188
ZERO-LEVEL LOCATION, CHANNELS
FOOTE
7
~
180
~
9
ex
18]
|
182
|
183
184
185
186
2.615—MEV PHOTOPEAK LOCATION, CHANNELS/ 200
Fig. 5——Lanthanum-140 matrix output error as a function of zero level
FRACTION OF AMOUNT PRESENT ON DEC, 22, 1962
and °8Tl photopeak location.
Por
Po ob
TT
tt
TTT
_
T= 65 DAYS
TT
VT TF ET
OT OT
0.05 IN, RAIN
0.24 IN. RAIN
1.0
\
0.02 IN. RAIN
0.9 PBN
0.7
-
A
ttt
tfTt_T_E?_ EE? ETT?!
18 19 20 2122 23 24 25 26 27 282930311
r
|
EL
23
LNA
EE
45
6
AUGUST
ne
ET!
7
8
EE
_
_
EE
¥ 101112131415 161718
SEPTEMBER
TITTIES
0.12 IN. RAIN
0.8 F
0.7
r
mn
0.6
0.5 E
0.4 -
B
ttt |
_
a
ye eeee
—
tt
18.19 20 2122 23 24 25 26 2728 29301 23.45 6 7 8 9 101112131415 161718
SEPTEMBER
OCTOBER
DATE
Fig. 6—Zirconium-95—niobium-95 effective
function of time, 1963.
surface
amounts as a
4
=