File talk:Magnetron02.svg
This picture is probably intended to explain the electron orbits in a magnetron. For this purpose, it is not suitable.
- an additional radial but linear path should be drawn, with the explanation in the accompanying text that this electron path would be created by the anode voltage without the influence of a magnetic field.
- the blue curve is about O.K. However, it should represent a clean circular arc.
- another missing curve should have a narrower radius with the accompanying text that an increase of the magnetic field bends this path in such a way that the electron falls back onto the cathode. No anode current would flow here.
- by increasing the anode voltage the electron would become faster; the arc of its path would become larger again so that the electron reaches the anode again.
- the green path is theoretically possible, but very unusual because the interaction space (space between cathode and anode) is only a few millimeters in practice.
- the red path is not possible, if only because the electron has no starting point. Such a strong deflection up to a change of the direction of movement for a crossing of its orbit would only be possible if an alternating field with a voltage of the order of several times the anode voltage would occur. This is practically impossible, which is why this path must be removed.
The orbits 1 to 4 would only occur without the influence of an alternating field caused by the resonators. Here it would be conceivable to split the picture into two pictures: one without resonators, one with the resonators.
The second image could have two orbits according to point 4 above one of the original with the accompanying text: Initial: no alternating field present yet. When flying beside a resonator, an oscillation starts. The second electron receives an additional velocity modulation by the alternating field when flying along a resonator slit: it becomes slower, for example, the orbit inclines slightly towards the cathode, and after passing the slit it becomes faster again. This creates a speed modulation and the path gets a slight wave-shaped deflection. After flying beside two or three resonators, the electron reaches the anode and the track is finished.
