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DOSE RATE CALIBRATION OF 4" x 4" DETECTOR - FALLOUT
Isotope
140pa-140,4
Gamma Energy
(MeV)
1lO3Ry-103RHh
106Ry-106Rnp
137¢s5
985zr-95NpH
54Mn
0.49
0.50
0,52
0.66
0.75
0.84
(No/ =)
65000
65000
65000
55000
51000
48000
(Np/N,)
1.14
1.14
1.14
1.11
1.10
1.07
half space
0.06
0.34
0.18
0.29
0.26
0.23
exponential*
plane
0.10
0.14
0.55
0.77
0.29
0.40
0.45
0. 60
0.41
0.54
0.36
0.48
half space
4450
25000
13000
17500
14500
12000
exponential*
7400
41000
21500
27500
23000
18500
plane
10400
57000
30000
36500
30000
25000
($/T)
(Np/1)**
F
Peak Counts
SSS
(uxr/hr)
*Assuming 3 cm. relaxation length.
**Twenty minute spectrum.