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RISS 인기검색어
- 검색키워드
- 저자 : ( Seyyed Mahmod Sadat Kiai ) (검색결과 3 건)
- 무료
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Optimum Radius Size between Cylindrical Ion Trap and Quadrupole Ion Trap
Chaharborj, Sarkhosh Seddighi,Kiai, Seyyed Mahmod Sadat,Arifin, Norihan Md,Gheisari, Yousof Korean Society for Mass Spectrometry 2015 Mass spectrometry letters Vol.6 No.3
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 m/Δm 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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Optimum Radius Size between Cylindrical Ion Trap and Quadrupole Ion Trap
Sarkhosh Seddighi Chaharborj,Seyyed Mahmod Sadat Kiai,Norihan Md Arifin,Yousof Gheisari 사단법인 한국질량분석학회 2015 Mass spectrometry letters Vol.6 No.3
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 dif- ficult 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 resolu- tions 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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Applications of Stochastic Process in the Quadrupole Ion traps
Sarkhosh Seddighi Chaharborj,Seyyed Mahmod Sadat Kiai,Norihan Md Arifina,Yousof Gheisari 사단법인 한국질량분석학회 2015 Mass spectrometry letters Vol.6 No.4
The Brownian motion or Wiener process, as the physical model of the stochastic procedure, is observed as an indexed collection random variables. Stochastic procedure are quite influential on the confinement potential fluctuation in the quadrupole ion trap (QIT). Such effect is investigated for a high fractional mass resolution spectrometry. A stochastic procedure like the Wiener or Brownian processes are potentially used in quadrupole ion traps (QIT). Issue examined are the sta-bility diagrams for noise coefficient, as well as ion trajectories in real time for noise coefficient, . The simulated results have been obtained with a high precision for the resolution of trapped ions. Furthermore, in the lower mass range, the impulse voltage including the stochastic potential can be considered quite suitable for the quadrupole ion trap with a higher mass resolution.
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