Details
| Original language | English |
|---|---|
| Pages (from-to) | 72-76 |
| Number of pages | 5 |
| Journal | Technisches Messen |
| Volume | 89 |
| Issue number | s1 |
| Publication status | Published - 1 Sept 2022 |
Abstract
In this paper, we present an electron capture detector based on low energetic X-ray ionization (X-ECD) with similar performance to radioactive electron capture detectors. The X-ECD has limits of detection in the low pptv-range and linearity over three orders of magnitude for electron-affine substances. The output signal of electron capture detectors is defined by the quantity of free electrons in a reaction region. Electron-affine substances that enter this reaction region capture the free electrons and thus reduce the amount of free electrons, which depends on substance concentration. Typically, high energetic electrons from a radioactive 63Ni source with up to 400 MBq ionizes nitrogen in the reaction region to generate a large number of free (secondary) electrons. Instead of a radioactive source, we use low energetic X-rays to ionize the nitrogen and generate free electrons. Compared to radioactive sources low energetic X-ray sources (below 30 kV and below 0.1 μSv/h 0.1m above touchable surfaces) are not or less restricted by legal regulations [5].
Keywords
- GC detector, non-radioactive electron capture detector, Xray ECD
ASJC Scopus subject areas
- Physics and Astronomy(all)
- Instrumentation
- Engineering(all)
- Electrical and Electronic Engineering
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In: Technisches Messen, Vol. 89, No. s1, 01.09.2022, p. 72-76.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Electron capture detector based on X-ray ionization
AU - Kueddelsmann, Maximilian J.
AU - Bunert, Erik
AU - Zimmermann, Stefan
N1 - Acknowledgments: We thank the AMA Instruments GmbH for supporting the development.
PY - 2022/9/1
Y1 - 2022/9/1
N2 - In this paper, we present an electron capture detector based on low energetic X-ray ionization (X-ECD) with similar performance to radioactive electron capture detectors. The X-ECD has limits of detection in the low pptv-range and linearity over three orders of magnitude for electron-affine substances. The output signal of electron capture detectors is defined by the quantity of free electrons in a reaction region. Electron-affine substances that enter this reaction region capture the free electrons and thus reduce the amount of free electrons, which depends on substance concentration. Typically, high energetic electrons from a radioactive 63Ni source with up to 400 MBq ionizes nitrogen in the reaction region to generate a large number of free (secondary) electrons. Instead of a radioactive source, we use low energetic X-rays to ionize the nitrogen and generate free electrons. Compared to radioactive sources low energetic X-ray sources (below 30 kV and below 0.1 μSv/h 0.1m above touchable surfaces) are not or less restricted by legal regulations [5].
AB - In this paper, we present an electron capture detector based on low energetic X-ray ionization (X-ECD) with similar performance to radioactive electron capture detectors. The X-ECD has limits of detection in the low pptv-range and linearity over three orders of magnitude for electron-affine substances. The output signal of electron capture detectors is defined by the quantity of free electrons in a reaction region. Electron-affine substances that enter this reaction region capture the free electrons and thus reduce the amount of free electrons, which depends on substance concentration. Typically, high energetic electrons from a radioactive 63Ni source with up to 400 MBq ionizes nitrogen in the reaction region to generate a large number of free (secondary) electrons. Instead of a radioactive source, we use low energetic X-rays to ionize the nitrogen and generate free electrons. Compared to radioactive sources low energetic X-ray sources (below 30 kV and below 0.1 μSv/h 0.1m above touchable surfaces) are not or less restricted by legal regulations [5].
KW - GC detector
KW - non-radioactive electron capture detector
KW - Xray ECD
UR - http://www.scopus.com/inward/record.url?scp=85138213604&partnerID=8YFLogxK
U2 - 10.1515/teme-2022-0059
DO - 10.1515/teme-2022-0059
M3 - Article
AN - SCOPUS:85138213604
VL - 89
SP - 72
EP - 76
JO - Technisches Messen
JF - Technisches Messen
SN - 0171-8096
IS - s1
ER -