Replacement iPhone screen giving off ionizing radiation
I’ve purchased a few replacement screens for my iphone. I’m somewhat of a pro replacing them now. I also own a geiger counter. While using the geiger counter i accidently noticed that my iphone was giving off radiation. The counter detects alpha thru x-ray. I’ve narrowed it down to possibly alpha or beta particles. It doesn’t detect radiation from the back thru metal plate. Just now removed the screen and its definitely the culprit. Anyone have a clue why? I can find nothing about this on the web.
Can anyone verify this? Screens were all from chinese manufacturers.
P.S. Original screens show no radiation emissions. Tested all of my relatives iphones with original screens.
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5 opmerkingen
That’s interesting!
When you test the screen, is it “on” or does it give radiation when it’s off or disconnected?
door Minho
Shows when on or off. around 400-500 cpm
door T Collins
An old school friend of mine, a professor at Southampton University says:
"How are you detecting alpha with a Geiger tube? That requires a specialist thin window tube, do you have that?
What happens if you move it back day 50mm?
Place a sheet of paper in between?
A piece of aluminium foil?
It’s just possible they have used a Thorium compound in an optical coating (fluoride or oxyfluoride) but they have largely been phased out.
If it’s real, it’s probably the 4.08MeV alpha from Th232
Slowly over some years Ra228 will build up with a beta - decay.
There have been incidents of older camera lenses setting off radiation alarms.
At this level the alpha is pretty harmless.
I’d need to know more about his counter and do some suns to figure out if the level is realistic."
door Philip Le Riche
I have a pan detector on my geiger counter. Im aware of the thorium use in the past. Not worried about the radiation, just thought it was odd.
door T Collins
I do however really appreciate a professionals input greatly. I thought it might thorium in the glass, but also read it was banned a while back.
door T Collins