Impulsional mode operation for a Paul ion trap

Kiai, S. M. Sadat; Baradaran, M; Adlparvar, S.; Khalaj, M. M.; Doroudi, Alireza; Nouri, S.; Shojai, A; Abdollahzadeh, M.; Roshan, M.V.; Babazadeh, A. R.

doi:10.1016/j.ijms.2005.09.004

Cited by 11 publications

(7 citation statements)

References 8 publications

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“…Hence, it is important to know that β z point are the equivalent points; two operating points located in their corresponding stability diagram have the same β z . 31 For the same 0< β z <1 we have, 0<…”

Section: Phase Space Ion Trajectorymentioning

confidence: 93%

“…26,30 To compute the accurate elements of the motion ----------------- ------------------- ------------------sh c 2 λ i ( ) -------------------⋅ ------------------ch c 2 λ i ( ) ------------------sh c 2 λ i ( ) = equations for the stability diagrams, we have used the fifth order Runge-Kutta numerical method with a 0.001 steps increment for Matlab software and scanning method. Figure 1 (a) and (b) shows the calculated first and second stability regions for the quadrupole ion trap and cylindrical ion trap, 31 black line (solid line): QIT and blue line (dash line): CIT with optimum radius size z 1 = 1.04978z 0 , (a): first stability region and (b): second stability region. Figure 1 shows that the apex of the stability parameters a z stayed the same and the apex of the stability parameters q z decrease for CIT to compare with QIT.…”

Section: Stability Regionsmentioning

confidence: 99%

See 1 more Smart Citation

Optimum Radius Size between Cylindrical Ion Trap and Quadrupole Ion Trap

Chaharborj¹,

Kiai²,

Arifin³

et al. 2015

Mass Spectrometry Letters

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Quadrupole ion trap mass analyzer with a simplified geometry, namely, the cylindrical ion trap (CIT), has been shown to be well-suited using in miniature mass spectrometry and even in mass spectrometer arrays. Computation of stability regions is of particular importance in designing and assembling an ion trap. However, solving CIT equations are rather more difficult and complex than QIT equations, so, analytical and matrix methods have been widely used to calculate the stability regions. In this article we present the results of numerical simulations of the physical properties and the fractional mass resolutions of the confined ions in the first stability region was analyzed by the fifth order Runge-Kutta method (RKM5) at the optimum radius size for both ion traps. Because of similarity the both results, having determining the optimum radius, we can make much easier to design CIT. Also, the simulated results has been performed a high precision in the resolution of trapped ions at the optimum radius size.

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Section: Phase Space Ion Trajectorymentioning

confidence: 93%

Section: Stability Regionsmentioning

confidence: 99%

Optimum Radius Size between Cylindrical Ion Trap and Quadrupole Ion Trap

Chaharborj¹,

Kiai²,

Arifin³

et al. 2015

Mass Spectrometry Letters

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show abstract

“…The resolution of a quadrupole ion trap 29 and cylindrical ion trap mass spectrometry in general, is a function of the mechanical accuracy of the hyperboloid of the QIT Dr 0 , and the cylindrical of the CIT Dr 1 , and the stability performances of the electronics device such as, variations in voltage amplitude DV, the rf frequency DU 20 and Dk (0 # k < 1), which tell us how accurate the form of the voltage signal is. The factor Dk plays an important role in building the stability diagrams for the purpose of the mass resolution.…”

Section: Fractional Resolutionmentioning

confidence: 99%

Effect of damping force on CIT and QIT ion traps supplied with a periodic impulse voltage form

Kiai

Chaharborj

Bakar

et al. 2011

J. Anal. At. Spectrom.

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“…Quadrupole mass spectrometry has developed through several stages to its current stage of relatively high performance and increasing popularity. 1,2 The quadrupole mass filter principle, which was invented by Paul and Steinwedel 3 has been widely applied to mass spectrometry, [1][2][3][4][5][6][7][8][9][10] ion cooling and spectroscopy, [11][12][13] frequency standards 14,15 and, quantum computing. 16,17 To apply various objectives, various geometries of the mass spectrometer have been suggested.…”

Section: Introductionmentioning

confidence: 99%

Study of Quadrupole Mass Filter Supplied with a New Impulsional Potential

Chaharborj

Kiai

Ismail

et al. 2012

Eur J Mass Spectrom (Chichester)

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The paper reports on some theoretical studies concerning the impulsional mode of a quadrupole mass filter (QMF) supplied with a new periodic impulsional radio frequency voltagein the form of V(ac)cos(Ωt)⌊1=kcos(1/3Ωt/1-√kcos(2Ωt⌋ with 0 ≤k < 1 (⌊.⌋ means floor function) and eventually compares it to the classical sinusoidal case, k = 0. The physical properties of the confined ions in the r and z directions are illustrated and the fractional mass resolutions m/Δm of the confined ions in the first stability regions of both potential were analyzed for hydrogen isotopes and presented.

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Impulsional mode operation for a Paul ion trap

Cited by 11 publications

References 8 publications

Optimum Radius Size between Cylindrical Ion Trap and Quadrupole Ion Trap

Optimum Radius Size between Cylindrical Ion Trap and Quadrupole Ion Trap

Effect of damping force on CIT and QIT ion traps supplied with a periodic impulse voltage form

Study of Quadrupole Mass Filter Supplied with a New Impulsional Potential

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