a ee te ta re te
NRL REPORT 6374
TaBLe Al
Radioactive Decay of Radon Descendants on a Filter Following
a 20-min Collection During Which the Radon Conglomerate
Progressively Increased in Age*
ted in
ner
radon
Counting
Interval
rowth
affect
(min)
t sig-
F the
dard
,
RaC
Age 0-20 min;
‘lods
for
RaB
Interval
*
|
RaA
(min)
RaB
RaC
Age 80-100 min;
p = 0.564 to 0.623
p = 9.0 to 0.190
roce-
en.
RaA
Radioactive Decavs
Counting
Radioactive Decays
0-1
Sample Manipulation
1-6
2296}
4112]
3775
2069
6-11
745
|14109
16380
11-16
230
3370;
2311
11-16
939
112454
15874
25
7
9640
8474
14223
13533
6-11
715
1-6
2316 |15867 16655
21-26
26-31
24
7
2977]
2622
2307
2504
2498
21-26
26-31
1e5
31-36
3
2027
2443
31-36
3
7431
12630
ed
36-41
1
1782
2353
36-41
I
6544
11717
lis
41-46
O
1566
2244
41-46
O
5753
10814
re
46-51
O{
1375
2119
46-51
0
5057
9938
te
51-56
0}
1209
i983
51-56
)
4443
9101
ig
56-61
0
1063
1847
56-61
Q
3904
8301
if
61-66
0
934
1707
61-66
QO
3432
7552
_
66-71
0
$21
1576
66-71
0
3017
6851
:
J
2450
Sample Manipulation
74
are
pP
16-21
1709
0-1
Age 40-60 min;
16-21
77 |10962 15196
Age © (secular equiltbrium);
p = 0.355 to 0.478
p = 0.735
0-1
Sample Manipulation
0-1
Sample Manipulation
1-6
2316
112780
6-11
11-16
745
239
111397
10069
10802
1-6
2316
[17594
21219
11006
10960
6-11
[1-16
745
239
115627
113788
20470
19533
16-21
77
8866
[10715
16-21
77
(12134
18467
21-26
26-31
31-36
36-41
41-46
46-51
51-56
56-61
25
7
3
¥
O
oO
0
07;
7798
6855
6025
5295
4654
4090
3594
3158
|10325
9839
9285
8699
8094
7491
6900
6329
21-26
26-31
31-36
36-41
41-46
46-51
51-56
56-6]
25
7
3
1
0
0
0
QO
110670
9379
8245
7245
6367
5594
4916
4321
17320
16136
14950
13782
12654
11572
10551
9589
61-66
QO
2776
5785
61-66
0
3798
8696
66-71
0
2440
5272
66-71
0
3338
7866
*Based on sampling of 100 pCi of radon per unit volume in various stages of equilibrium
with its descendants.