KOSKINAS, MARINA F.SILVA, ELIEZER A. daYAMAZAKI, IONE M.DIAS, MAURO da S.2014-07-152014-07-302014-07-152014-07-302006KOSKINAS, MARINA F.; SILVA, ELIEZER A. da; YAMAZAKI, IONE M.; DIAS, MAURO da S. Standardization of 241Am solution. <b>Applied Radiation and Isotopes</b>, v. 64, p. p. 1238-1241, 2006. DOI: <a href="https://dx.doi.org/10.1016/j.apradiso.2006.02.028">10.1016/j.apradiso.2006.02.028</a>. Disponível em: http://repositorio.ipen.br/handle/123456789/5404.0969-8043http://repositorio.ipen.br/handle/123456789/5404The standardization of 241Am solution has been undertaken using a 4 π β - γ coincidence system. The 4 π proportional counter used for alpha detection has a 0.1 mm thick Al window in the outside wall in order to minimize γ-ray attenuation. The extrapolation technique was applied to determine the activity of the solution. The variation of alpha efficiency has been made using external absorbers and by the electronic discrimination. The results from the two methods were compared and are in agreement within the experimental uncertainty.p. 1238-1241openAccessamericium 241coincidence methodsextrapolationproportional countersalpha detectionspectrometersstandardsArtigo de periódico6410.1016/j.apradiso.2006.02.028https://orcid.org/0000-0003-2478-5757https://orcid.org/0000-0001-8407-9833