Published February 1977 | Version v1
Report Open

Evaluation of precision in measurements of uranium isotope ratio by thermionic mass spectrometry

Creators

Description

The parameters which affect the precision and accuracy of uranium isotopic ratios measurements by thermionic mass spectrometry are discussed. A statistical designed program for the analysis of the internal and external variances are presented. It was done an application of this statistical methods, in order to get mass discrimination factor, and its standard mean deviation, by using some results already published for 235U/238U ratio in NBS uranium samples, and natural uranium

Availability note (English)

MF available from INIS under the Report Number.

Abstract (Portuguese)

Sao discutidos os parametros que afetam diretamente a precisao e exatidao de medidas de razao isotopica em uranio, por espectrometria de massa termoionica. Metodos estatisticos adequados sao apresentados para uma analise das variancias internas e externa. Uma aplicacao desses metodos para o calculo do fator de discriminacao de massa e respectivo desvio padrao medio e feita, utilizando resultados publicados para a razao 235U/238U em amostras-padrao de uranio, e em amostras de uranio natural

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Additional details

Additional titles

Original title (Portuguese)
Avaliacao da precisao em medidas de razao isotopica de uranio por espectrometria de massa termoionica

Publishing Information

Imprint Pagination
19 p.
Journal Issue
no. 465
Series
Publicacao IEA.
Report number
IEA--465

INIS

Country of Publication
Brazil
Country of Input or Organization
Brazil
INIS RN
8331917
Subject category
S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
Descriptors DEI
ACCURACY; ISOTOPE RATIO; MASS SPECTROSCOPY; URANIUM; URANIUM 235; URANIUM 238
Descriptors DEC
ACTINIDE NUCLEI; ACTINIDES; ALPHA DECAY RADIOISOTOPES; ELEMENTS; EVEN-EVEN NUCLEI; EVEN-ODD NUCLEI; HEAVY NUCLEI; ISOMERIC TRANSITION ISOTOPES; ISOTOPES; METALS; MINUTES LIVING RADIOISOTOPES; NUCLEI; RADIOISOTOPES; SPECTROSCOPY; URANIUM ISOTOPES; YEARS LIVING RADIOISOTOPES