Laboratory observation of Alfvén resonance

Details Laboratory observation of Alfvén resonance Laboratory observation of Alfvén resonance

Mar 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001georl..28..923m&link_type=abstract

Geophysical Research Letters, Volume 28, Issue 5, p. 923-926

Physics

11

Magnetospheric Physics: Plasma Waves And Instabilities

Scientific paper

We present laboratory observations of shear Alfvén wave resonances in a cylindrical plasma column. Fourier data are presented which show the existence of many standing eigenmodes in the shear Alfvén frequency range. Harmonic frequency dependence on ambient B is presented for three resonances. A wavelet analysis is used to show the lifetimes of the identified harmonic modes. Experimental Q values for the first five eigenfrequencies are measured and compared to theoretical values.

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