Details
| Original language | English |
|---|---|
| Pages (from-to) | 21-29 |
| Number of pages | 9 |
| Journal | International Journal for Ion Mobility Spectrometry |
| Volume | 22 |
| Issue number | 1 |
| Publication status | Published - 15 Dec 2018 |
Abstract
In order to optimize an ion mobility spectrometer (IMS) with respect to resolving power and sensitivity, the exact spatial ion density distribution generated by the used ionization source is of major interest. In this work, we investigate the two-dimensional (2D) spatial ion density distribution generated by a 63 Ni source and the three-dimensional (3D) spatial ion density distributions generated by a radioactive 3 H electron source, our non-radioactive electron source and an X-ray source. Therefore, we used an experimental setup consisting of the ionization source under investigation, an ionization region, a 5 mm short drift tube and a PCB Faraday detector segmented into stripe electrodes to measure the ion current. Repeating this measurement for different detector angles, the resulting 3D spatial ion density distribution can be calculated by image reconstruction. Furthermore, we varied the kinetic electron energy of our non-radioactive electron source in order to validate the simulated ion density distribution shown in previous work.
Keywords
- APCI, Ion distribution, Ion generation, Ion profiles, Non-radioactive electron source, Spatial ion density distribution, Tritium source, X-ray-source
ASJC Scopus subject areas
- Chemistry(all)
- Spectroscopy
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In: International Journal for Ion Mobility Spectrometry, Vol. 22, No. 1, 15.12.2018, p. 21-29.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Comparison of spatial ion distributions from different ionization sources
AU - Bunert, Erik
AU - Kirk, Ansgar T.
AU - Käbein, Oliver
AU - Zimmermann, Stefan
PY - 2018/12/15
Y1 - 2018/12/15
N2 - In order to optimize an ion mobility spectrometer (IMS) with respect to resolving power and sensitivity, the exact spatial ion density distribution generated by the used ionization source is of major interest. In this work, we investigate the two-dimensional (2D) spatial ion density distribution generated by a 63 Ni source and the three-dimensional (3D) spatial ion density distributions generated by a radioactive 3 H electron source, our non-radioactive electron source and an X-ray source. Therefore, we used an experimental setup consisting of the ionization source under investigation, an ionization region, a 5 mm short drift tube and a PCB Faraday detector segmented into stripe electrodes to measure the ion current. Repeating this measurement for different detector angles, the resulting 3D spatial ion density distribution can be calculated by image reconstruction. Furthermore, we varied the kinetic electron energy of our non-radioactive electron source in order to validate the simulated ion density distribution shown in previous work.
AB - In order to optimize an ion mobility spectrometer (IMS) with respect to resolving power and sensitivity, the exact spatial ion density distribution generated by the used ionization source is of major interest. In this work, we investigate the two-dimensional (2D) spatial ion density distribution generated by a 63 Ni source and the three-dimensional (3D) spatial ion density distributions generated by a radioactive 3 H electron source, our non-radioactive electron source and an X-ray source. Therefore, we used an experimental setup consisting of the ionization source under investigation, an ionization region, a 5 mm short drift tube and a PCB Faraday detector segmented into stripe electrodes to measure the ion current. Repeating this measurement for different detector angles, the resulting 3D spatial ion density distribution can be calculated by image reconstruction. Furthermore, we varied the kinetic electron energy of our non-radioactive electron source in order to validate the simulated ion density distribution shown in previous work.
KW - APCI
KW - Ion distribution
KW - Ion generation
KW - Ion profiles
KW - Non-radioactive electron source
KW - Spatial ion density distribution
KW - Tritium source
KW - X-ray-source
UR - http://www.scopus.com/inward/record.url?scp=85058496366&partnerID=8YFLogxK
U2 - 10.1007/s12127-018-0241-3
DO - 10.1007/s12127-018-0241-3
M3 - Article
AN - SCOPUS:85058496366
VL - 22
SP - 21
EP - 29
JO - International Journal for Ion Mobility Spectrometry
JF - International Journal for Ion Mobility Spectrometry
SN - 1435-6163
IS - 1
ER -