A positron was a particle. It could be found in anti-matter. (TV: Planet of Evil [+]Loading...["Planet of Evil (TV story)"]) Positrons could be produced by particle accelerators and stored in electric and magnetic fields. (TV: The Tsuranga Conundrum [+]Loading...["The Tsuranga Conundrum (TV story)"])
When a positron came into contact with certain fuel materials, as in an anti-matter drive, heat would be produced, which could then be used to generate thrust. (TV: The Tsuranga Conundrum [+]Loading...["The Tsuranga Conundrum (TV story)"])
Photons could be produced by the recombination of an electron and a positron. (TV: Time and the Rani [+]Loading...["Time and the Rani (TV story)"]) An electron and a positron could also be combined to create orthopositronium. (AUDIO: The Time of the Daleks [+]Loading...["The Time of the Daleks (audio story)"])
A fixed-atom force field created a shield of positrons which would painfully repel any intruders. (AUDIO: 1001 Nights [+]Loading...["1001 Nights (audio anthology)"])
In 2023, the Fourteenth Doctor shatterfried the positrons, contained in the Beep the Meep's neutron drive star cruiser, in order to reverse the ignition of the Dagger Drive. (TV: The Star Beast [+]Loading...["The Star Beast (TV story)"])