EFFECTS OF SAMPLE DENSITY IN THE DETERMINATION OF RADIONUCLIDES BY GAMMA SPECTROMETRY

The effect of sample density in the determination of radionuclides by gamma spectrometry was studied using two multinuclide standard sources of different densities. The self absorption corrections due to differences in sample matrix densities were estimated. The corrections were used in the analysis food and soil samples having packing densities between 0.2 – 1.6g/ml. ABSTRAK Kesan ketumpatan sampel dalam penentuan radionuklid menggunakan spektrometri gamma telah dikaji menggunakan dua punca standard pelbagai nuklid dengan ketumpatan yang berbeza. Pembetulan penyerapan diri kerana perbezaan ketumpatan matrik sampel telah dianggarkan. Pembetulan ini telah digunakan dalam analysis sampel makanan dan tanah yang mempunyai ketumpatan pembungkusan antara 0.2 – 1.6 g/ml.

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