First, a press forging makes it possible to obtain crystals with linear dimensions exceeding significantly those of grown single crystals. Second, the polycrystals are ruggedized, which is important in some cases. The most important feature of Cesium Iodide crystals doped with Thallium is their emission spectrum having the maximum at 550 nm, which allows photodiodes to be used to detect the emission. Cesium Iodide doped with Sodium is today a widely used material nowadays. Te do not have very good transparence, so as we don't recommend to use it with thickness more then 3 - 4 mm.
Te are non-higroscopic and good enough for mechanical treatment without any cleavage.
Te-boules with standard diameter 24 mm. The diameter up to 40 mm is available at request.