E/2 mass spectrum: Difference between revisions

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== [[Orange Book]] Entry ==
<!-- Orange Book -->
{{orange|
M<sup>2</sup><sup>+</sup> + X &rarr; M<sup>+</sup> + X<sup>+</sup>


M<sup>2+</sup> + X &rarr; M<sup>+</sup> + X<sup>+</sup>
Processes of the charge-stripping type: M<sup>+</sup> + X &rarr; M<sup>2+</sup> + X + e occurring in [[Collision Cell|collision cell]] (containing gas X) located in a [[Field Free Region|field-free region]] preceding a [[Magnetic Sector|magnetic]] and [[Electric Sector|electric sector]] combination placed in either order, may be detected as follows;- if the instrument slits are wide and if the [[Electric Sector|electric sector]] field is set to half the value required to transmit the main ion beam, the only ions [[Transmission|transmitted]] will be those with [[Kinetic Energy|kinetic energy]]/charge ratio half, or almost half, that of the main ion beam. The [[Product Ion|product ion]]s of the above [[Charge Stripping Reaction|charge stripping]] process fulfil that condition. If the magnetic field, B, is scanned, a [[mass spectrum]] of such doubly-charged product ions and thus of their singly-charged precursors is obtained. Such a spectrum is termed a E/2 mass spectrum.
 
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Processes of the charge-stripping type: M<sup>+</sup> + X &rarr; M<sup>2+</sup> + X + e occurring in [[Collision Cell|collision cell]] (containing gas X) located in a [[field-free region]] preceding a [[Magnetic Sector|magnetic]] and [[Electric Sector|electric sector]] combination placed in either order, may be detected as follows;- if the instrument slits are wide and if the [[electric sector]] field is set to half the value required to transmit the main ion beam, the only ions [[Transmission|transmitted]] will be those with [[Kinetic Energy|kinetic energy]]/charge ratio half, or almost half, that of the main ion beam. The [[product ion]]s of the above [[charge stripping process]] fulfil that condition. If the magnetic field, B, is scanned, a [[mass spectrum]] of such doubly-charged product ions and thus of their singly-charged precursors is obtained. Such a spectrum is termed a E/2 mass spectrum.
 
== Related Terms ==
 
[[2e Mass Spectrum]]


[[Category:Reactions]]
[[Category:Reactions]]
 
[[Category:Sequential m/z Separation]]
[[Category:Sequential m/z Selection]]
{{DEFAULTSORT:E/2 mass spectrum}}
[[Category:Orange Book term]]

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Orange Book

ORANGE BOOK DEFINITION

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

E/2 mass spectrum

M2+ + X → M+ + X+

Processes of the charge-stripping type: M+ + X → M2+ + X + e occurring in collision cell (containing gas X) located in a field-free region preceding a magnetic and electric sector combination placed in either order, may be detected as follows;- if the instrument slits are wide and if the electric sector field is set to half the value required to transmit the main ion beam, the only ions transmitted will be those with kinetic energy/charge ratio half, or almost half, that of the main ion beam. The product ions of the above charge stripping process fulfil that condition. If the magnetic field, B, is scanned, a mass spectrum of such doubly-charged product ions and thus of their singly-charged precursors is obtained. Such a spectrum is termed a E/2 mass spectrum.

IUPAC 1997 Orange Book Chapter 12
Index of Orange Book Terms