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We try to work out some method
which will give ua a straight line function
because it is difficult to compare curved
shapes and we found that by using an intermediate substance such as phogphoroug 32,
and plotting a log line relationship, that
is of activity transmitted in aluminum for
phosphorous versus activity transmitted of
your sample, you can obtain a straight line
relationship if you have an isotope emitting
one Beta particle that is one of a maximum
energy Beta,
Row, the first slide I have here
is the conventional method,
This is the
phosphorous 32 and this one,
The thickness of aluminum versus activity transte
mitted in per cent and you see if you come
pare two curves like this it would be a
visual process just looking at shapes.
The second slide is the sane
phenomenon plotted on a three logarithmic
-- three cycle logarithmic paper and in thie
case, the tranemigsion of beryllium ia
plotted versus the transmission of Pao for
each, for the same absorber and even’ though
the Beta points aren't shown, it's a very
good straight line,
Now, the good part of this method
ED