Difference between revisions of "Magnetic field scan"

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:''Note 1'': The magnetic field scan is sometimes called B-scan, but this is a misnomer since the symbol B denotes the [[wikipedia:magnetic flux|magnetic flux]] density. The magnetic field strength H in a vacuum is defined in SI units as H = (1/&mu;<sub>0</sub>) B -M where &mu;<sub>0</sub> is the [[wikipedia:vacuum permeability|magnetic constant]] or permeability of the vacuum and M the [[wikipedia:magnetization|magnetization]]. B is often wrongly referred to as "magnetic field strength."
 
:''Note 1'': The magnetic field scan is sometimes called B-scan, but this is a misnomer since the symbol B denotes the [[wikipedia:magnetic flux|magnetic flux]] density. The magnetic field strength H in a vacuum is defined in SI units as H = (1/&mu;<sub>0</sub>) B -M where &mu;<sub>0</sub> is the [[wikipedia:vacuum permeability|magnetic constant]] or permeability of the vacuum and M the [[wikipedia:magnetization|magnetization]]. B is often wrongly referred to as "magnetic field strength."
  
:''Note 2'': A sector magnetic field produces a momentum/charge spectrum of an ion beam, but if all ions have the same translational energy this is equivalent to a mass spectrum. The force F on a particle with charge q and velocity ''v'' is F = q(''v'' B).
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:''Note 2'': A sector magnetic field produces a momentum/charge spectrum of an ion beam, but if all ions have the same translational energy this is equivalent to a mass spectrum. The force F on a particle with charge q and velocity ''v'' is F = q(''v'' x B).
  
 
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Latest revision as of 18:56, 27 July 2022

IUPAC RECOMMENDATIONS 2013
Magnetic field scan
Method of producing a mass spectrum from a mono-energetic ion beam by varying the strength of the magnetic field in a sector mass spectrometer.
Note 1: The magnetic field scan is sometimes called B-scan, but this is a misnomer since the symbol B denotes the magnetic flux density. The magnetic field strength H in a vacuum is defined in SI units as H = (1/μ0) B -M where μ0 is the magnetic constant or permeability of the vacuum and M the magnetization. B is often wrongly referred to as "magnetic field strength."
Note 2: A sector magnetic field produces a momentum/charge spectrum of an ion beam, but if all ions have the same translational energy this is equivalent to a mass spectrum. The force F on a particle with charge q and velocity v is F = q(v x B).
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.

Magnetic field scan

The usual method of producing a momentum (mass) spectrum in instruments is by varying the strength of the magnetic field.

IUPAC 1997 Orange Book Chapter 12
Index of Orange Book Terms


Gold Book

GOLD BOOK DEFINITION

IUPAC. Compendium of Chemical Terminology, 2nd ed. (the Gold Book). Compiled by A. D. McNaught and A.Wilkinson. Blackwell Scientific Publications, Oxford (1997).

Magnetic field scan

http://goldbook.iupac.org/M03682.html

The usual method of producing a momentum (mass) spectrum, by varying the strength of the magnetic field.

Source: PAC, 1991, 63, 1541 (Recommendations for nomenclature and symbolism for mass spectroscopy (including an appendix of terms used in vacuum technology). (Recommendations 1991)) on page 1550

IUPAC Gold Book
Index of Gold Book Terms