Zobrazeno 1 - 10
of 15
pro vyhledávání: '"Erik Bunert"'
Publikováno v:
Proceedings, Vol 1, Iss 4, p 443 (2017)
Gas chromatographs equipped with electron capture detectors (ECD) are widely used for the analysis of electron affine substances. Achieving limits of detection in the low pptv-range, electron capture detectors are the most sensitive detectors availab
Externí odkaz:
https://doaj.org/article/db439230f7cb4d92b4a7abed2ea43241
Publikováno v:
tm - Technisches Messen. 89:72-76
Zusammenfassung In dieser Arbeit wird ein Elektroneneinfangdetektor basierend auf weicher Röntgenionisation mit vergleichbarer Performance bezüglich radioaktiver Elektroneneinfangdetektoren mit geringsten Nachweisgrenzen im pptv-Bereich und einer L
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7f164179fadc0ef16c9139ce0d120f6c
https://doi.org/10.1515/teme-2022-0059
https://doi.org/10.1515/teme-2022-0059
Publikováno v:
International Journal for Ion Mobility Spectrometry. 22:21-29
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-dim
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::feb45b0d593fc422ca6a0ac2e1372788
https://doi.org/10.1007/s12127-018-0241-3
https://doi.org/10.1007/s12127-018-0241-3
Publikováno v:
The Review of scientific instruments. 90(11)
Ion mobility spectrometers (IMSs) are well-known instruments for fast and ultrasensitive trace gas detection. In recent years, we introduced a compact nonradioactive electron source providing a defined current of free electrons with high kinetic ener
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::37184d361237097a71f81b85dcd1b963
https://pubmed.ncbi.nlm.nih.gov/31779458
https://pubmed.ncbi.nlm.nih.gov/31779458
Publikováno v:
Journal of chromatography. A. 1606
With detection limits in the low ppbv-range, electron capture detectors (ECD) are the most sensitive GC-detectors available for electron affine compounds, such as pesticides or chlorofluorocarbons. The working principle is based on the generation of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3b176973d1683e5f5336255d84b7337f
https://pubmed.ncbi.nlm.nih.gov/31371199
https://pubmed.ncbi.nlm.nih.gov/31371199
Autor:
Ansgar T. Kirk, Tobias Reinecke, Erik Bunert, Stefan Zimmermann, Igor Niedzwiecki, Andre Heptner, N. Angerstein
Publikováno v:
International Journal for Ion Mobility Spectrometry. 19:175-182
For the ionization of gas mixtures, several ionization sources can be coupled to an ion mobility spectrometer. Radioactive sources, e.g. beta radiators like 63Ni and 3H, are the most commonly used ionization sources. However, due to legal restriction
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::41671fa8259e177a66fd4b61ea81ab24
https://doi.org/10.1007/s12127-016-0205-4
https://doi.org/10.1007/s12127-016-0205-4
Publikováno v:
Talanta 185 (2018)
Ion mobility spectrometers (IMS) are compact devices for extremely sensitive detection of proton and electron affine volatile compounds down to low pptv concentrations within less than a second. The measuring principle requires ionization of the targ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::af10d8f80f340057909badbbe169ddf3
https://www.repo.uni-hannover.de/handle/123456789/4450
https://www.repo.uni-hannover.de/handle/123456789/4450
Publikováno v:
2017 30th International Vacuum Nanoelectronics Conference (IVNC).
In this work, a p-Si field emitter array produced by wafer dicing is presented. Different strategies to produce a variety of shapes of the tips are shown. The resulting arrays show excellent emission characteristics compared to other field emitter, l
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e4c0323b63ef9eedb98ee85c8361e0d1
https://doi.org/10.1109/ivnc.2017.8051577
https://doi.org/10.1109/ivnc.2017.8051577
Autor:
Alexander Kusch, Ansgar T. Kirk, Marc Christopher Wurz, Andre Heptner, Stefan Zimmermann, Oliver Kabein, Erik Bunert
Publikováno v:
2017 30th International Vacuum Nanoelectronics Conference (IVNC).
Ion mobility spectrometers (IMS) are measurement devices for fast and ultra-sensitive trace gas analysis. Most IMS employ radioactive electron sources, such as 3 H or 63 Ni, to provide free electrons with high kinetic energy at atmospheric pressure f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0cf846ada9962f1ad4f420eebf4be775
https://doi.org/10.1109/ivnc.2017.8051563
https://doi.org/10.1109/ivnc.2017.8051563
Publikováno v:
Review of Scientific Instruments 88 (2017)
Ion mobility spectrometers (IMS) are devices for fast and very sensitive trace gas analysis. The measuring principle is based on an initial ionization process of the target analyte. Most IMS employ radioactive electron sources, such as 63Ni or 3H. Th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7b5f7568c5d946f5c0b806a6aca238fd
https://www.repo.uni-hannover.de/handle/123456789/4452
https://www.repo.uni-hannover.de/handle/123456789/4452