Fascinating. It would be interesting to see what this looks like under a NURUGO lens on a smartphone.

Moreover, I would suggest following the methodology I used with a Logitech 910C, covered with black electrical masking tape and using "Cosmic Ray Finder" - it took around 600 hours to observe 3 strange radiation tracks from a highly active ECCO fuel sample, but it was well worth it.

Have you got images of the degradation at a higher resolution. If not, and you have samples you would be willing to have looked at, I would be happy to do that for you.