Table 3.

£09

Film
A-1l
A-1
A-2
A-2
A-3
A~3
B~1
B-1
B~-2
B-2
B~3
B-3
C~1
C~1
c-2
C-2
c-3
C~3

STD
SAM
STD
SAM
STD
SAM
STD
SAM
STD
SAM
STD
SAM
STD
SAM
STD
SAM
STD
SAM

Enewetak (Runit I.) Soil Sample Exposures

Bulk
Activity
(pci /g)
730
730
730
840
840
840
840
840
840

Degrader
2.2 em air
none
2.2 cm air
.00025" Mylar
2.2 cm air
~0005" Mylar
2.2 cm air
none
2.2 cm air
.00025" Mylar
2.2 cm air
.0005" Mylar
2.2 cm air
none
2.2 cm air
-00025" Mylar}
2.2 cm air
.00025" Mylar

Blank
(mm)
0.10
0.10
0.40
0.40
0.20
0. 20
0. 40
0.40
0. 30
0.30
0.15
0.15
0.20
0.20
0.25
0.25
0.45
0.45

Exposure
Time
(Hrs. )
0.17
4.30
0.17
4. 30
0.17
5.97
0.17
4.30
0.17
6.00
0.17
4.30
0.17
4.30
0.17
4.30
0.17
6.03

NOTES:

*See Table 2 for definition.

**Tracks/mm*/(pCi/g)/hr, normalized to R std. = 25.50.

Gross
Track/mm2

Net R*
(+ 4S)

562/20
312/60
521/20
114/80
570/20
98/80
560/20
111/50
535/20
98/50
583/20
100/40
1086/40
641/153
515/20
111/30
599/20
106/40

28.00
5.10
25.65
1.03
28.30
1.03
27.60
1.82
26.45
1.66
29.00
2.35
26.95
3.99
25.50
3.45
29.50
2.20

Normalized**
Sensitivity
+
+
+
+
+
+
+
+
+
£
+
+
+
+
+
+
+
+

24%
577%
25%
358%
19%
519%
19%
68%
17%
136%
22%
84%
20%
360%
21%
260%
18%
78%

14.8

-4

x 10

3.26 x 10
2.13 x 10

_4
-4

4.66 x 10
3.17 x 10
5.72 x 10
10.38 x 10
9.55 X 10
3.75 x 10

-4
_4
-4
-4
-4
2

Select target paragraph3