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I am not asking about electron positron annihilation, nor positronium.

Electrons (when accelerated in some cases non-uniformly), could emit photons.

Though, I have not found any experiment that would do the same with accelerated positrons emitting photons. After the comments, there is brehmsstralung from positrons interacting with crystals.

I have read this question:

Photon emission between an electron and positron

What happens if a photon emitted from an electron hits a positron?

But these do not answer my question.

Does destructive interference occurs between lights emitted from matter and antimatter?

Does the Advanced Photon Source use electrons or positrons?

where DarioP says:

A positron beam radiates exactly in the same way as an electron beam, so the physics is mostly the same except for one effect: the ion/electron cloud.

These ones state that antimatter can emit photons the same way as matter. Tough, there is no reference nor experiment.

We are able to produce positrons, maybe accelerate them, but I have not found any experiment that would do this or in any way see if positrons can emit photons.

Question:

  1. Can positrons (when accelerated) emit photons?
Árpád Szendrei
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1 Answers1

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There is no doubt that a positron can be accelerated with an electrical potential difference and that every acceleration is accompanied by a photon emission. One should be able to draw this conclusion from Anna's comment on the bremsstrahlung spectra of electrons and positrons.

But there is another point to think about. Accelerating electrons in an antenna rod, the emitted EM radiation is not only synchronized with their electric field direction but also with their magnetic field direction. At the moment, the positive direction of the electric field points upwards, the magnetic north pole points to the right (thumb up and the second finger to the right). What prevents the electrons to radiate lefthanded?
It is an asymmetricity which is not mentioned anywhere. Perhaps future research could show that positrons radiate left-handed.

HolgerFiedler
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