Can a Cavity Magnetron Be Used in Reverse to Generate Resonant Frequencies?

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SUMMARY

A cavity magnetron can theoretically be used in reverse to generate resonant frequencies by enabling electromagnetic (EM) waves to interact with a magnetic field, which energizes electrons to jump from a cathode to an anode. This interaction is crucial in understanding why metal objects should not be placed in microwave ovens, as they can reflect radiation back into the magnetron, potentially causing resonance that damages the device. The discussion highlights the relationship between EM waves and magnetic fields, emphasizing their role in electron dynamics.

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lufc88
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Could a cavity magnetron be done in reverse in a way so that the em waves would interact with the magnetic field and give electrons energy to jump from a cathode to an anode and would any resonant frequencies be involved?

I've read some where that this is why metal articles should not be put into microwave ovens they can reflect the radiation back into the magnetron and if the placement is right the resonance can cause the jumping electrons to fry it. Is this correct?
 
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Why would the EM waves interact with the B field?
 
I think they act on the electrons in the b field
 

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