to ionization
ling
(1.02) *
CALIBRATION OF 4" " x 4" NaI(TL) DETECTOR
—_——"
Energy (Mev)
Isotope
. 393
113sn
68000
88000
.514
85sr
65000
81000
. 662
137¢5
55000
69000
1.37
24nNa
38000
35000
'
1.46
40K
37500
34500
,
1.76
21453
23000
18500
|
2.62
20871]
22800
16800
:
2.73
24nNa
22000
~
2) (.576)
(No/9)*
:
‘count s/unit flux/20 min.
I*twith 1/4" bakelite shield
%
- 35 -
PEASE Fe gy gg= eee
.
MH
tw
ee
(4 x4") wx
(No/9)* (3 x 5")