The Photographic Action of X-Rays in the 13 to 001A Range*

Photographic Sensitivity of Image Intensifiers with Thin End Windows

“…The emission of a high energy photon depends on a highly inelastic collision before much ionization energy loss occurs and is very improbable. Nevertheless, the contribution of x-rays may not be negligible, for it is well established that a single absorbed photon of energy greater than a few key will produce a developable grain [15][16][17][18] and the emulsion has a high stopping power for x-rays below about 30 kev. It is only necessary for x-rays to be produced with a probability of the same order as the relevant value of M. quoted in table 1 for a contribution to be apparent.…”