15 3. x10° T T T ~ 10° 137 Net Counts Per Minute Cs 10 SPIKE 2 | ok rer 10" Sb’ SPIKE : SOIL 7 9-10" : 0.5 oo 1.0 1 1.5 MEV Fig. 6. Gamma-ray spectrum of a 9 to 10-inch-depth increment from old soil compared with the gamma spectra of Sb and csi37,
15 3. x10° T T T ~ 10° 137 Net Counts Per Minute Cs 10 SPIKE 2 | ok rer 10" Sb’ SPIKE : SOIL 7 9-10" : 0.5 oo 1.0 1 1.5 MEV Fig. 6. Gamma-ray spectrum of a 9 to 10-inch-depth increment from old soil compared with the gamma spectra of Sb and csi37,