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  • BSI
    20/30409963 DC BS ISO 17862. Surface chemical analysis. Secondary ion mass spectrometry. Linearity of intensity scale in single ion counting time-of-flight mass analysers
    Edition: 2020
    $44.66
    / user per year

Description of 20/30409963 DC 2020

This International Standard specifies a method for determining the maximum count rate for an acceptable limit of divergence from linearity of the intensity scale in single ion counting time-of-flight (TOF) secondary ion mass spectrometers using a test based on isotopic ratios in spectra from poly(tetrafluoroethylene) (PTFE). It also includes a method to correct for intensity nonlinearity arising from intensity lost from a microchannel plate (MCP) or scintillator and photomultiplier followed by a time-to-digital converter (TDC) detection system caused by secondary ions arriving during its dead-time. The correction can increase the intensity range for 95 % linearity by a factor of up to more than 50 so that a higher maximum count rate can be employed for those spectrometers for which the relevant correction formulae have been shown to be valid. This International Standard can also be used to confirm the validity of instruments in which the dead-time correction is already made but in which further increases can or cannot be possible.



Standard Number20/30409963 DC
TitleBS ISO 17862. Surface chemical analysis. Secondary ion mass spectrometry. Linearity of intensity scale in single ion counting time-of-flight mass analysers
StatusDefinitive
Publication Date2020-04-13
Identical National Standard OfISO/DIS 17862
DescriptorsChemical analysis and testing, Secondary, Calibration, Ions, Surfaces, Control samples, Mass spectrometers, Surface chemistry, Mass spectrometry
ICS71.040.40 Chemical analysis
CommitteeCII/60
PublisherBSI
Pages33

About BSI

BSI Group, also known as the British Standards Institution is the national standards body of the United Kingdom. BSI produces technical standards on a wide range of products and services and also supplies certification and standards-related services to businesses.
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