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| Format: | Artículo científico |
| Language: | en |
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Sociedade Brasileira de Proteção Radiológica - SBPR
2019
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| Online Access: | https://www.redalyc.org/articulo.oa?id=722280901001 |
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Table of Contents:
- Sum-peak method with two NaI(Tl) crystals: 68(Ge + Ga) standardization E. M. Oliveira A. Iwahara R. Poledna C. J. Silva P. A. L. da Cruz R. S. Gomes J. U. Delgado R. T. Lopes Biología sum 68Ge 68Ga peak method anticoincidence method A 68(Ge + Ga) commercial solution has been standardized in LNMRI in Brazil, by sum-peak method, in which a 3”x3” NaI(Tl) gamma-ray detector is positioned at the top of a well-type 5”x5” NaI(Tl) gamma-ray detector, resulting in a set up approximately 4π geometry. In this work the known germanium volatility was tested using three dried sources and three liquid sources in the sum-peak method measurements and the activity results showed a standard deviation of 0.41%. The activities were compared with another primary method: 4πβ−γ livetimed anti-coincidence counting. The two methods gave activity concentration values with differences from the certified value of +0.8 % (anticoincidence method) and -3.4% (sum-peak method). 2019 artículo científico 2319-0612 https://www.redalyc.org/articulo.oa?id=722280901001 en http://www.redalyc.org/revista.oa?id=7222 Brazilian Journal of Radiation Sciences application/pdf Sociedade Brasileira de Proteção Radiológica - SBPR Brazilian Journal of Radiation Sciences (Brasil) Num.3B Vol.7