Difference between revisions of "Nier-Johnson geometry"

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{{Final
Arrangement for a [[Double-focusing Mass Spectrometer|double-focusing mass spectrometer]] in which a deflection of /2 radians in a radial [[electric field]] analyzer is followed by a [[Magnetic Deflection|magnetic deflection]] of /3 radians.
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|def=Arrangement for a [[double-focusing mass spectrometer]] in which a deflection of π/2 rad in a radial electrostatic energy analyzer is combined with a magnetic deflection of π/3 rad, thus providing a single point of focus for ions of the same ''[[m/z]]'' but with spreads in both trajectory direction and translational energy.
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|rel=[[Mattauch-Herzog geometry]]
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|ref=From {{obgb}}
  
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using additional information from
  
== [[Orange Book]] Entry ==
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W. H. Johnson, A. O. Nier. Phys. Rev. 105, 1014 (1957). (http://dx.doi.org/10.1103/PhysRev.105.1014 )
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}}
  
An arrangement for a [[Double-focusing Mass Spectrometer|double-focusing mass spectrometer]] in which a deflection of /2 radians in a radial electrostatic field analyser is followed by a [[Magnetic Deflection|magnetic deflection]] of /3 radians. The [[Electric Sector|electrostatic analyser]] uses a symmetrical object-image arrangement and the magnetic analyser is used asymmetrically.
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<!-- Orange Book -->
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{{orange|
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An arrangement for a [[double-focusing mass spectrometer]] in which a deflection of &pi;/2 radians in a radial electrostatic field analyser is followed by a [[magnetic deflection]] of &pi;/3 radians. The [[electrostatic analyser]] uses a symmetrical object-image arrangement and the magnetic analyser is used asymmetrically.
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}}
  
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{{gold|
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http://goldbook.iupac.org/N04141.html
  
== Related Terms ==
+
An arrangement for a double-focusing mass spectrometer in which a deflection of &pi;/2 radians in a radial electrostatic field analyser is followed by a magnetic deflection of &pi;/3 radians. The electrostatic analyser uses a symmetrical object-image arrangement and the magnetic analyser is used asymmetrically.
  
*[[Double-focusing Mass Spectrometer]]
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Source:
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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 1546
  
*[[Forward Geometry]]
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[[Orange Book]], p. 201
 
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}}
*[[Reverse Geometry]]
 
 
 
*[[Electric Sector]]
 
 
 
*[[Magnetic Sector]]
 
 
 
== External Links ==
 
 
 
*[[Wikipedia:Alfred O. C. Nier]]
 
  
 
[[Category:M/z Separation]]
 
[[Category:M/z Separation]]

Latest revision as of 03:05, 7 January 2014

IUPAC RECOMMENDATIONS 2013
Nier-Johnson geometry
Arrangement for a double-focusing mass spectrometer in which a deflection of π/2 rad in a radial electrostatic energy analyzer is combined with a magnetic deflection of π/3 rad, thus providing a single point of focus for ions of the same m/z but with spreads in both trajectory direction and translational energy.
Related Term(s): Mattauch-Herzog geometry
Reference(s):

From 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.

using additional information from

W. H. Johnson, A. O. Nier. Phys. Rev. 105, 1014 (1957). (http://dx.doi.org/10.1103/PhysRev.105.1014 )

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.

Nier-Johnson geometry

An arrangement for a double-focusing mass spectrometer in which a deflection of π/2 radians in a radial electrostatic field analyser is followed by a magnetic deflection of π/3 radians. The electrostatic analyser uses a symmetrical object-image arrangement and the magnetic analyser is used asymmetrically.

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).

Nier-Johnson geometry

http://goldbook.iupac.org/N04141.html

An arrangement for a double-focusing mass spectrometer in which a deflection of π/2 radians in a radial electrostatic field analyser is followed by a magnetic deflection of π/3 radians. The electrostatic analyser uses a symmetrical object-image arrangement and the magnetic analyser is used asymmetrically.

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 1546

Orange Book, p. 201

IUPAC Gold Book
Index of Gold Book Terms