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Geochemical Journal
Geochemical Journal An open access journal for geochemistry
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Determination of relative Faraday cup efficiency factor using  exponential law mass fractionation model for multiple collector  thermal ionization mass spectrometry

Takashi Miyazaki, Bogdan Stefanov Vaglarov, Jun-Ichi Kimura
Geochemical Journal, Vol. 50, No. 5, P. 445-447, 2016

ABSTRACT

A new method for determining the relative Faraday cup efficiency (RFCE) for nine Faraday cups has been developed using 86Sr, 87Sr, and 88Sr isotope signals, and the exponential mass fractionation law. Ten different Faraday cup configurations, combined with a nonlinear solver calculation module in an Excel spreadsheet, allowed for accurate RFCE determination. This method serves as a useful diagnostic tool for characterizing the functionality of Faraday cups.

KEYWORDS

Faraday cup, efficiency, TIMS, Sr isotope, exponential

Supplementary Materials(file)

https://www.jstage.jst.go.jp/article/geochemj/50/5/50_2.0439/_supplement/_download/50_2.0439_1.pdf

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