FIELD INTENSITY, MC/SQ MILE TOTAL-ABSORPTION GAMMA-RAY SPECTROSCOPY 180, ——--—_,-_-_. — pe 195 | “Min AMOUNTS AS A FUNCTION OF TIME 1 100 ea EESr a_ Deeaoe Whe ge Ao Wo Sy i SO be i _! i. al, ! i S 4 ' , : fi va) : FICE OE He 1h fib. - - iH bt Th aif a tot vec T | eee 0 i. i —— | a fe a ee oo nee ao TTI nee ——— i rot at . + a Ly ayer TT Soo EEE Lt DEC JAN FEB MAR APR MAY JUN JUL in ‘ aoe { | yd ALG SEP OCT NOV DEC JAN FEB MAR APR MAY JUN JUL 1963 1964 Pig. 17-~Manganese-J4 effective surface amounts time, li by 11 matrix reduction. as a function of 10 MATRIX AMOUNTS AMOUNTS AS A FUNCTION OF TIME —, 590 MC/SQ MILE Vo eb fb OL ek 0.01 Faroe SV aARSSEEPIT A PPoobtsdeal dachsahsdaetal: 7) SR E SB HES DEC JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC JAN FEB MAR APR MAY JUN JUL 1963 1964 FIELD INSENSITY, MC/SQ MILE Fig. 18—Zirconium-95—Niobium-935 effective surface amounts as a function of time, 11 by 11 matrix reduction. 400 - rc eee ors fee a oe IM, AMOUNTSAS A FUNCTION OF TIME 300 ——— aoe. a a a rea 200 -___ 0 we es 1 4 ma 4 ee et Ee - oe : — atte an Th —ee yy. a 100 . { lp meted GO fiat t he . rn aa es ‘ SraneEner ub nnn: ! - a - te 4 — —_ Anan ere boca me fr Sata we ee . ! . iH i$ Lt: ~ 4 . Cobo tg 1 __ DEC JAN FEB MAR APR MAY JUN Ju AUG SEP OCT NOV DEC JAN FEB MAR APR MAY JUN JUL 1963 1964 Fig. 19-——Cesium-137 effective surface amounts as a function oftime, ii by 21 matrix reduction.