Linked scan at constant B2/E
| DRAFT DEFINITION |
| Linked scan at constant B2/E |
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A linked scan at constant B2/E may be performed on a sector instrument that incorporates at least one electric sector plus one magnetic sector. It involves holding the accelerating voltage fixed and scanning the magnetic field (B) and the electric field (E) simultaneously so as to maintain the ratio B2/E at a constant value. This constant value corresponds to the ratio of the two fields which transmit main-beam ions of predetermined mass-to-charge ratio; these pre-selected main-beam ions are the fragment ions whose precursor ion spectrum is required. The fragmentation reactions thus observed occur in a field-free region traversed before the two sectors scanned in this way. This term should not be used without prior explanation of the meanings of B and E. The term "B2/E linked scan" is not recommended. |
| Considered between 2004 and 2006 but not included in the 2006 PAC submission |
| This is an unofficial draft definition presented for information and comment. |
