Mass-analyzed ion kinetic energy spectrometry: Difference between revisions

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{{DefName|In a [[reverse geometry]] [[sector mass spectrometer]], the measurement of the kinetic energies of the fragment ions formed in the region between the magnteic and electric sectors. A beam of [[precursor ion]s is isolated with a constant B value in the [[magnetic sector]] and the field E in the electric is scanned to determine the fragment ion masses. The width of the resulting peaks gives the kinetic energy released during fragmentation}}
{{Final
|acronym=(MIKES)
|def=Deprecated: [[direct analysis of daughter ions]] ([[DADI]]).


Procedure by which translational energy spectra are obtained from a [[sector mass spectrometer]]
that incorporates at least one magnetic sector plus one electric sector in [[reverse geometry]] (a magnetic sector followed by an electric sector).


== References ==
:''Note 1'': In this context, kinetic energy is interpreted as translational rather than vibrational or rotational kinetic energy.


[[Reference:Ervin 2001]]
:''Note 2'': The [[accelerating potential]], V, and the magnetic flux density, B, are set at fixed values to ''m/z'' select the [[precursor ion]]s, which are then allowed to dissociate or to react in a [[field-free region]] between the two sectors. The translational energy-to-charge ratios of the various product ions are analyzed by scanning the electric sector field E. The width of a [[product ion]] spectral peak is related to the [[kinetic energy release distribution]] for the dissociation process.
 
|rel=
[[Reference:Sleno 2004]]
|ref=J. H. Beynon, R. G. Cooks. Res. Dev. 22, 26 (1971).
}}


[[Category:M/z Separation]]
[[Category:M/z Separation]]


[[Category:Reactions]]
[[Category:Reactions]]
{{DEFAULTSORT:Mass-Analyzed Ion Kinetic Energy Spectrometry}}

Latest revision as of 22:21, 24 October 2013

IUPAC RECOMMENDATIONS 2013
Mass-analyzed ion kinetic energy spectrometry (MIKES)
Deprecated: direct analysis of daughter ions (DADI).

Procedure by which translational energy spectra are obtained from a sector mass spectrometer that incorporates at least one magnetic sector plus one electric sector in reverse geometry (a magnetic sector followed by an electric sector).

Note 1: In this context, kinetic energy is interpreted as translational rather than vibrational or rotational kinetic energy.
Note 2: The accelerating potential, V, and the magnetic flux density, B, are set at fixed values to m/z select the precursor ions, which are then allowed to dissociate or to react in a field-free region between the two sectors. The translational energy-to-charge ratios of the various product ions are analyzed by scanning the electric sector field E. The width of a product ion spectral peak is related to the kinetic energy release distribution for the dissociation process.
Related Term(s):
Reference(s):

J. H. Beynon, R. G. Cooks. Res. Dev. 22, 26 (1971).

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

 


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