text: Yes. But more technically, it is diffraction. Gamma rays are high frequency light and will diffract, simmilar to ordinary light, except that you need to use a diffraction grating with a short enough spacing.  Compton scattering is an example.  Most physicists will say it is the wave-function that determines where the 'photon' goes.  It turns out that Schrodinger and Compton did a wave derivation of the Compton effect.  The other issue is to show the distinction between the photon model and a good alternative.  It is called the loading theory.  In my experiments, I have made the gamma ray go two ways at once, like a beam-splitter.  Quantum mechanics says the photon should go one way or antother.  The experiment also works with what they call atoms.  I have made the helium ion wave function go both ways defying QM.  I think it is possible to refract gamma, but have not done it, but fundamentally it should, and perhaps can be seen in astronomy.