Synchronic-In-Phase Electric Drive’s Characteristics Based on Multifunctional Logical Correlation Device with Indirect Angular Frequency Determination

2018 ◽  
Author(s):  
A.V. Bubnov ◽  
A. N. Chetverik ◽  
A. N. Chudinov ◽  
V.V. Ganin
Keyword(s):  
Angular Frequency ◽  
Frequency Determination

Plasma frequency determination in YBa2Cu3O6+x as a function of oxygen content

1989 ◽  
Vol 50 (18) ◽  
pp. 2895-2901 ◽  
Author(s):  
N. Bontemps ◽  
D. Fournier ◽  
A.C. Boccara ◽  
P. Monod ◽  
H. Alloul ◽  
...  
Keyword(s):  
Oxygen Content ◽  
Plasma Frequency ◽  
Frequency Determination

Multi-rating Electronic Ballast for Fluorescent Lamps based on Operating Frequency Determination

2011 ◽  
Vol 131 (10) ◽  
pp. 1184-1192
Author(s):  
Piyasawat Navaratana Na Ayudhya ◽  
Sumate Naetiladdanon ◽  
Anawach Sangswang
Keyword(s):  
Operating Frequency ◽  
Electronic Ballast ◽  
Frequency Determination ◽  
Fluorescent Lamps

Surface and interfacial anti-plane waves in micropolar solids with surface energy

2020 ◽  
pp. 108128652096564
Author(s):  
Mriganka Shekhar Chaki ◽  
Victor A Eremeyev ◽  
Abhishek K Singh
Keyword(s):  
Surface Wave ◽  
Plane Wave ◽  
Numerical Study ◽  
Plane Waves ◽  
Angular Frequency ◽  
Elastic Half Space ◽  
Surface Strain ◽  
Theoretical Frameworks ◽  
Algebraic Form ◽  
New Type

In this work, the propagation behaviour of a surface wave in a micropolar elastic half-space with surface strain and kinetic energies localized at the surface and the propagation behaviour of an interfacial anti-plane wave between two micropolar elastic half-spaces with interfacial strain and kinetic energies localized at the interface have been studied. The Gurtin–Murdoch model has been adopted for surface and interfacial elasticity. Dispersion equations for both models have been obtained in algebraic form for two types of anti-plane wave, i.e. a Love-type wave and a new type of surface wave (due to micropolarity). The angular frequency and phase velocity of anti-plane waves have been analysed through a numerical study within cut-off frequencies. The obtained results may find suitable applications in thin film technology, non-destructive analysis or biomechanics, where the models discussed here may serve as theoretical frameworks for similar types of phenomena.

Lie Groups and the Jahn–Teller Effect

1974 ◽  
Vol 52 (11) ◽  
pp. 999-1044 ◽  
Author(s):  
B. R. Judd
Keyword(s):  
Lie Groups ◽  
Nuclear Physics ◽  
Angular Frequency ◽  
Teller Effect ◽  
Octahedral Complex ◽  
Noncompact Group ◽  
Five Dimensions ◽  
Branching Rules ◽  
Jahn Teller ◽  
Jahn Teller Effect

After an introduction to the classic theory of the Jahn–Teller effect for octahedral complexes, an account is given of Lie groups and their relevance to the F+ center in CaO. The coincidence of the three-fold and two-fold vibrational modes (both of angular frequency ω) leads to a study of U5 and R5, the unitary and rotation groups in five dimensions. The language of second quantization is used to describe the weight spaces and branching rules. Pairs of annihilation and creation operators for phonons are coupled to zero angular momentum and used as the generators of the noncompact group O(2, 1). This facilitates the evaluation of matrix elements of V, the interaction that couples the oscillations of the octahedral complex to the electron in its interior. Glauber states are used near the strong Jahn–Teller limit, corresponding to [Formula: see text]. The possible extension of the analysis to incorporate the breathing mode is outlined. Correspondences with problems in nuclear physics are mentioned.

Effective coffision frequency and electron temperature in a weakly ionized argon plasma

1980 ◽  
Vol 23 (2) ◽  
pp. 271-282
Author(s):  
C. P. Schneider
Keyword(s):  
Electron Temperature ◽  
High Frequency ◽  
Collision Frequency ◽  
Argon Plasma ◽  
Angular Frequency ◽  
Weak Electric Field ◽  
Hard Sphere Model ◽  
Plasma Conductivity ◽  
Gas Plasma ◽  
Weakly Ionized

Herein is described a calculation of the effective coffision frequency νeffof a low- density, shock-heated argon plasma under the influence of a weak electric field which oscillates harmonically with angular frequency ω. It is shown that, for the high frequency case ω >whereis the collision frequency in a Maxwellian gas plasma, one has νeff⋍ 2, provided that the imaginary part of the argon plasma conductivity is negligibly small in comparison to the real part. The influence of the theoretical model used to calculate νeffon the values of the electron temperatureTederived from measurements is compared with the results obtained in a data reduction for which the hard-sphere model for particle encounters was utilized.

Optical frequency determination of the hyperfine components of the two-photon transitions in rubidium

1993 ◽  
Vol 102 (5-6) ◽  
pp. 432-438 ◽  
Author(s):  
F. Nez ◽  
F. Biraben ◽  
R. Felder ◽  
Y. Millerioux
Keyword(s):  
Optical Frequency ◽  
Two Photon ◽  
Frequency Determination
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