A Quadrupole mass spectrometer for resolution of low mass isotopes |
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Authors: | Jeyan Sreekumar Thomas J Hogan Stephen Taylor Phillip Turner Christopher Knott |
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Institution: | (1) Department of Electrical Engineering and Electronics, University of Liverpool, Brownlow Hill, Liverpool, L69 3GJ, UK; |
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Abstract: | The qualitative and quantitative identification of low mass isotopes in the mass range 1–6 u poses certain difficulties when
attempting to achieve the required resolution with an instrument suitable for deployment within a process environment. Certain
adjacent species present in the process sample (HT and D2) require a resolution greater than 930 to achieve an accurate measurement. We demonstrate here through simulation techniques
that this level of performance required is unachievable using commercially available instruments. Using previously reported
simulation techniques, this article demonstrates how the required performance for resolving the low mass isotopes can be achieved
by a quadrupole mass spectrometer (QMS), which incorporates a quadrupole mass filter (QMF) constructed from hyperbolic electrodes
and operated in zone 3 of the Mathieu stability diagram. |
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Keywords: | |
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