T
4
=
SHOT |
ACTIVITY (DISINTEGRATIONS PER MINUTE)
~
{
1
-
Roft 25012 O-12Hr =
0nl
\
o
10 =
1
I
1
l
ol
fF
=
SHOT 2o-oHr
=
a
=
Gearge O-
interval Activity
=
==
=
7
=
5E -F
=
=
Bork.
=
—
é
io*
a
5 oll
|
ok
7
EL
-
.
\
_—
od
|
J
2
o
eT
=
L
\
|
0
TIME AFTER SHOT (HOURS)
TT
TT
Eve
2 E
'
iL
|_—
0
TS
=
eet
=
&z
oe
=
rw
i
TIME AFTER SHOT (HOURS)
i
oomor
107
=
=
2
q
SHOT 2
t
=
_
Ee
5< i
=
>
=
=
5
-
am
=
=
C
=
— — Cumulative Activity
ig?
SHOT 2
4
HowO-I2Hr
3
=
=
7
4
=
3
_]
5
So
E ote
_
5
_
BE
a
2
=
P
=
BoE
f.
wn wt
ee
aaa
a“
=
=
=
0
|
{
1
|
i
7
=
a
7
&§
=;
et
=
S
>
Zz
_
a.
—
SE
s
©
=
~~
i
TIME AFTER SHOT (HOURS)
TIME AFTER SHOT (HOURS)
Fig. 3.11 Variation of Beta Activity with Time, Shot 1, Raft 250.12
0-12 hr, Shot 2, George 0-2 hr, George 0-12 hr, How 0-12 hre
a7