Been a long, long time since I did any 'Nuclear & Radio-Chemistry' (sic) but, IIRC, the UV energies and intensities you or I could muster fall far short of causing nuclear reactions. Serious ionisation, yes. Material damage, yes. Nuclear stuff, no.
But, if you get sufficient energy density, you may get secondary effects, like the X-ray and gamma emissions from colliding supernova debris, that *may* play in the nuclear range.
Note: When I hand-aligned replacement UV discharge tubes for our older HPLC spectrophotometers, I wore big green 'frog' UV goggles, worked in a well ventilated area to mitigate the stink of ozone, made best-speed to minimise my exposure.
Due Care, Please ??