Could lightning be creating antimatter in our atmosphere?

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ISamson
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A recent article from phys.org says that a Japanese team of scientists have detected gamma rays coming from lightning strikes, which react with atmospheric Nitrogen and release a positron.
Diagram of lightning-induced nuclear reactions over a lightning-streaked night sky: r-rays from lightning hit atmospheric nitrogen-14, producing unstable nitrogen-13, a positron, and a neutrino, with annihilation r-rays at 0.511 MeV and a graph of count rate over time showing a spike at the lightning event.

Who would have thought that!
 
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  • Diagram of lightning-induced nuclear reactions over a lightning-streaked night sky: r-rays from lightning hit atmospheric nitrogen-14, producing unstable nitrogen-13, a positron, and a neutrino, with annihilation r-rays at 0.511 MeV and a graph of count rate over time showing a spike at the lightning event.
    lightningwit.jpg
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