Is there any sort of higher amount of photons emitted by a particular set of frequencies?
Well, for instance, a piece of paper does not interact with gamma radiation because the radiation passes through the paper with no interaction. So what i mean by this, is what types of substances interact with alpha, beta, and gamma radiation to excite the material and emitt photons?
But which substances emitt large amounts of photons?
In other words, which types of substances when excited by various means, specifically gamma radiation, emit more photons than other substances?
Then why don't we concentrate a given area with photons, then release them?