Quince - 13-5-2005 at 01:00
I need to create a small scintillation screen that glows from X-Rays (like in fluoroscopes), that I can photograph with a digital camera, and that
won't degrade after multiple exposures.
I cannot use zinc sulfide due to the long hysteresis -- I plan to do cone-beam tomography of small objects on a turntable, so a few seconds max is the
acceptable (preferably a fraction of a second).
The usual substances are either thallium-doped cesium iodide, or terbium-doped gadolinium oxysulfide. Complete screens are very expensive, whereas
for the chemicals themselves, I only see for sale CsI, without the Tl.
Is it possible to synthesize either of these at home, or how to find them?
[Edited on 13-5-2005 by Quince]