Design and performance evaluation of a miniaturized particle desorption mass spectrometer

Davis, Kaylee; Silveira, E.F. da; Schweikert, E. A.

doi:10.1016/0168-9002(88)90815-7

Cited by 6 publications

(1 citation statement)

References 11 publications

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“…In the last 2 decades, the time-of-flight spectrometers conquered new scientific and technologic space, due to the development of solid phase mass spectrometry, especially PDMS , (plasma desorption mass spectrometry) and MALDI , (matrix assisted laser desorption ionization). Modern instruments, using electrostatic mirrors, particle ion guides, and delayed extraction electric fields, achieve mass resolving power up to m /Δ m ∼ 20000 and a mass range from hydrogen up to molecules as massive as 10 6 u. Combined with a position sensitive ion detector (XY-TOF), this technique can also be employed for electric field mapping and for MS of large gas cells …”

Section: Introductionmentioning

confidence: 99%

Modeling Metastable Ion Time-of-Flight Peaks

Ponciano

Silveira

2002

J. Phys. Chem. A

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An analytical model is presented to describe time-of-flight (TOF) peak shapes of ionized metastable species emitted from solid surfaces under particle or photon bombardment. The model complements and consolidates the formalism for determination of metastable ion mean lives, release energies (Q-values), and fragmentation patterns by using linear-type TOF spectrometer data. Effects of fragmentation in the field free region of the TOF spectrometer are discussed. The analysis of phenylalanine TOF spectrum is performed to illustrate the determination of Q and mean life values.

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