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Roger Wellum

13 works· latest 2010· 2 institutionscluster: provisional

h-index12

i1013

Citations545

Works here13

Most cited in this library

Isotopic “fingerprints” for natural uranium ore samples1999 · 192 citations
The isotopic composition of natural uranium samples—Measurements using the new n(233U)/n(236U) double spike IRMM-36362007 · 99 citations
A new series of uranium isotope reference materials for investigating the linearity of secondary electron multipliers in isotope mass spectrometry2009 · 56 citations
Re-certification of a series of uranium isotope reference materials: IRMM-183, IRMM-184, IRMM-185, IRMM-186 and IRMM-1872005 · 44 citations
Evaluating the status of uranium isotope ratio measurements using an inter-laboratory comparison campaign2007 · 26 citations

Works

13 shown

An inter-calibration campaign using various selected Pu spike isotopic reference materials

Journal of Radioanalytical and Nuclear Chemistry·2010·9 authors

17citations

Demonstrating the metrological compatibility of uranium isotope amount ratio measurement results obtained by GSMS, TIMS and MC-ICPMS techniques

International Journal of Mass Spectrometry·2010·7 authors

15citations

Certification of a new series of gravimetrically prepared synthetic reference materials for n(236U)/n(238U) isotope ratio measurements

Nuclear Instruments and Methods in Physics Research Section B Beam Interactions with Materials and Atoms·2009·8 authors

15citations

A new series of uranium isotope reference materials for investigating the linearity of secondary electron multipliers in isotope mass spectrometry

International Journal of Mass Spectrometry·2009·9 authors

56citations

Application of consistency checking to evaluation of uncertainty in multiple replicate measurements

Accreditation and Quality Assurance·2008·3 authors

15citations

The isotopic composition of natural uranium samples—Measurements using the new n(233U)/n(236U) double spike IRMM-3636

International Journal of Mass Spectrometry·2007·7 authors

99citations

Evaluating the status of uranium isotope ratio measurements using an inter-laboratory comparison campaign

International Journal of Mass Spectrometry·2007·5 authors

26citations

Re-certification of a series of uranium isotope reference materials: IRMM-183, IRMM-184, IRMM-185, IRMM-186 and IRMM-187

International Journal of Mass Spectrometry·2005·6 authors

44citations

Evaluation of the n(235U)/n(238U) isotope ratio measurements in a set of uranium samples by thermal ionization mass spectrometry

International Journal of Mass Spectrometry·2005·7 authors

19citations

Preparation and certification of synthetic uranium isotope mixtures with 236U/238U ratios of 10–6, 10–7, 10–8

Journal of Analytical Atomic Spectrometry·2005·6 authors

17citations

HOW TO TREAT CORRELATION IN THE UNCERTAINTY BUDGET, WHEN COMBINING RESULTS FROM DIFFERENT MEASUREMENTS

Advanced Mathematical and Computational Tools in Metrology (AMCTM)·2001·3 authors·other

12citations

Isotopic “fingerprints” for natural uranium ore samples

International Journal of Mass Spectrometry·1999·5 authors

192citations

The isotopic composition of commercially available uranium chemical reagents

Journal of Analytical Atomic Spectrometry·1999·4 authors

18citations