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
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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

Status : Current, Draft for public comment   Published : April 2020

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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
StatusCurrent, Draft for public comment
Publication Date13 April 2020
Normative References(Required to achieve compliance to this standard)No other standards are normatively referenced
Informative References(Provided for Information)ISO 23830, ISO 13084, ISO 18116
International RelationshipsISO/DIS 17862
Draft Expiry Date06 June 2020
DescriptorsSecondary, Calibration, Ions, Control samples, Chemical analysis and testing, Mass spectrometers, Mass spectrometry, Surfaces, Surface chemistry
ICS71.040.40
Title in FrenchAnalyse chimique des surfaces — Spectrométrie de masse des ions secondaires — Linéarité de l'échelle d'intensité des analyseurs de masse à temps de vol pour comptage des ions individuels
CommitteeCII/60
PublisherBSI
FormatA4
DeliveryYes
Pages33
File Size2.156 MB
NotesWarning: this draft is not current beyond its expiry date for comments.
Price£20.00


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