58 + 10 “ T may —" T ——~ 7 r v tpt T 7 bp 4 4 Y b ce?” 4 co?? ~ 4 a 4 a 4 4 am! Ge tte? 1 - - } r /4 r " P 4 > q Ett (x) . co q co®? = q r . Ve 4 r q _ Ge {intrinsc) } d 1 r 4 P « } | P 4 ce r 0 } 7 4 10 in ad i deeemacheminahemnhaendmnal 100 4 ENERGY Figure 10. oh aie eeeeeererdeeersnamle 1000 (kev) Absolute counting efficency of the Ge(Li} and Ge(Intrinsic) detectors with gamma-ray energy as determined by counting radionuclide standards made to a sample density of 1.1 g/cc.