Scintillator thickness (mm)	Absorption (%)	CsI:Tl*
Scintillator thickness (mm)	Mini Crystals	Slice
6	100	100
3	100	100
2	99.6	100
1	99.5	100
0.5	93.5	94.2
0.25	79.9	78.6
0.125	59.8	60.1
0.05	37.4	37.8
0.025	22	24.2
0.01563	17.4	17.7
0.008	9.6	9.7
0.004	5.7	5.1
0.0025	3.6	3.4
0.002	2.7	2.8
0.001	1.3	1.5
0.0005	0.6	0.7
0.0001	0.1	0.1