Response of Anthracene Scintillation Crystals to Monoenergetic Soft X-Rays

The response of anthracene to monoenergetic x-rays in the range from 9 kev to 24 kev in a scintillation detector has been investigated. The results show that the response to short-range electrons produced within the crystal by x-rays is about the same as the response to electrons with equal energy incident on the surface of the crystal. In agreement with previous results, the specific fluorescence ($\frac{\mathrm{dL}}{\mathrm{dx}}$) is smaller for slow electrons than for heavy particles of the same specific energy loss ($\frac{\mathrm{dE}}{\mathrm{dx}}$).