Linked scan at constant E2/V: Difference between revisions
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A [[linked scan]] performed on a [[sector instrument]] that incorporates at least one [[electric sector]] plus one [[magnetic sector]]. The [[electric sector]] field, E, and the [[accelerating voltage]], V, are scanned simultaneously, so as to maintain the ratio E<sup>2</sup>/V at a constant value. This [[linked scan]] recordss a [[product ion]] spectrum of dissociation or other reactions occurring in a [[field free region]] (FFR) preceding the two sectors. The term "E<sup>2</sup>/V linked scan" is not recommended. | A [[linked scan]] performed on a [[sector instrument]] that incorporates at least one [[electric sector]] plus one [[magnetic sector]]. The [[electric sector]] field, E, and the [[accelerating voltage]], V, are scanned simultaneously, so as to maintain the ratio E<sup>2</sup>/V at a constant value. This [[linked scan]] recordss a [[product ion]] spectrum of dissociation or other reactions occurring in a [[field free region]] (FFR) preceding the two sectors. The term "E<sup>2</sup>/V linked scan" is not recommended. | ||
The term E2/V linked scan is deprecated. | |||
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Revision as of 15:59, 3 August 2006
Obsolete Template
Orange Book Entry
This may be performed with a sector instrument incorporating at least one electric sector plus one magnetic sector. The electric sector field, E, and the accelerating voltage, V, are scanned simultaneously so as to maintain E 2/V ratio at constant value equal to the value of this ratio that transmits the main beam ions through the electric sector. The magnetic sector field is set at a fixed value such that main-beam ions of a predetermined mass/charge ratio are transmitted by the magnetic sector; these preselected main-beam ions are the precursor ions whose fragment ion spectrum is required. The fragmentation reactions thus observed occur in a field-free region traversed before the two sectors scanned in this way. The term 'E 2/V linked scan????????????????????????? is not recommmended.
