Mass-analyzed ion kinetic energy spectrometry: Difference between revisions

Revision as of 13:26, 14 December 2005

Mass-analyzed ion kinetic energy spectrometry
DRAFT DEFINITION
Spectra are obtained from a sector mass spectrometer that incorporates at least one magnetic sector plus one electric sector in reverse geometry. The accelerating voltage, V, and the magnetic sector field, B, are set at fixed values to select the precursor ions, which are then allowed to dissociate or to react in a field free region (FFR) between the two sectors. The kinetic energy product ions of m/z selected [[[precursor ion]]s is analyzed by scanning the electric sector field, E. The width of the product ion spectrum peaks is related to the kinetic energy release distribution (KERD) for the dissociation process.
Considered between 2004 and 2006 but not included in the 2006 PAC submission
This is an unofficial draft definition presented for information and comment. Recommended terms \| Full list of terms

See additional comments on the Mass-analyzed ion kinetic energy spectrometry discussion page (archive of discussion between 2004 and 2006)

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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}}
+{{DefName|
+Spectra are obtained from a [[sector mass spectrometer]] that incorporates at least one [[magnetic sector]] plus one [[electric sector]] in [[reverse geometry]]. The accelerating voltage, V, and the [[magnetic sector]] field, B,  are set at fixed values to select the precursor ions, which are then allowed to dissociate or to react in a [[field free region]] (FFR) between the two sectors. The kinetic energy [[product ion]]s of ''[[m/z]]'' selected [[[precursor ion]]s is analyzed by scanning the [[electric sector]] field, E. The width of the [[product ion]] spectrum peaks is related to the [[kinetic energy release distribution]] ([[KERD]]) for the dissociation process.
+}}
 {{Disc}}
+== Related Terms ==
+*[[Sector Mass Spectrometer]]
+*[[Field Free Region]]
+*[[Product Ion Spectrum]]
+*[[Kinetic Energy Release Distribution]]
 == External Links ==