Jio felt a little strange, but beyond that not much different. He used his left hand to clean himself up a bit, too. "Suit yourself." He replies as he walks back to the camp.
"That was a rather impressive show."
"And why didn't you help?"
"My attacks didn't seem to stop it, and you seemed to handle it just fine."
OoC: At best, it will be a temporary effect. And from a cursory reading, it seems beta radiation would only be applicable to radiative materials. So, not likely Jio can act as a Geiger counter or see the radiation.