12

Oct 17, '50

A resonance was discovered in the water solution of
Ta₂O₅ + 48% HF at a field H₀ = 9500 G & frequency
5.502 Mc.

Oct. 19, '50

Both presumable Pd¹⁰⁵ & Ta¹⁸¹ resonance came from
water. Using triply-distilled H₂O & 99.5% D₂O, we obtained
the same resonance as shown on the tape. CCl₄ did not
give a signal.

Oct. 20, '50

wt. of beaker = 58.160 g.
wt. of beaker = 58.580
+D₂O
---------------------------------
wt. of D₂O = 0.420 g. diluted to 100 cc. with H₂O
in which 4.95 g. of MnCl₂ · 4 H₂O was added.

Molarity of D = 0.44
" " Mn = 0.25