If you're ok with experimenting, try a white LED. LED's can be used as
photodiodes, and the phosphors in a white LED will probably fluoresce with x-
rays, so the emission might be detectable if you shroud the LED in darkness
and it as a photodiode.
If you want something more ideal, specify whether you want the change to be
temporary or permanent, as answers might vary hugely depending which you
More details on what you're trying to do would still be helpful - for
instance, what's stopping you from using a good ol' Geiger tube, or
a "scintillator" (generally a photomultiplier looking at a bit of sodium
iodide or some such)?
Also, how specific does it have to be to X-rays (as in, the idea of
watching for what happens with a white LED or some other phosphor-
bearing device is a good one, but it's also going to fluoresce when
exposed to UV, etc.).
"shroud the LED in darkness" :) Easy to do, many polymers are pretty much
transparent to x-rays but will totally exclude light including both far ends
of its spectrum, and it should help block electrons too, if you want to
check for gamma rays while excluding beta particles. I'm more curious about
whether the phosphors in the LED respond well to such shortwave emissions,
and whether the LED degrades fatally after limited x-ray exposure. I'm in no
position to test this so if anyone can supply answers, please do.
So I see that we have only xray to light conversion and then measure
the light (like it is done in scintillators).
Interesting..I thought that there were materials that change its
resistance, capacitance etc. under exposure..
Note that I didn't say that X-ray -> light was the ONLY
possible form of X-ray detection/measurement - it's just
one of the more common. Off the top of my head, I am
not aware of materials that change resistance, etc., upon
exposure to X-rays, at least not in an especially useful
fashion, but I suppose that such might exist. Again, what's
really needed here is more info about what's really needed
here, and why the more usual methods already mentioned
can't be used.
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