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Titolo:
Ion-optical properties of time-of-flight mass spectrometers
Autore:
Ioanoviciu, D;
Indirizzi:
Natl Inst Res & Dev Isotop & Mol Technol, RO-3400 Cluj Napoca, Romania Natl Inst Res & Dev Isotop & Mol Technol Cluj Napoca Romania RO-3400 nia
Titolo Testata:
INTERNATIONAL JOURNAL OF MASS SPECTROMETRY
fascicolo: 3, volume: 206, anno: 2001,
pagine: 211 - 229
SICI:
1387-3806(20010322)206:3<211:IPOTMS>2.0.ZU;2-A
Fonte:
ISI
Lingua:
ENG
Soggetto:
ASSISTED-LASER-DESORPTION/IONIZATION; TOROID ELECTROSTATIC ANALYZERS; CORRELATED DELAYED EXTRACTION; DESORPTION IONIZATION; ELECTROSPRAY-IONIZATION; ANALYTIC-EXPRESSION; ELEMENTAL ANALYSIS; QUADRUPOLE LENS; MATRIX; REFLECTRON;
Keywords:
TOF mass spectrometers; ion optics; time focusing; velocity focusing; energy focusing;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
87
Recensione:
Indirizzi per estratti:
Indirizzo: Ioanoviciu, D Natl Inst Res & Dev Isotop & Mol Technol, POB 700, RO-3400 Cluj Napoca, Romania Natl Inst Res & Dev Isotop & Mol Technol POB 700 Cluj Napoca Romania RO-3400
Citazione:
D. Ioanoviciu, "Ion-optical properties of time-of-flight mass spectrometers", INT J MASS, 206(3), 2001, pp. 211-229

Abstract

The time focusing properties of time-of-flight mass spectrometers in current use, under development, or with probable future applications are presented. For most of the presented analyzer types a mass resolution formula was given to calculate instrumental performance. These formulas account for second or third order contributions to the ion packet length, depending upon the analyzer's focusing degree. This analysis covers homogeneous electric field mirrors, cylindrical reflectrons, quadratic potential mirrors with and without field free spaces included, linear drift space focusing analyzers, as well as quadrupole trap time-of-flight hybrid systems. The velocity focusing procedures by delayed extraction and postsource focusing, very useful in matrix-assisted laser desorption/ionization time-of-flight mass spectrometry, are also detailed. (Int J Mass Spectrom 206 (2001) 211-229) (C) 2001 Elsevier Science B.V.

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Documento generato il 05/04/20 alle ore 21:53:49