Double-focusing mass spectrograph

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Double-focusing mass spectrograph
Related Term(s): Double-focusing mass spectrometer
This is an unofficial draft definition presented for information and comment. For current IUPAC recommended mass spectrometry terms, see the Definitions of Terms Relating to Mass Spectrometry (IUPAC Recommendations 2013); DOI: 10.1351/PAC-REC-06-04-06 © IUPAC 2013.

Orange Book


IUPAC. Analytical Division. Compendium of Analytical Nomenclature (the “Orange Book”). Definitive Rules, 1979.

Double-focusing mass spectrograph

An instrument that uses both direction and velocity focusing so that an ion beam initially diverging and containing ions of different energies is separated into beams according to the mass/charge ratio which are thus focused on to a photographic plate or film.

IUPAC Orange Book Chapter 12
Index of Orange Book Terms