RADIOCHEMICAL FRACTIONATION CHARACTERISTICS
113
variations from predicted values. Particles ranging in size from 5 to
20 u were analyzed from each of two shots. Two sets of selected aggregate particles between 4 to 9 were also analyzed.’
A logarithmic fractionation correlation plot of ry49 39 VS. T95 g9* in-
corporating filter-paper aggregate particles and individual particle data
from both shots fitted linearly (see Fig. 3). Freiling’ has plotted ryqy 39
10?
PTT
=
PTT TTPTyy
PT
OT PTT yy
PT
TT TTS
78 (6.9 y)O—
_
}—
—
—
a
76 (5.3 pg
62 (4-9 yp) °
|
0 75 (7.8 y)
0719 y)
O77 (9 ys)
10
=
74 (13 p)
-
=
4
.
SOLUTION 0
1
-_
=
—
-—
3
__
=
SOLUTION
os
4
——a
© SHOT A
O SHOT B
SOLUTION
——
—
yo! LLLLLL
1
Lott yeti
10
Littl
10?
Po
Le eiiyy
103
95,89
Fig. 3—Logarithmic fractionation correlation for 'Ba.
data for megaton-range coral-surface bursts and three types of water
bursts. Within the limits of error, the slope and intercept of the regression line of Fig. 3 are comparable with those of Freiling’s plot.
The single particles are severely fractionated with respect to the
total sample. It is interesting to note that for these particles the frac-
tionation plot had to be extended another decade to include the particle
r-value ratios.
*r:,99 is defined as the ratio of calculated isotope (i) fissions to calculated
8Sr fissions, f;/fgs where f equals fissions.
$