TY - JOUR

T1 - IMS Instrumentation I

T2 - Isolated data acquisition for ion mobility spectrometers with grounded ion sources

AU - Lippmann, Martin

AU - Kirk, Ansgar T.

AU - Hitzemann, Moritz

AU - Zimmermann, Stefan

N1 - Funding information: Open Access funding provided by Projekt DEAL. Funded by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) - 396430937.

PY - 2020/10

Y1 - 2020/10

N2 - The drift voltage required for operating ion mobility spectrometers implies high voltage isolation of either the ion source or the detector. Typically, the detector is grounded due to the sensitivity of the small ion currents to interferences and thus higher requirements for signal integrity than the ion source. However, for certain ion sources, such as non-radioactive electron emitters or electrospray ionization sources, or for coupling with other instruments, such as gas or liquid chromatographs, a grounded ion source is beneficial. In this paper, we present an isolated data acquisition interface using a 16 bit, 250 kilosamples per second analog to digital converter and fiber optic transmitters and receivers. All spectra recorded via this new data acquisition interface and with a grounded ion source show the same peak shapes and noise when compared with a grounded detector, allowing additional freedom in design.

AB - The drift voltage required for operating ion mobility spectrometers implies high voltage isolation of either the ion source or the detector. Typically, the detector is grounded due to the sensitivity of the small ion currents to interferences and thus higher requirements for signal integrity than the ion source. However, for certain ion sources, such as non-radioactive electron emitters or electrospray ionization sources, or for coupling with other instruments, such as gas or liquid chromatographs, a grounded ion source is beneficial. In this paper, we present an isolated data acquisition interface using a 16 bit, 250 kilosamples per second analog to digital converter and fiber optic transmitters and receivers. All spectra recorded via this new data acquisition interface and with a grounded ion source show the same peak shapes and noise when compared with a grounded detector, allowing additional freedom in design.

KW - Amplifier

KW - Data acquisition

KW - Floating

KW - Grounded ion source

KW - Ion mobility spectrometer

KW - Isolated

UR - http://www.scopus.com/inward/record.url?scp=85084306805&partnerID=8YFLogxK

U2 - 10.1007/s12127-020-00260-5

DO - 10.1007/s12127-020-00260-5

M3 - Article

AN - SCOPUS:85084306805

VL - 23

SP - 69

EP - 74

JO - International Journal for Ion Mobility Spectrometry

JF - International Journal for Ion Mobility Spectrometry

SN - 1435-6163

IS - 2

ER -