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Parametric amplification of Alfven waves
Plasma Physics, 1977The present analysis has been made to investigate the effects of finite resistivity on the amplification of low frequency plasma waves, e.g. an Alfven wave due to a time dependent modulating magnetic field. It is found that the bandwidth of frequencies for which amplification occurs increases due to finite resistivity.
MITTAL, ML, PRAHALAD, YS
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Coronal heating through Alfven waves
Advances in Space Research, 2002Sustaining the hot solar corona above polar regions, where the fast solar wind is accelerated, requires an energy flux of about 5 × 105 erg cm−2 s−1 whose source must be the photospheric motions below. The precise way this energy is transferred and damped remains an open question, though Alfven waves are the more natural candidates.
DEL ZANNA, LUCA, VELLI, MARCO
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Parametric amplification of Alfven waves
Plasma Physics, 1972Parametric excitation of Alfven waves was predicted by Montgomery and Harding (1966). They showed that torsional Alfven waves of frequency omega are excited in a magnetised plasma by sinusoidally perturbing the external magnetic field at a frequency of 2 omega .
J A Lehane, F J Paoloni
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Far-infrared Alfven waves in graphite
Journal of Physics: Condensed Matter, 1989Alfven-wave propagation in single-crystal graphite has been studied at 4.2 K with wavelengths of 392.5, 433 and 512.5 mu m in magnetic fields up to 8.5 T applied along the c axis in the Faraday geometry. The mass density function obtained from the magnetic field dependence of interference maxima is in excellent agreement with the predicted value from ...
W R Datars, A Weingartshofer
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Four wave mixing of finite amplitude Alfven waves
International Conference on Plasma Science (papers in summary form only received), 1995Summary form only given. Past treatments of coherent wave mixing of Alfven waves have generally been restricted to three wave interactions. This paper presents the first results that show that finite amplitude Alfven waves can also undergo four wave mixing.
S. Rauf, J.A. Tataronis
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AIP Conference Proceedings, 1995
A brief review of time‐dependent theories of resonant mode coupling of Alfven waves in space plasmas is presented. A well behaved solution of the hydromagnetic wave equation for a general class of initial conditions is then discussed to understand the ringing, phase‐mixing, and variable eigenperiods of the field line oscillations in the magnetosphere ...
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A brief review of time‐dependent theories of resonant mode coupling of Alfven waves in space plasmas is presented. A well behaved solution of the hydromagnetic wave equation for a general class of initial conditions is then discussed to understand the ringing, phase‐mixing, and variable eigenperiods of the field line oscillations in the magnetosphere ...
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Science, 1962
We have described a set of laboratory experiments which establish the primary properties of Alfvén waves and have mentioned natural phenomena in which these waves exert a strong influence. To date, there have been few technological applications of Alfvén waves, although the waves are being considered for use in hydromagnetic amplifiers and in ...
F I, Boley, J M, Wilcox
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We have described a set of laboratory experiments which establish the primary properties of Alfvén waves and have mentioned natural phenomena in which these waves exert a strong influence. To date, there have been few technological applications of Alfvén waves, although the waves are being considered for use in hydromagnetic amplifiers and in ...
F I, Boley, J M, Wilcox
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Alfven waves and sunspot line profiles
Chinese Astronomy and Astrophysics, 1984Abstract We investigate the effect of Alfven waves on the profile of the g = 0 lines FeI 5691.505 and FeI 5434.534. We find nonnegligible oscillation and distortion of the profile and vastly different lines. We calculate the theoretical profiles of these two lines under the action of Alfven waves, compare them with observations and hence verify ...
null Ye Shi-hui, null Jin Jie-hai
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A review of Alfven wave heating
Plasma Physics and Controlled Fusion, 1986Reviews the experimental status and recent advances in Alfven wave heating (AWH). The authors discuss the underlying physics of Alfven wave heating, as seen by the experiments. The use of Alfven waves for plasma diagnosis is discussed. The results of plasma heating on TCA are summarized.
Besson, G +9 more
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ALFVEN WAVE HEATING IN TOROIDAL PLASMAS
1979Note: Proc. Joint Varenna-Grenoble Int. Symposium, Heating in Toroidal Plasmas, Vol. II, 195 - 206, juillet 1978, Grenoble Reference CRPP-CONF-1978-004 Record created on 2008-05-13, modified on 2017-05 ...
R. Keller, R. Gruber, F. Troyon
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