Linked scan at constant B(1-(E/E0))1/2/E: Difference between revisions

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{{Def|Linked Scan at Constant B[1-(E/E<sub>0</sub>)]<sup>1/2</sup>/E
=Linked scan at constant <math>\frac{B(1 - E)^{1/2}}{E}</math>=
|A linked scan at constant B[1-(E/E<sub>0</sub>)]<sup>1/2</sup>/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 electric field (E) simultaneously, so as to maintain the quantity B[1-(E/E<sub>0</sub>)]<sup>1/2</sup>/E at a constant value. This constant value is equal to B<sub>3</sub>/E<sub>0</sub> , where E<sub>0</sub> and B<sub>3</sub> are, respectively, the electric sector field and magnetic sector field required to transmit m<sub>3</sub> ions in the main ion beam; m<sub>3</sub> represents the mass (m<sub>1</sub>-m<sub>2</sub>) of the selected neutral fragment whose precursor (parent) ion spectrum is required. The fragmentation reactions so observed occurred 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, E and E<sub>0</sub>.
 
The term "B[1-(E/E0)]1/2/E linked scan" is not recommended.
:
 
{{Def|
ref={{ob}}
|rel=[[Linked scan]]
}}
}}


== [[Orange Book]] Entry ==
<!-- Orange Book -->
 
{{orange|
This can be performed with a sector instrument incorporating at least one electric sector plus one magnetic 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 [1- (E /E 0)]1/2 /E constant. This constant value is equal to B3/E0, where E0 and B3 are respectively the electric and magnetic sector fields required to transmit M3+ ions in the main ion beam; m3 represents the mass (m1-m2) of the selected neutral fragment M3 whose precursor 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 'B [1- (E /E 0)]1/2/E linked scan????????????????????????? is not recommended.
This can be performed with a [[sector instrument]] incorporating at least one [[electric sector]] plus one [[magnetic 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 <math>\frac{B(1 - E)^{1/2}}{E}</math> constant. This constant value is equal to B3/E0, where E0 and B3 are respectively the electric and magnetic sector fields required to transmit M3+ ions in the main ion beam; m3 represents the mass (m1-m2) of the selected neutral fragment M3 whose precursor 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 <math>\frac{B(1 - E)^{1/2}}{E}</math> linked scan is not recommended.
}}


[[Category:Sequential m/z Separation]]
[[Category:Sequential m/z Separation]]
{{DEFAULTSORT:Linked Scan At Constant B(1-(E/E0))1/2/E}}

Latest revision as of 16:57, 3 July 2025

Linked scan at constant B(1−E)1/2E

DRAFT DEFINITION
Linked scan at constant B(1-(E/E0))1/2/E
Related Term(s): Linked scan
Reference(s):

IUPAC. Analytical Division. Compendium of Analytical Nomenclature (the Orange Book). Definitive Rules, 1979. Compiled by J. Inczdy, T. Lengyel, A. M. Ure. Blackwell Scientific Publications, Oxford (1997). On-line corrected version: http://www.iupac.org /publications/analytical compendium (2000).

This is an unofficial draft definition presented for information and comment.

Recommended terms | Full list of terms

 

Orange Book

ORANGE BOOK DEFINITION

IUPAC. Analytical Division. Compendium of Analytical Nomenclature (the Orange Book). Definitive Rules, 1979 (see also Orange Book 2023)

Linked scan at constant B(1-(E/E0))1/2/E

This can be performed with a sector instrument incorporating at least one electric sector plus one magnetic 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(1−E)1/2E constant. This constant value is equal to B3/E0, where E0 and B3 are respectively the electric and magnetic sector fields required to transmit M3+ ions in the main ion beam; m3 represents the mass (m1-m2) of the selected neutral fragment M3 whose precursor 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 B(1−E)1/2E linked scan is not recommended.

IUPAC 1997 Orange Book Chapter 12
Index of Orange Book Terms
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