Modelling of penetration of ions through a shutter grid in ion mobility spectrometers

Puton, Jarosław; Knap, A.; Siodlowski, Boguslaw

doi:10.1016/j.snb.2008.08.011

Cited by 43 publications

(35 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A detailed description of the Bradbury-Nielsen ion shutter principle is given in ref. 30 Thus, we inject the ions with a transient electrical field. At all other times the electric potential of the ionization source equals the potential of the injection grid ( Fig.…”

Section: Methodsmentioning

confidence: 99%

Investigation of ion–ion-recombination at atmospheric pressure with a pulsed electron gun

Heptner¹,

Cochems²,

Langejürgen³

et al. 2012

Analyst

View full text Add to dashboard Cite

For future development of simple miniaturized sensors based on pulsed atmospheric pressure ionization as known from ion mobility spectrometry, we investigated the reaction kinetics of ion-ionrecombination to establish selective ion suppression as an easy to apply separation technique for otherwise non-selective ion detectors. Therefore, the recombination rates of different positive ion species, such as protonated water clusters H + (H 2 O) n (positive reactant ions), acetone, ammonia and dimethyl-methylphosphonate ions, all recombining with negative oxygen clusters O 2 À (H 2 O) n (negative reactant ions) in a field-free reaction region, are measured and compared. For all experiments, we use a drift tube ion mobility spectrometer equipped with a non-radioactive electron gun for pulsed atmospheric pressure ionization of the analytes. Both, ionization and recombination times are controlled by the duty cycle and repetition rate of the electron emission from the electron gun. Thus, it is possible to investigate the ion loss caused by ion-ion-recombination depending on the recombination time defined as the time delay between the end of the electron emission and the ion injection into the drift tube. Furthermore, the effect of the initial total ion density in the reaction region on the ion-ionrecombination rate is investigated by varying the density of the emitted electrons.

show abstract

Section: Methodsmentioning

confidence: 99%

Investigation of ion–ion-recombination at atmospheric pressure with a pulsed electron gun

Heptner¹,

Cochems²,

Langejürgen³

et al. 2012

Analyst

View full text Add to dashboard Cite

show abstract

“…s(x, y) for x 0 < x ≤ x ag s cor (x, y) = s(x, y) for x > x ag (11) where x ag is a position of the aperture grid, x 0 the smallest value of the x coordinate, for which induction of the charge in the collector electrode should be taken into account. A beginning of the x-axis is located in the middle of the shutter grid.…”

Section: The Shape Of Current Pulse-theoretical Considerationsmentioning

confidence: 99%

“…If distance between the grid electrodes is comparable with space covered by ions in time equal to gating pulse duration, initial distribution of ion concentration significantly differs from one-dimensional rectangular distribution. Using simple computer simulations it may be shown that ions are introduced to the drift section between grid electrodes in form of numerous swarms separated from each other [11]. Therefore, phenomena taking place in the neighbourhood of the shutter grid constitute an instrumental factor influencing the peak shape at the first phase of the drift.…”

Section: Introductionmentioning

confidence: 99%

Generation of current pulses in collector electrode of IMS detectors

Puton

Siodlowski

2010

International Journal of Mass Spectrometry

Self Cite

View full text Add to dashboard Cite

“…Several researchers have investigated how the change of the electrical field around the ion shutter will influence the performance of the IMS [11][12][13][14][15][16][17]. Eiceman et al systematically studied the effect of the influence and the importance of optimizing electric fields in each region of an IMS drift tube by experimental and simulation methods.…”

Section: Introductionmentioning

confidence: 99%

“…In addition, the modeling of the penetration of ions through an ion shutter has been done with the aid of computer calculation. The electric field in the neighborhood of the ion shutter has a distinctive effect on the shape of the ion peak and ion intensity as well as the resolution of IMS spectrometer [17].…”

Section: Introductionmentioning

confidence: 99%

A novel driving mode for ion shutter based on alternating current superposition and its application to ion mobility spectrometry

Liu

Huang

Shen

et al. 2015

Sensors and Actuators B: Chemical

View full text Add to dashboard Cite

Modelling of penetration of ions through a shutter grid in ion mobility spectrometers

Cited by 43 publications

References 6 publications

Investigation of ion–ion-recombination at atmospheric pressure with a pulsed electron gun

Investigation of ion–ion-recombination at atmospheric pressure with a pulsed electron gun

Generation of current pulses in collector electrode of IMS detectors

A novel driving mode for ion shutter based on alternating current superposition and its application to ion mobility spectrometry

Contact Info

Product

Resources

About