Electron capture dissociation: Difference between revisions

Revision as of 00:33, 13 December 2005

Electron capture dissociation
DRAFT DEFINITION
A process in which multiply protonated molecules interact with low energy electrons. Capture of an electron leads a change in charge state with the production of the (M + nH) ^(n-1)+ radical cation, which readily fragments.
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 Electron capture dissociation discussion page (archive of discussion between 2004 and 2006)

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 {{DefName|
-An ion/electron interaction wherein a protonated molecule with multiple-charge (designated, e.g. [M+nH]<sup>n+</sup>) combines with an electron of low translational energy (usually less than 3 eV) to form an ion with odd-electron sites which immediately bring about [[Charge-Mediated Fragmentation|charge-mediated fragmentation]]. Particularly when the protonated molecule is polypeptide, the fragmentation exclusively occurs at the peptide backbone if the polypeptide does not contain cystine residues. This term should be distinguished from '[[electron-induced excitation in organics]] ([[EIEIO]])' which involves excitation of the reactant ion with an electron beam.
+A process in which [[multiply protonated molecule]]s interact with low energy electrons. Capture of an electron leads a change in charge state with the production of the (M + nH) <sup>(n-1)+</sup> [[radical cation]], which readily fragments. }}
-}}
 {{Disc}}
+== Related Terms ==
+*[[EIEIO]]
 == External Links ==