Quote:
Originally Posted by papageno
Unfortunately, 10-13 m is about two orders of magnitude smaller than the spacing of atoms in a crystal. So, you have the problem of finding a periodic structure which has a periodicity of the order of the wavelength.
At first glance you would need to pack charged particles much closer than the average distance between an electron and the nucleus in an atom (well, there is a reason why gamma radiation is linked to nuclear reactions).
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It occurred to me that you could use muons instead of electrons.
Muons are about 200 times heavier than electrons, and therefore the corresponding Bohr radius would be about 2.5 x 10
-13 m, which is just right for your 2 MeV gamma photons.
Unfortunately, muons have a finite lifetime, and I do not know whether putting them into a crystal would make them stable.