Precise atomic mass differences using peak-matching by computer

J. O. Meredith; F. C.G. Southon; R. C. Barber; P. Williams; H. E. Duckworth

doi:10.1016/0020-7381(73)83013-X

Precise atomic mass differences using peak-matching by computer

J. O. Meredith, F. C.G. Southon, R. C. Barber, P. Williams, H. E. Duckworth

Research output: Contribution to journal › Article › peer-review

14 Scopus citations

Abstract

A high resolution mass spectrometer has been used to obtain precise atomic mass differences by means of an improved peak-matching technique in which off-line computer analysis is used to determine the matching condition. The procedure retains the improved signal-to-noise ratio achieved with a signal averager, but offers improved precision in a given operating time and removes further human judgment of the matched condition. Moreover, it makes possible a comparison between the precision obtained experimentally and the theoretical limit (derived here) determined by the instrument resolution and the number of ions detected. Representative results for doublet spacings are presented for which the precision (δM/M ∼ 5 × 10^-9) approaches the statistical limit.

Original language	English (US)
Pages (from-to)	359-370
Number of pages	12
Journal	International Journal of Mass Spectrometry and Ion Physics
Volume	10
Issue number	4
DOIs	https://doi.org/10.1016/0020-7381(73)83013-X
State	Published - Feb 1973
Externally published	Yes

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10.1016/0020-7381(73)83013-X

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title = "Precise atomic mass differences using peak-matching by computer",

abstract = "A high resolution mass spectrometer has been used to obtain precise atomic mass differences by means of an improved peak-matching technique in which off-line computer analysis is used to determine the matching condition. The procedure retains the improved signal-to-noise ratio achieved with a signal averager, but offers improved precision in a given operating time and removes further human judgment of the matched condition. Moreover, it makes possible a comparison between the precision obtained experimentally and the theoretical limit (derived here) determined by the instrument resolution and the number of ions detected. Representative results for doublet spacings are presented for which the precision (δM/M ∼ 5 × 10-9) approaches the statistical limit.",

author = "Meredith, {J. O.} and Southon, {F. C.G.} and Barber, {R. C.} and P. Williams and Duckworth, {H. E.}",

note = "Funding Information: * This research was supported by the National Research Council of Canada. ** Present address: University of Winnipeg, Winnipeg, Manitoba, Canada, Copyright: Copyright 2014 Elsevier B.V., All rights reserved.",

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doi = "10.1016/0020-7381(73)83013-X",

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AU - Meredith, J. O.

AU - Southon, F. C.G.

AU - Barber, R. C.

AU - Williams, P.

AU - Duckworth, H. E.

N1 - Funding Information: * This research was supported by the National Research Council of Canada. ** Present address: University of Winnipeg, Winnipeg, Manitoba, Canada, Copyright: Copyright 2014 Elsevier B.V., All rights reserved.

PY - 1973/2

Y1 - 1973/2

N2 - A high resolution mass spectrometer has been used to obtain precise atomic mass differences by means of an improved peak-matching technique in which off-line computer analysis is used to determine the matching condition. The procedure retains the improved signal-to-noise ratio achieved with a signal averager, but offers improved precision in a given operating time and removes further human judgment of the matched condition. Moreover, it makes possible a comparison between the precision obtained experimentally and the theoretical limit (derived here) determined by the instrument resolution and the number of ions detected. Representative results for doublet spacings are presented for which the precision (δM/M ∼ 5 × 10-9) approaches the statistical limit.

AB - A high resolution mass spectrometer has been used to obtain precise atomic mass differences by means of an improved peak-matching technique in which off-line computer analysis is used to determine the matching condition. The procedure retains the improved signal-to-noise ratio achieved with a signal averager, but offers improved precision in a given operating time and removes further human judgment of the matched condition. Moreover, it makes possible a comparison between the precision obtained experimentally and the theoretical limit (derived here) determined by the instrument resolution and the number of ions detected. Representative results for doublet spacings are presented for which the precision (δM/M ∼ 5 × 10-9) approaches the statistical limit.

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Precise atomic mass differences using peak-matching by computer

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