Electron Cyclotron Resonance

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Uploaded by on Nov 18, 2009

Electron cyclotron resonance is a phenomenon observed both in plasma physics and condensed matter physics. An electron in a static and uniform magnetic field will move in a circle due to the Lorentz force. The circular motion may be superimposed with a uniform axial motion, resulting in a helix, or with a uniform motion perpendicular to the field, e.g., in the presence of an electrical or gravitational field, resulting in a cycloid. The angular frequency (ω = 2πf ) of this cyclotron motion for a given magnetic field strength B .

where e is the elementary charge and m is the mass of the electron. For the commonly used microwave frequency 2.45 GHz and the bare electron charge and mass, the resonance condition is met when B = 875 G = 0.0875 T. For particles of charge q, rest mass m0 moving at relativistic speeds v, the formula needs to be adjusted according to the special theory of relativity

An ionized plasma may be efficiently produced or heated by superimposing a static magnetic field and a high-frequency electromagnetic field at the electron cyclotron resonance frequency. In the toroidal magnetic fields used in magnetic fusion energy research, the magnetic field decreases with the major radius, so the location of the power deposition can be controlled within about a centimeter. Furthermore, the heating power can be rapidly modulated and is deposited directly into the electrons. These properties make electron cyclotron heating a very valuable research tool for energy transport studies. In addition to heating, electron cyclotron waves can be used to drive current. The inverse process of electron cyclotron emission can be used as a diagnostic of the radial electron temperature profile.

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Uploader Comments (dumbbell3333)

  • i think i rated your old vid ...what if you spray ...and use mind control type reactions ...??

  • Hi  stimulater7 Thanx mate :)

    I thought it was time 4 a repost.

  • hey did you note the jeep with the resonator had 8 sides ....

    as a side note ... i see this guy he does deliveries at work once a week ... well if you know me ? .. i stired him up over new world order conditioning ...?

    anyways he had to wait 7 days to get another crack at me!!

    lol...

    sometimes i think people dont wana know this stuff you know happy to bee plugged in to there mp4 players ?

    i was stoked that this guy was all primed up and ready for my next rant ..lol...

  • Hey stimulater7 .

    Mate ,..thats exactly what we all need to do ,..good on ya !

    everyone knows something is happening,..

    some are too scared to face it,..

    some are too conditioned to accept it.

    some are waking more everyday,..

    and some are razor sharp.

    as you are mate ! :)

see all

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