Table B.3
Kesponse to Uniform 4 Pi Distribution of Sources Over a Spherical Shell
Helative to the Same Sources Concentrated at a Point at the Same Radius
and on the Normal to the Instruments's Axis*
KCVP#*
Effective MEV*#**
75.00
.058
98
Mark I
-——
100.00
.087
150.00
.138
200.00
168
250.00
222
69°?
1.20
61
73
73
£85
---
Mark II
53
64
473
79
79
90
Mark IIT
71
84
83
-98
«93
-96
*
See paragraph B.2.5.
##
Kilovolt constant potential on the X-ray tube giving the beam.
###
The effective photon energy, in terms of absorbtion in light elements which the Bureau of Standards
believes exists in these beams.
Table B.4
kvcP
Effective
Potential
MEV
75
100
150
200
25
co
*
-058
087
138
-168
0222
1.200
See paragraph B.2.5
Computed Responses of Mark II to Uniformly Distributed Sources of
Several Different Effective Energies*
90° Response
in pa/mr/hr
.08
.68
1.89
1.85
1.83
2.10
Response to 4 Pi Source
Relative to Response to
90° Incidence
53
064
073
079
279
90
Effective Response to
Distributed Monochromatic
Source
004 pA/mr/hr
43
1.38
1.46
1.44
1.90
"
"
"
"
"