Linked scan at constant B/E: Difference between revisions
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A linked scan at constant B/E may be performed on a [[sector mass spectrometer]] that incorporates at least one [[magnetic sector]] plus one [[electric sector]]. The [[magnetic field]] B and the [[electric field]] field E are scanned simultaneously while the accelerating voltage V is held constant, so as to maintain the ratio of the two fields constant. This linked scan may record a [[product ion spectrum]] of dissociation or other reactions occurring in a [[field free region]] preceding the two sectors. | A linked scan at constant B/E may be performed on a [[sector mass spectrometer]] that incorporates at least one [[magnetic sector]] plus one [[electric sector]]. The [[magnetic field]] B and the [[electric field]] field E are scanned simultaneously while the accelerating voltage V is held constant, so as to maintain the ratio of the two fields constant. This linked scan may record a [[product ion spectrum]] of dissociation or other reactions occurring in a [[field free region]] preceding the two sectors. | ||
The term B/E linked scan is deprecated. | |||
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Revision as of 15:59, 3 August 2006
Obsolete Template
Orange Book Entry
This can be performed with a sector instrument incorporating at least one magnetic sector and one electric sector. The magnetic sector field strength, B, and the electric sector field strength, E, are scanned simultaneously, while holding the accelerating voltage, V, constant, so as to maintain the ratio B/E constant. This constant value is determined by the ratio of the two field strengths required to transmit main-beam ions of predetermined mass/charge ratio. These preselected main-beam ions are the precursor ions whose fragment ion spectrum is required. The term B/E linked scan is not recommended.
