a
127
ee
4s that of course the line isn't straight
up here as it is down here, so with very
low activity semples you ¢*n run just a
few absorbers beginning with a curve and
determine the maximum energy.
The next slide is a two component
system and mathematically of course, two
Beta Emitters will be eimply the sum of two
straight lines and when you run the total
semple, you get the cumulative curve, extrae-
polating that and cubtracting your total
curve, you obtain these two straight lines.
We have ordered isotopes from Oak
Ridge and run in the order of a hundred of
them, and plotted each one separately to de-
termine the slore: of these lanes and then
plotted the slope against the known maxinua
energy.
.
¥
t
The next slide is this relationship,
This fe our ecralculated slope versus
the maximum energy of the sample which you
see over here for just a few of the isotopes,
You can see there's a good empirical
relationship,
Can we have the lights, please?
=e
/Q