Confinement d'ions dans une cage cylindrique à champ quadrupolaire HF. Application à la spectrométrie de masse - I. Partie théorique

Nassiopoulos, A. G.; Møller, Poul; Septier, A.

doi:10.1051/rphysap:0198000150100152900

Cited by 4 publications

(4 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…18 lations were performed with the default version of SIMIoN (which does not include any diffusion term) for bradykinin 2+ ions and at a rf frequency of 5 MHz. the stability diagram for cIt is similar to the one observed for QIt as shown in figure 4(c), 30,31 although the stable region is larger for a QIt. 18 the present stability diagram for cIt obtained with SIMIoN simulations is identical to the one obtained from the resolution of the Mathieu equations.…”

Section: Cylindrical Ion Trapsupporting

confidence: 75%

See 1 more Smart Citation

Ion Trajectory Simulations in a High-Pressure Cylindrical Ion Trap

Albrieux

Antoine

Chirot

et al. 2010

Eur J Mass Spectrom (Chichester)

View full text Add to dashboard Cite

All rights reserved EuroPEAN JourNAL of MASS SPEctroMEtry there is a growing interest in the miniaturization of mass spectrometric devices for in situ analysis applications that include, in particular, environmental analysis. 1,2 conventional vacuum systems are often inappropriate because of size and mechanical considerations. thus, operation of mass analyzers at substantially higher pressure than customary pressures would be desirable. the ability to effectively focus and transmit ions at high pressure is a key factor that affects sensitivity and dynamic range in mass spectrometry. to improve the mass spectrometric sensitivity achievable for instance with electrospray ionization sources, ion funnel interfaces have been developed and successfully implemented in various mass spectrometric designs.3-10 An ion funnel is a stack of closely-spaced ring electrodes with decreasing internal diameters. A combination of rf and Dc potentials permits the focusing of ions at pressures that can reach ~10 torr. 6 However, the stacking of several tens of electrodes prevents easy miniaturization of such devices. the cylindrical geometry is physically simple to construct in a range of sizes, which render cylindrical ion traps attractive for miniaturization.11-13 the cylindrical ion trap can readily be fabricated in an appropriately small size; it provides tandem mass spectroscopy (MS/MS) capabilities and gives good sensitivity. the geometry of the cylindrical ion trap is amenable to multi-level microfabrication techniques 14-17 and the trap size and electrical requirements make it suitable for layout as a large array. 16 furthermore, rf ion trap mass analyzers can also be operated at relatively higher pressure than other mass analyzers, thus easing the requirements for the vacuum system. However, the trapping capablities of cylindrical ion traps are generally strongly altered at high-pressure regimes (greater than 2 torr) and stability diagrams at these regimes are still to be explored in detail. the operation of ion trap mass spectrometers in vacuum has been reviewed by March.18 the addition of a phenomenological term in the ion equation of motion has also allowed for a first exploration of the effects of a buffer gas pressure on ion trap stability. 19In the present work, we use an approach similar to the one proposed by Jarrold and co-workers for ion funnels.

show abstract

Section: Cylindrical Ion Trapsupporting

confidence: 75%

“…According to previous studies, 30,31 and for the sake of simplicity, we started with a cIt geometry for which r = z. figure 3 shows a cut of the cylindrical ion trap implemented in our study.…”

Section: Cylindrical Ion Trapmentioning

confidence: 99%

Ion Trajectory Simulations in a High-Pressure Cylindrical Ion Trap

Albrieux

Antoine

Chirot

et al. 2010

Eur J Mass Spectrom (Chichester)

View full text Add to dashboard Cite

show abstract

“…-The confinement of charged particles in three dimensions has found applications in a widening range of fields of physics. Most notably ion storage techniques were used for the precision spectroscopy of ions [1] and charged particles [2], in studies of ion-molecule reactions [3], in mass spectrometry [4], and in ultra high vacuum technology [5]. Miniature ion traps are also of importance in nuclear spectroscopy, where it is advantageous to confine minute samples of radioactive isotopes in a small volume.…”

mentioning

confidence: 99%

“…When using the scaled energy ratio PR no variation of the domain of confinement is present. 4. Ion storage in the présence of a superimposed external magnetic field.…”

mentioning

confidence: 99%

Storage and injection of charged particles in an electrostatic trap

Chun‐Sing

Schuessler

1981

Rev. Phys. Appl. (Paris)

View full text Add to dashboard Cite

2014 Le confinement des ions à l'intérieur d'une cage purement électrostatique est étudié. La cage est composée de deux cylindres concentriques maintenus à une différence de potentiel et de deux couvercles plans isolés. Si la longueur de la cage est longue comparée à la dimension radiale, le potentiel créé dans la région intérieure est logarithmique. Le domaine de confinement est déterminé en comparant les déplacements radiaux d'un ion à l'apogée et au périgée aux rayons des cylindres. L'effet d'un champ magnétique uniforme superposé le long de la cage est considéré et le stockage des ions injectés de l'extérieur est étudié numériquement. La cage électrostatique des ions est plus intéressante lorsqu'il faut piéger des particules chargées indépendamment du rapport charge/ masse.

show abstract

Quadrupole ion traps

March

2009

Mass Spectrometry Reviews

130

104

View full text Add to dashboard Cite

The extraordinary story of the three-dimensional radiofrequency quadrupole ion trap, accompanied by a seemingly unintelligible theoretical treatment, is told in some detail because of the quite considerable degree of commercial success that quadrupole technology has achieved. The quadrupole ion trap, often used in conjunction with a quadrupole mass filter, remained a laboratory curiosity until 1979 when, at the American Society for Mass Spectrometry Conference in Seattle, George Stafford, Jr., of Finnigan Corp., learned of the Masters' study of Allison Armitage of a combined quadrupole ion trap/quadrupole mass filter instrument for the observation of electron impact and chemical ionization mass spectra of simple compounds eluting from a gas chromatograph. Stafford developed subsequently the mass-selective axial instability method for obtaining mass spectra from the quadrupole ion trap alone and, in 1983, Finnigan Corp. announced the first commercial quadrupole ion trap instrument as a detector for a gas chromatograph. In 1987, confinement of ions generated externally to the ion trap was demonstrated and, soon after, the new technique of electrospray ionization was shown to be compatible with the ion trap.

show abstract

Confinement d'ions dans une cage cylindrique à champ quadrupolaire HF. Application à la spectrométrie de masse - I. Partie théorique

Cited by 4 publications

References 12 publications

Ion Trajectory Simulations in a High-Pressure Cylindrical Ion Trap

Ion Trajectory Simulations in a High-Pressure Cylindrical Ion Trap

Storage and injection of charged particles in an electrostatic trap

Quadrupole ion traps

Contact Info

Product

Resources

About