Mode Competition and Frequency Splitting in Magnetic-Field-Tuned Optical Masers

1965 ◽  
Vol 139 (3A) ◽  
pp. A617-A618 ◽  
Author(s):  
R. L. Fork ◽  
M. Sargent
Keyword(s):  
Magnetic Field ◽  
Mode Competition ◽  
Frequency Splitting

scholarly journals Blazhko Effect and Magnetic Field in RR Lyrae

2000 ◽  
Vol 176 ◽  
pp. 318-319
Author(s):  
M. Chadid ◽  
D. Gillet ◽  
K. Kolenberg ◽  
C. Aerts
Keyword(s):  
Magnetic Field ◽  
Pulsation Frequency ◽  
Frequency Splitting ◽  
Rr Lyrae ◽  
Blazhko Effect ◽  
Magnetic Model ◽  
Observational Techniques ◽  
The Magnetic Field

AbstractThe recent detection of a frequency splitting around the pulsation frequency and its harmonics points towards the magnetic model to explain the Blazhko effect. Here we show that it is urgent to confirm with modern observational techniques the existence of the magnetic field in RR Lyrae.

scholarly journals On the implications of the symmetric component of the frequency splitting reported by Duvall, Harvey and Pomerantz

1988 ◽  
Vol 123 ◽  
pp. 175-180
Author(s):  
D.O. Gough ◽  
M.J. Thompson
Keyword(s):  
Magnetic Field ◽  
The Sun ◽  
Frequency Splitting ◽  
Symmetric Component ◽  
Low Latitudes

The component of the frequency splitting of solar five-minute oscillations observed by Duvall, Harvey and Pomerantz that is even in azimuthal degree measures latitudinal and depth variations in the structure of the sun. We indicate how the data hint that there is a shallow perturbation, possibly associated with a magnetic field, that is concentrated at low latitudes.

scholarly journals The effect of toroidal magnetic fields in the overshoot layer on the eigenfrequencies of stellar oscillations

1988 ◽  
Vol 123 ◽  
pp. 167-170
Author(s):  
Gaetano Belvedere
Keyword(s):  
Magnetic Field ◽  
Main Sequence ◽  
Convection Zone ◽  
High Order ◽  
Stable Region ◽  
Flux Tubes ◽  
Frequency Splitting ◽  
Acoustic Modes ◽  
Stellar Oscillations ◽  
The Magnetic Field

The overshoot layer in stellar convection zones is slightly subadiabatic and can be considered as a stable region for storage of magnetic flux. Belvedere, Pidatella and Stix (1986) estimated the size of the overshoot layer and computed the magnetic field strength, beyond which toroidal flux tubes become unstable to buoyancy, for a number of main sequence spectral types ranging from F5 to K0. Here we estimate the relative frequency perturbation of high order acoustic modes due to the presence of a non-oblique axisymmetric magnetic field in the overshoot layer. We find that increases with the advancing spectral type, the predicted frequency splitting being large enough to be detected by observations, at least for the Sun.We conclude that magnetic field induced frequency splitting of high order acoustic modes may well be due to a toroidal field of relatively moderate strength just beneath the bottom of the convection zone.

Mode competition in a gas laser tuned by an axial magnetic field

1986 ◽  
Vol 16 (7) ◽  
pp. 968-971
Author(s):  
V S Afanas'ev ◽  
A Ch Izmaĭlov ◽  
V D Mironov
Keyword(s):  
Magnetic Field ◽  
Axial Magnetic Field ◽  
Mode Competition ◽  
Gas Laser

Mode competition in a gyrotron with tapered external magnetic field

1988 ◽  
Vol 64 (1) ◽  
pp. 137-145 ◽  
Author(s):  
O. DUMBRAJS ◽  
G. S. NUSINOVICH ◽  
A. B. PAVELYEV
Keyword(s):  
Magnetic Field ◽  
External Magnetic Field ◽  
Mode Competition

Nonlinear dynamics of low-frequency drift waves

1996 ◽  
Vol 55 (1) ◽  
pp. 3-23 ◽  
Author(s):  
M. Beckmann ◽  
P. Frank ◽  
G. Himmel
Keyword(s):  
Magnetic Field ◽  
Opposite Sign ◽  
Low Frequency ◽  
Temperature Gradients ◽  
Mode Competition ◽  
Drift Waves ◽  
Nonlinear Behaviour ◽  
Nonlinear Features ◽  
Electron Density And Temperature ◽  
Low Frequency Waves

The nonlinear behaviour of unstable drift waves in magnetized plasmas is analysed analytically. Most attention is paid to low-frequency waves created in electron density and temperature gradients of opposite sign. This situation is typically encountered in radiofrequency-produced discharges. The model developed explains nonlinear features such as mode competition, amplitude saturation and magnetic field hysteresis, which are observed experimentally.

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