A novel hybrid mass spectrometer

Suter, Manuel; Gfeller, Hans; Schlunegger, U. P.

doi:10.1002/rcm.1290030303

Cited by 22 publications

(7 citation statements)

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“…Even a quadrupole ion store (quistor) was used as a collision cell in a BE/quistor/quadrupole system. 29 The major difficulty with this latter apparatus was the necessity to Ñoat the ion trap at high potential. Other quadrupole tandem instruments have been constructed such as a quadrupole/ion trap instrument30 and a quadrupole/ion trap/quadrupole device ;31 the latter system permitted the study of ionÈmolecule reactions and the measurement of reaction rate constants.…”

Section: Introductionmentioning

confidence: 99%

Influence of trapping parameters on ion injection and dissociation efficiencies in a quadrupole mass filter/ion trap tandem instrument

Steiner¹,

Beaugrand²,

Liere³

et al. 1999

J. Mass Spectrom.

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Investigations on ion injection into a laboratory-built quadrupole/ion trap tandem instrument (Nermag R10-10/ITMS Finnigan) with a 90Ä geometry are described. The quadrupole dual electron impact/chemical ionization (EI/CI) source was used as an external source to prepare ions under EI (or CI) conditions. They were selected by the quadrupole analyzer and injected into the ion trap by using an electrostatic quadrupolar deÑector. The e †ects of major trapping parameters (i.e. ion injection r.f. level and helium pressure) were considered. The injection efficiency of the stable (m/z 69) fragment ion from FC43 and also those of the m/z 40 and 84 atomic cations of argon CF 3 ' and krypton depend upon the injection r.f. level conditions. As expected, e †ects of non-linear resonances were observed during these experiments. Under certain injection and trapping conditions, ion motion can be strongly a †ected, yielding ion ejection, because non-linear Ðelds (resulting from device imperfections) are present in addition to the quadrupolar potential required for ion trapping. The inÑuences of non-linear e †ects according to their strength were investigated to show the best and worst trapping conditions. The non-linear resonances are characterized by the expected values. In order to determine the average internal energy deposited on the selected polyatob z mic ions during injection, butylbenzene molecular ions were chosen as a model for internal energy measurement. The e †ects of the r.f. injection level and helium pressure on the injected ion fragmentation were studied. The M'ĩ ons were only observed through a narrow injection window. At low values, only low critical energy m/z 92 q z q z ions were detected, while the higher critical energy m/z 91 ions were observed at higher values. Copyright q z

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Section: Introductionmentioning

confidence: 99%

Influence of trapping parameters on ion injection and dissociation efficiencies in a quadrupole mass filter/ion trap tandem instrument

Steiner¹,

Beaugrand²,

Liere³

et al. 1999

J. Mass Spectrom.

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“…The dc pulse is applied to the exit end cap, destabilizing the trap and ejecting the trap contents for analysis. Pulsed dc ejection has been used for more than 20 years to interface ion traps to quadrupole and sector mass spectrometers (15)(16)(17). Some of these studies have focused on the fundamental aspects of dc ejection whereas others have used TOF analysis to study the energy distribution and mean kinetic energy of the ion cloud in the trap.…”

Section: Introductionmentioning

confidence: 99%

A Marriage Made in MS

Qian¹,

Lubman²

1995

Anal. Chem.

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Section: Introductionmentioning

confidence: 99%

“…Some of these studies have focused on the fundamental aspects of dc ejection whereas others have used TOF analysis to study the energy distribution and mean kinetic energy of the ion cloud in the trap. More recent hybrid instruments have ion traps interfaced to other ion traps and hybrid BEQ-type devices (17).…”

Section: Introductionmentioning

confidence: 99%