50-Channel Charge Integrating Faraday Detector for Characterization of Ambient Ions



Maher, S
(2017) 50-Channel Charge Integrating Faraday Detector for Characterization of Ambient Ions. Proceedings of IEEE Sensors, 2017-D. pp. 1365-1367.

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Abstract

Herein we present a novel 50 channel, charge integrating, Faraday plate detector system for the detection, characterization and imaging of charged particles emitted from an ambient ionization source. The detector is capable of spatial positioning of ion beams with sub nA current intensity, high linearity, large dynamic range and dark current noise <10 pA. Each channel is connected to its own calibrated amplifier for true simultaneous integration. To demonstrate the detector capability, 2-dimensional ion images are presented for ions emitted from a desorption atmospheric pressure chemical ionisation source with peak ion current of ∼30pA. The novel detection system facilitates the characterization and optimization of ambient ionisation sources in terms of electrical and geometric conditions for improved ion generation and coupling with a mass spectrometer.

Item Type: Article
Uncontrolled Keywords: DAPCI, Ambient Ionization, Ion imaging, Pixelated Faraday Detector, Mass Spectrometry, Ion Mobility
Depositing User: Symplectic Admin
Date Deposited: 04 Feb 2020 11:43
Last Modified: 19 Jan 2023 00:09
DOI: 10.1109/ICSENS.2017.8234331
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3070708

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