Details
| Original language | English |
|---|---|
| Title of host publication | 2017 30th International Vacuum Nanoelectronics Conference (IVNC) |
| Editors | Christoph Langer, Robert Lawrowski |
| Publisher | Institute of Electrical and Electronics Engineers Inc. |
| Pages | 102-103 |
| Number of pages | 2 |
| ISBN (electronic) | 9781509039753, 978-1-5090-3974-6 |
| ISBN (print) | 978-1-5090-3976-0 |
| Publication status | Published - 2017 |
| Event | 30th International Vacuum Nanoelectronics Conference - Regensburg, Germany Duration: 10 Jul 2017 → 14 Jul 2017 Conference number: 30 https://www.aconf.org/conf_92671.html |
Publication series
| Name | International Vacuum Nanoelectronics Conference |
|---|---|
| Publisher | IEEE |
| ISSN (electronic) | 2380-6311 |
Abstract
Ion mobility spectrometers (IMS) are measurement devices for fast and ultra-sensitive trace gas analysis. Most IMS employ radioactive electron sources, such as 3H or 63Ni, to provide free electrons with high kinetic energy at atmospheric pressure for initiating a chemical gas phase ionization of the analytes. The disadvantage of these radioactive materials are legal restrictions and the electron emission cannot be adjusted or turned off. Therefore, we developed a non-radioactive electron source and replaced the 3H-source of our existing IMS, leading to comparable spectra. An advantage of our non-radioactive electron source is that it can operate in a fast pulsed mode. By optimizing the geometric parameters and developing fast control electronics, we can achieve short electron emission pulses with high intensities and adjustable pulse width down to a few nanoseconds. This allows to control the ionization process, which can enhance the analytical performance of the IMS. Furthermore, a miniaturized non-radioactive electron source is desirable, e.g. for hand-held IMS devices. Therefore, we developed an emission current control for field emitter cathodes and investigated their suitability for this application.
Keywords
- APCI, emission current control, field emission, ion mobility spectrometry, non-radioacitve electron source, pulsed electron emission, thermionic emission
ASJC Scopus subject areas
- Materials Science(all)
- Electronic, Optical and Magnetic Materials
- Engineering(all)
- Electrical and Electronic Engineering
Cite this
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2017 30th International Vacuum Nanoelectronics Conference (IVNC). ed. / Christoph Langer; Robert Lawrowski. Institute of Electrical and Electronics Engineers Inc., 2017. p. 102-103 8051563 (International Vacuum Nanoelectronics Conference).
Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review
}
TY - GEN
T1 - Pulsed electron source for atmospheric pressure chemical ionization in ion mobility spectrometry
AU - Bunert, Erik
AU - Heptner, Andre
AU - Kirk, Ansgar T.
AU - Käbein, Oliver
AU - Zimmermann, Stefan
AU - Kusch, Alexander
AU - Wurz, Marc Christopher
N1 - Conference code: 30
PY - 2017
Y1 - 2017
N2 - Ion mobility spectrometers (IMS) are measurement devices for fast and ultra-sensitive trace gas analysis. Most IMS employ radioactive electron sources, such as 3H or 63Ni, to provide free electrons with high kinetic energy at atmospheric pressure for initiating a chemical gas phase ionization of the analytes. The disadvantage of these radioactive materials are legal restrictions and the electron emission cannot be adjusted or turned off. Therefore, we developed a non-radioactive electron source and replaced the 3H-source of our existing IMS, leading to comparable spectra. An advantage of our non-radioactive electron source is that it can operate in a fast pulsed mode. By optimizing the geometric parameters and developing fast control electronics, we can achieve short electron emission pulses with high intensities and adjustable pulse width down to a few nanoseconds. This allows to control the ionization process, which can enhance the analytical performance of the IMS. Furthermore, a miniaturized non-radioactive electron source is desirable, e.g. for hand-held IMS devices. Therefore, we developed an emission current control for field emitter cathodes and investigated their suitability for this application.
AB - Ion mobility spectrometers (IMS) are measurement devices for fast and ultra-sensitive trace gas analysis. Most IMS employ radioactive electron sources, such as 3H or 63Ni, to provide free electrons with high kinetic energy at atmospheric pressure for initiating a chemical gas phase ionization of the analytes. The disadvantage of these radioactive materials are legal restrictions and the electron emission cannot be adjusted or turned off. Therefore, we developed a non-radioactive electron source and replaced the 3H-source of our existing IMS, leading to comparable spectra. An advantage of our non-radioactive electron source is that it can operate in a fast pulsed mode. By optimizing the geometric parameters and developing fast control electronics, we can achieve short electron emission pulses with high intensities and adjustable pulse width down to a few nanoseconds. This allows to control the ionization process, which can enhance the analytical performance of the IMS. Furthermore, a miniaturized non-radioactive electron source is desirable, e.g. for hand-held IMS devices. Therefore, we developed an emission current control for field emitter cathodes and investigated their suitability for this application.
KW - APCI
KW - emission current control
KW - field emission
KW - ion mobility spectrometry
KW - non-radioacitve electron source
KW - pulsed electron emission
KW - thermionic emission
UR - http://www.scopus.com/inward/record.url?scp=85032834764&partnerID=8YFLogxK
U2 - 10.15488/4417
DO - 10.15488/4417
M3 - Conference contribution
AN - SCOPUS:85032834764
SN - 978-1-5090-3976-0
T3 - International Vacuum Nanoelectronics Conference
SP - 102
EP - 103
BT - 2017 30th International Vacuum Nanoelectronics Conference (IVNC)
A2 - Langer, Christoph
A2 - Lawrowski, Robert
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 30th International Vacuum Nanoelectronics Conference
Y2 - 10 July 2017 through 14 July 2017
ER -