NRL REPORT 6374
TABLE 4
Summary of Radon Concentrations Deduced from Count Ratios Under the Assumptions of One
Instantaneous Emission of Radon From the Soit at Some Past Time, of Continuous Emission of Radon
Fromthe Soil at a Uniform Rate Beginning at Some Past Time, and of Secular Equilibrium of Radon
and Its Daughters in the Atmosphere
Collection
Date
i
Radon Concentration (pCi/m?)
,
eat
“t,
seaifiat
Absorber
Thickness
(mils Al)
pe
Instantaneous
Emission
Continuous*
Emission
30
0
0.73 + 0.09
0.71 + 0.06
923 + 30
249 + 18
224
256
22046
940 +3
Time
(EST)
FI ae
o” are
(m?/min)
‘one
“oun
(f141)
0730-0750
0732-0752
0.501
0.430
1475
10896
0.398
0.322
t
Secular
Equilibrium
1964
Oct. 29
0940-1000
0.428
7117
0.331
5
0.86 + 0,06
303 + 20
_—
279+ 4
0942-1002
0.501
2234
0.369
30
0.85 + 0.08
2k6 + 28
—_
333 + 8
Nov. 10
0810-0830
0812-0832
0.518
0.436
12006
9829
0.388
0.378
“10
10
0.64 + 0.03
0.69 + 0.04
670 + 35
602 +37
744
635
579 +6
562 +6
Nov. 12.
0800-0820
0802-0822
0.513
0.436
9640
2832
0.391
0.384
10
30
0.63 + 0.04
0.78 = 0.06
556 + 30
452+ 39
623
_
470 +5
485 + 10
Noy. 13)
0805-0825
0807-0827
0.515
0.436
764
187]
0.402
0.382
30
10
0.72 40.13
0.68 + 0.09
115 + 23
1I8+ 16
i17
126
tHll+5
107 + 3
Nov. 16
0945-1005
0947-1007
0.515
0.433
1870
4214
0.412
0.386
30
10
0.68 + 0.07
0.65 + 0.06
209 + 34
O77 + 2
318
305
27147
243 +4
Nov. 23)
0835-0855
(837-0857
0.521
0.442
2468
1882
0.377
0.369
10
10
0.70 + 0.08
0.74 + 0.10
126417
106 + 18
131
106
118 +3
106 + 3
Nov. 24
0815-0835
0817-0837
0.52]
0.439
5956
4799
0.388
0.382
10
10
0.65 + 0.05
(L67 + 0.06
331 + 26
302 + 27
364
326
286 = 4
27344
Nov. 25
0814-0834
0816-0836
0.515
0.433
2042
16G0
0.389
0.364
10
10
0.64 + 0.10
0.76 + 0.11
ES417
88+ 16
128
_—
99+ 3
go> 8
Nov. 27
0850-0910
0852-0912
0.515
0.439
4874
4052
0.381
0.371
10
10
0.68 + 0.06
0.73 + 0.06
259 + 93
233 + 34
276
234
23724
23144
Now. 30
+ 0810-0830
0.513
3834
0.372
10
0.72 + 0.07
190 + 20
194
18743
teens aeRea
7
oH
Nov. 9
Dec. 7
0935-0955
0.521
1296
0.362
10
0.78 + 0.12
58+ 12
_
6242
Dec. 9
0830-0850
0832-0852
0.521
0.442
4331
3310
0.393
0.405
10
10
0.62 + 0.06
0.58 + 0.05
250 + 238
246 + 27
283
286
208 + 4
187 +4
Dec. 14
0808-0828
0810-0830
0.521
0.430
2623
2154
0.361
0.337
10
10
0.78 + 0.09
V.g0 + 0.15
117+ 16
94412
—
_
12643
125 +3
Jan. 5
0710-0730
0755-0815
0840-0900
0925-0945
1010-1030
1055-1115
1310-1330
1520-1540
0.541
0.541
0.541
0.541
0.541
0.541
0.541
0.541
4589
4918
5302
3637
4564
3489
2711
2342
0.384
0.393
0.365
0.358
0.368
0.365
0,392
0.351
10
10
10
10
10
10
10
10
0.66
0.62
0.76
0.80
0.75
0.76
0.62
0.84
+
+
+
+
+
+
+
+
O47
0.05
0.06
0.07
0.06
0.07
0.07
0.10
238 +
272 +
236 +
152 4
208 +
155+
149+
91+
21
24
22
17
20
19
18
13
259
307
_
_
—
—
168
_
21244
227 +4
245 +4
168 +3
2l1+4
16123
125+ 3
108 + 3
Jan. 7
0820-0840
0905-0925
1015-1035
1530-1550
0.541
0.541
0.541
0.541
6315
6534
4761
2235
0.369
0.370
0.375
0.361
10
10
10
10
0.74
0.74
0.71
0.79
+
+
+
+
0.05
0.05
0.06
0.09
292
304
229
96
+
+
+
+
24
24
21
14
292
304
936
_
292+4
30244
990 +4
103 +3
1965
*No conversion factors derivable for conditions where p > 0.735.
ALLS