described in Appendix A,
The ton exchange colwms used for the Naz
analyses are shown in Fig. 3.45, Determinations of Fe59 activities
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Fig. 3.6
Ion Exchange Columns for Sodium Analysis
were attempted by gamma ray spectrometric analyses.
All radiochetical
. samples were mounted in the, center of 2 1/2 x 3 1/2 in. aluminum cards
and covered with 0.45 mg/cn* pliofilm.
3.4.4. Counting Techniques
Counting was carried out with thin mica window GM counters
mounted on Lucite stages,
These stages were of the same basic
design as the commerical models such as RCL Mk hh, Model I, modifled
by these Laboratories to. provide an absorber. shelf and to improve
reproducibility of counter positioning, The stages and counters
_were housed in Technical Associates Model LS2 vertical lead pigs,
Output was fed to Berkely 2000 scalers, The counting room in the
laboratory trailer is shown in Fig. 3.7.
:
2h
SECRET — RESTRICTED DATA