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210Pb determination by gamma spectrometry in voluminal samples (cylindrical geometry)

2002; Elsevier BV; Volume: 493; Issue: 1-2 Linguagem: Inglês

10.1016/s0168-9002(02)01415-8

1872-9576

E.G. San Miguel, Javier Pérez‐Moreno, J.P. Bolı́var, R. Garcı́a-Tenorio, J.E. Martı́n,

Radiation Shielding Materials Analysis

In this paper a simple method for the direct analysis of 210Pb (T1/2=22.3 years) by gamma-ray spectrometry in sediment samples with coaxial Ge detectors is outlined. This method, developed for a cylindrical sample geometry, accounts for variable sample heights and provides a fundamental advantage: individual self-absorption corrections can easily be determined knowing the apparent densities of the samples. The results obtained with the proposed method are in good agreement with those given by other techniques.