Influence of Impurities on the Radiation Response of the TlBr Semiconductor Crystal

Table 1

Three impurity concentrations (ppm) in the TlBr salt and in the top and middle regions of the TlBr crystal, by ICP-MS. The values represent the mean one standard deviation ( samples).

TlBr origin			Crystal region	Impurities elements (ppm)
				Ba	Ca	Li
Salt 1			Raw material
	Bridgman growth step	First	Top
			Middle
		Second	Top
			Middle
		Third	Top
			Middle
Salt 2			Raw material
	Bridgman growth step	First	Top
			Middle
		Second	Top
			Middle
		Third	Top
			Middle

There is a statistical difference between sample value and the initial concentration of raw salt ().