ◽  
High Frequency ◽  
Argon Plasma ◽  
Nonlinear Electrodynamic ◽  
Propagation Process ◽  
Fourth Harmonic ◽  
Torch Discharge ◽  
Resonant Character ◽  
Selective Influence

The measurements of the amplitude-frequency characteristics were done for the high-frequency torch discharge burning in argon. The resonant character of the electric field fourth harmonic attenuation was found. The axial harmonics distribution measurements of the electric field were done for the torch discharge burning in argon-air mixture. The electron concentration in the investigated plasma discharge was evaluated. The selective influence of the change in the electron concentration on the propagation process of the fourth harmonic of the electric field was found.

scholarly journals Optical Absorption and Photoluminescence in the Spherical InP/InSb/InP Core/ shell/ shell Nano Structure

2018 ◽  
Vol 2 (1) ◽  
Keyword(s):  
Incident Light ◽  
Energy Levels ◽  
Charge Carriers ◽  
Oscillator Strengths ◽  
Core Shell ◽  
Photoluminescence Spectra ◽  
Interband Transitions ◽  
Nano Structure ◽  
Resonant Character ◽  
The One

The one particle states of charge carriers are considered in InP/InSb/InPcore/shell/shell spherical quantum nano structure at the regime of strong quantization. The results of numerical calculations for the values of the energy of charge carriers for different values of the thickness of the quantizing layer of InSb are presented. The calculations were performed with allowance for the Kaned is persion for electrons and light holes in the InSb layer. The dependence of the number and position of the energy levels of charge carriers in the quantizing layer of InSb on the width of the well (layer thickness) is shown. The dependence of the absorption coefficient and photoluminescence spectra on the energy of incident light of interband transitions have been investigated. The oscillator strengths and selection rules for these transitions have been obtained. The absorption has a strictly resonant character. By the orbital and azimuthal numbers only diagonal inter band transitions are possible. For the radial number, the transitions between the states with the same radial numbers have the highest intensity

scholarly journals FIELD-INDUCED AXION EMISSION VIA PROCESS e+e-→a IN PLASMA

1998 ◽  
Vol 13 (32) ◽  
pp. 2593-2600 ◽  
Author(s):  
N. V. MIKHEEV ◽  
A. YA. PARKHOMENKO ◽  
L. A. VASSILEVSKAYA
Keyword(s):  
Magnetic Field ◽  
External Magnetic Field ◽  
Intermediate State ◽  
Resonant Character

The annihilation into axion e+e-→a is investigated in a plasma and an external magnetic field. This process via a plasmon intermediate state has a resonant character at a particular energy of the emitted axion. The emissivity by e+e-→a is compared with the axion cyclotron emissivity.

scholarly journals Lorentz Scattering of Interplanetary Dust Grains

1985 ◽  
Vol 85 ◽  
pp. 417-420
Author(s):  
P. Barge ◽  
R. Pellat ◽  
J. Millet
Keyword(s):  
Magnetic Field ◽  
Interplanetary Magnetic Field ◽  
Lorentz Force ◽  
Major Axis ◽  
Interplanetary Dust ◽  
The Sun ◽  
Dust Grains ◽  
Semi Major Axis ◽  
Orbital Parameters ◽  
Resonant Character

AbstractThe scattering of dust grains orbits due to recurrent sectors of the interplanetary magnetic field is reinvestigated with a better formalism. Our method reveals the resonant character of the diffusion and is well suited for the problem. The spreads in the orbital parameters are found less important than believed untill now and to vary rapidly with eccentricity and semi-major axis. Only the small dielectric grains with size less than 0.5 μm may be scattered by the Lorentz force fluctuations; the main diffusion occurs in inclination and near the sun (20-60 R⊙).

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