described in Appendix A, The ton exchange colwms used for the Naz analyses are shown in Fig. 3.45, Determinations of Fe59 activities E SP * iyRe AL fel gtaoS fSEsUPE UME & GRE. Sota BERSofl ANTe feesaeate PsN yrap eesaeiee ye os: , | Likes tf oy Fi Pan he BE ia cesT 2: OD Panu te GE ypgiivs ger eay i : gist Bap] [dina a sl ell Oecd Brod wal 3 bbe he abe ' fin € . ary saanine e er oe i weee oe gd tetis any, PE: a4 ¥, ¢ ide ~teed 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