... sample and keep it in a more homogenizedform, including drying, crushing, homogenization, and sieving of the soil and sediment samples. Sample preparation serves also to increase the counting effi-ciency, ... mentioned before, the solid crystal has three energy bands: the valenceband, the conduction band, and the forbidden band. For electrical conductors, thewidth of the forbidden energy band is very ... 122.06136.471 39 Ce 137.66 165.86203Hg 46.604 2 79. 20113Sn 115. 09 391 . 69 85Sr 64.8 49 514.01137Cs 11,000 661.6660Co 192 5.3 1173.231332. 49 88Y 106.63 898 .041836.06DK 594 X_book.fm Page...