Time-of-flight mass spectrometer: Difference between revisions

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Instrument that separates ions by ''[[m/z]]'' in a [[field-free region]] after acceleration to a fixed acceleration energy.
|acronym=([[TOF-MS]])
|def=[[Mass spectrometer]] that separates [[ion]]s by ''[[m/z]]'' in a field-free region after acceleration through a fixed accelerating potential. Ions of the same initial translational energy and different ''m/z'' require different times to traverse a given distance in the field-free region.
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Time-of-flight mass spectrometer An instrument making use of the fact that ions of different [[mass/charge ratio]], and all with the same initial [[Translational Energy|translational energy]], require different times to traverse a given distance in a field-free region.
Time-of-flight mass spectrometer An instrument making use of the fact that ions of different [[mass/charge ratio]], and all with the same initial [[Translational Energy|translational energy]], require different times to traverse a given distance in a field-free region.
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{{asms|
An analytical instrument in which ions are formed and accelerated and their flight times measured to determine their mass.  Time-of-flight mass spectrometers can be distinguished by those that accelerate ions to constant momentum (in which case flight times are linear with mass) and constant energy (in which case flight times are proportional to the square root of mass).  Time-of-flight mass spectrometers were originally known as [[velocitron]]s.
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[[Category:M/z Separation]]
[[Category:M/z Separation]]
[[Category:Orange Book term]]
{{DEFAULTSORT:Time-Of-Flight Mass Spectrometer}}

Revision as of 15:16, 8 January 2014

IUPAC RECOMMENDATIONS 2013
Time-of-flight mass spectrometer (TOF-MS)
Mass spectrometer that separates ions by m/z in a field-free region after acceleration through a fixed accelerating potential. Ions of the same initial translational energy and different m/z require different times to traverse a given distance in the field-free region.
Related Term(s):
Reference(s):

IUPAC. Analytical Division. Compendium of Analytical Nomenclature (the Orange Book). Definitive Rules, 1979. Compiled by J. Inczédy, T. Lengyel, A. M. Ure. Blackwell Scientific Publications, Oxford (1997). On-line corrected version: http://www.iupac.org /publications/analytical compendium (2000).

IUPAC. Compendium of Chemical Terminology, 2nd ed. (the Gold Book). Compiled by A. D. McNaught and A.Wilkinson. Blackwell Scientific Publications, Oxford (1997). XML on-line corrected version: http://goldbook.iupac.org (2006-) created by M. Nic, J. Jirat, B. Kosata; updates compiled by A. Jenkins.

From Definitions of Terms Relating to Mass Spectrometry (IUPAC Recommendations 2013); DOI: 10.1351/PAC-REC-06-04-06 © IUPAC 2013.

Index of Recommended Terms

 




Orange Book

ORANGE BOOK DEFINITION

IUPAC. Analytical Division. Compendium of Analytical Nomenclature (the Orange Book). Definitive Rules, 1979 (see also Orange Book 2023)

Time-of-flight mass spectrometer

Time-of-flight mass spectrometer An instrument making use of the fact that ions of different mass/charge ratio, and all with the same initial translational energy, require different times to traverse a given distance in a field-free region.

IUPAC 1997 Orange Book Chapter 12
Index of Orange Book Terms