Investigation of the ion signal decay in the reaction region of a pulsed ion mobility spectrometer

2015 ◽  
Vol 18 (1-2) ◽  
pp. 41-49 ◽  
Author(s):  
Frank Gunzer
Keyword(s):  
Ion Mobility ◽  
Ion Mobility Spectrometer ◽  
Signal Decay ◽  
Reaction Region

Measuring the effects of Coulomb repulsion via signal decay in an atmospheric pressure laser ionization ion mobility spectrometer

2018 ◽  
Vol 24 (4) ◽  
pp. 330-336 ◽  
Author(s):  
Marvin Ihlenborg ◽  
Ann-Kathrin Schuster ◽  
Jürgen Grotemeyer ◽  
Frank Gunzer
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Ion Mobility ◽  
Atmospheric Pressure ◽  
Coulomb Repulsion ◽  
Laser Ionization ◽  
Ion Mobility Spectrometer ◽  
Signal Decay ◽  
Ionization Sources ◽  
Reaction Region

Using lasers in ion mobility spectrometry offers a lot of advantages compared to standard ionization sources. Especially, the ion yield can be drastically increased. It can, however, reach levels where the Coulomb repulsion leads to unwanted side effects. Here, we investigate how the Coulomb repulsion can be detected apart from the typical signal broadening by measuring effects created already in the reaction region and comparing them with corresponding finite element method simulations.

scholarly journals ESTIMATION OF SPACE CHARGE INFLUENCE ON RESOLUTION OF ION-MOBILITY SPECTROMETER

2021 ◽  
Vol 31 (4) ◽  
pp. 41-54
Author(s):  
I. V. Kurnin ◽  
Keyword(s):  
Space Charge ◽  
Numerical Solution ◽  
Analytical Model ◽  
Ion Mobility ◽  
Ion Density ◽  
Ion Mobility Spectrometer ◽  
Reaction Region ◽  
Ion Cloud ◽  
Comparison Of The Results

The paper presents an analytical model describing the dynamics of ion cloud, taking into account the action of space charge during a motion in ion mobility spectrometer — starting from the reaction region, where the shutter forms an ion pulse, and the further drift of the formed ion pulse towards the collector. The presented model lets to estimate the degree of influence of the space charge on possible ion losses and the resolution of ion mobility spectrometer. The effect of the space charge becomes noticeable, starting with the ion density of 106 cm–3. Comparison of the results obtained using the analytical model with the results of numerical solution of the initial equations shows that they practically coincide.

Improving the analytical performance of ion mobility spectrometer using a non-radioactive electron source

2016 ◽  
Vol 19 (4) ◽  
pp. 175-182 ◽  
Author(s):  
Andre Heptner ◽  
Nico Angerstein ◽  
Tobias Reinecke ◽  
Erik Bunert ◽  
Ansgar T. Kirk ◽  
...  
Keyword(s):  
Ion Mobility ◽  
Electron Source ◽  
Analytical Performance ◽  
Ion Mobility Spectrometer

An ion mobility spectrometer sensor system for subsurface use

2009 ◽  
Vol 13 (1) ◽  
pp. 1-7 ◽  
Author(s):  
Daniella Morgos ◽  
Ivan Geroy ◽  
Richard G. Sevier ◽  
Molly M. Gribb ◽  
Kevin P. Ryan ◽  
...  
Keyword(s):  
Ion Mobility ◽  
Sensor System ◽  
Ion Mobility Spectrometer

Non-contact CFRP pre-bond quality NDT by Ion Mobility Spectrometer: Preliminary Results

2021 ◽  
Author(s):  
Maria Salvato ◽  
Ettore Massera ◽  
Saverio De Vito ◽  
Sara Kirchner ◽  
Cecilia Gestraud ◽  
...  
Keyword(s):  
Ion Mobility ◽  
Bond Quality ◽  
Ion Mobility Spectrometer ◽  
Preliminary Results
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