Details
| Original language | English |
|---|---|
| Article number | 053101 |
| Journal | Review of scientific instruments |
| Volume | 96 |
| Issue number | 5 |
| Publication status | Published - May 2025 |
Abstract
A compact non-radioactive ionization source is required for various detectors. A photoionization source utilizing a pure pyrolytic carbon membrane grown via chemical vapor deposition is developed and characterized. The efficient transmission of the carbon fluorescence line results in a high source efficiency at an acceleration voltage of 500 V. Comparative studies demonstrate that this source generates significantly higher ion currents at voltages below 2 kV compared to traditional configurations, including a carbon membrane coated with a 50 nm gold target and a 125 μm beryllium membrane coated with a 750 nm silver target. As a preliminary proof of principle, the photoionization source is evaluated using a field-switching ion mobility spectrometer. At an acceleration voltage of 500 V and an emission current of 5 μA, the pure carbon membrane configuration exhibits a twofold increase in the intensity of the ion peak compared to a tritium ionization source.
ASJC Scopus subject areas
- Physics and Astronomy(all)
- Instrumentation
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In: Review of scientific instruments, Vol. 96, No. 5, 053101, 05.2025.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Pyrolytic carbon membranes enabling novel low-energy photon sources
AU - Bachmann, Michael
AU - Düsberg, Felix
AU - Edler, Simon
AU - Miyakawa, Natsuki
AU - Schels, Andreas
AU - Pahlke, Andreas
AU - Herdl, Florian
AU - Duesberg, Georg S.
AU - Kueddelsmann, Maximilian
AU - Bunert, Erik
AU - Kaschytza, Max
AU - Zimmermann, Stefan
N1 - Publisher Copyright: © 2025 Author(s).
PY - 2025/5
Y1 - 2025/5
N2 - A compact non-radioactive ionization source is required for various detectors. A photoionization source utilizing a pure pyrolytic carbon membrane grown via chemical vapor deposition is developed and characterized. The efficient transmission of the carbon fluorescence line results in a high source efficiency at an acceleration voltage of 500 V. Comparative studies demonstrate that this source generates significantly higher ion currents at voltages below 2 kV compared to traditional configurations, including a carbon membrane coated with a 50 nm gold target and a 125 μm beryllium membrane coated with a 750 nm silver target. As a preliminary proof of principle, the photoionization source is evaluated using a field-switching ion mobility spectrometer. At an acceleration voltage of 500 V and an emission current of 5 μA, the pure carbon membrane configuration exhibits a twofold increase in the intensity of the ion peak compared to a tritium ionization source.
AB - A compact non-radioactive ionization source is required for various detectors. A photoionization source utilizing a pure pyrolytic carbon membrane grown via chemical vapor deposition is developed and characterized. The efficient transmission of the carbon fluorescence line results in a high source efficiency at an acceleration voltage of 500 V. Comparative studies demonstrate that this source generates significantly higher ion currents at voltages below 2 kV compared to traditional configurations, including a carbon membrane coated with a 50 nm gold target and a 125 μm beryllium membrane coated with a 750 nm silver target. As a preliminary proof of principle, the photoionization source is evaluated using a field-switching ion mobility spectrometer. At an acceleration voltage of 500 V and an emission current of 5 μA, the pure carbon membrane configuration exhibits a twofold increase in the intensity of the ion peak compared to a tritium ionization source.
UR - http://www.scopus.com/inward/record.url?scp=105003991937&partnerID=8YFLogxK
U2 - 10.1063/5.0240264
DO - 10.1063/5.0240264
M3 - Article
AN - SCOPUS:105003991937
VL - 96
JO - Review of scientific instruments
JF - Review of scientific instruments
SN - 0034-6748
IS - 5
M1 - 053101
ER -