RADIATION STANDARDS, INCLUDING FALLOUT
157
TaBLe I.--Integral gamma ray dose for 1-, 30-, and 70-year intervals
[In miliiroentgens}
Gammaray dose per megaton offission
Time interval
Soviet, October 1958
Csi?
0 tol year_._._..-----.-2.---.
0 to 30 years._..-.----------..
0 to 70 years__..-.--.---..----
0.1
2. 08
3. 22
Hardtack I
Short-lived
activity
Cs)37
3. 83
4. 80
4.80
Orange and Teak
Short-lived
activity
0. 025
. 95
1.47
Csi?
0. 62
1.24
1, 24
0
Short-lived
activity
52
80
0
06
06
sess
Tasie II.—Ratio of gamma ray dose from short-lived fission products to that
from Cs”
Test series
Time interval
Soviet, October 1958
Hardtack I
Orange and Teak
0 to 30 years__.._.-.......--------.. 2. 31
1.31
0. 12
0 to 70 years._....-.........-...... L 38 to 10 months_ . . { “g5y5 to 20 months- - { : ds}? to 15 years.
TaBLe III.—integral gamma ray dose for 1-, 30-, and 70-year intervals from 25
megatons of fission from Soviet 1961 tests assuming same deposition pattern
as in 1958-59
[In milliroentgens]
Gammaray dose
Timeinterval
Cs137
Oto 1 year... -.- 2-02 eee eee
0 to 30 years. __.-. ee
0 to 70 years. ___. 2. eee
Short-lived
activity
2.5
96. 0
52.0
120.0
80.5
120.0
Natural
radiation
100
3, 000
7,000
TABLE 1V.—Cumulative ground deposition of Cs"
[Millicuries per square mile]
Month
Soviet October 1958, Cs!"
1958— October_..-.....---.---..--.---November__...-_.._--._.-.---December. -_...--....-.22--22-_1959—Janumary_...__.--.. 2.22. 2 .February ......--.._..-....--_.-Mareh....-_...--2 2-2 eee
April. .....--.------------.----May.....---...--.-.--2-2----2--
0.08
. 50
. 68
1.35
4.41
12.70
26. 97
38. 35
Month
Soviet 1961
Csi3?
1961—September_-_...-....---.--...
October__..------------------November _.._..--.-.---._---December._..__...-..--------1962—January.__.-..-.----.--------February_.-....----.---...--March..__.--_-...-----------April..-.-.--.-------0----u ee
May (to May 15)._-__..--_----
0.10
0
. 50
1.33
2. 60
3. 60
8. 06
10. 11
14, 51
APPENDIX I.—Factors used to compute air dose in pr/hour from deposition of
radioactivity expressed in me/mi?
fsotope
Factor (urfhour/me/mi?)
Cs37_ 0
3.41073}
Zr% ee 4.01073;
Nb ooo oe 8s
4.21073;
Ru) 2.75% 10-3]
Rue
1.3x10-3
Fsotope
Factor (urjhour/mc/mi?)
Cel) ee 0. 35 1073
Cett—Pri4_ 0 0. 17 >< 1078
Bale
1.01078
Lala ee 16. 0% 10-3
espUESREIS itSe stRRRTe