Zobrazeno 1 - 10
of 16
pro vyhledávání: '"Alexander Bohnhorst"'
Autor:
Florian Schlottmann, Christoph Schaefer, Ansgar T. Kirk, Alexander Bohnhorst, Stefan Zimmermann
Publikováno v:
Journal of the American Society for Mass Spectrometry. 34:893-904
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c0d696b098aa3e47ff1127acfc10fcd4
https://doi.org/10.1021/jasms.2c00365
https://doi.org/10.1021/jasms.2c00365
Publikováno v:
tm - Technisches Messen. 89:847-858
Low-noise current meters are usually designed using high value feedback resistors. However, a high resistance reduces the maximum measurable current at a given output voltage and the maximum bandwidth at a given parasitic capacitance. Capacitive tran
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6e498059d21b00b6c93c2259ebbb65fe
https://doi.org/10.1515/teme-2022-0049
https://doi.org/10.1515/teme-2022-0049
Publikováno v:
Analytical Chemistry 95 (2023), Nr. 18
Analytical Chemistry
Analytical Chemistry
In this work, we present a tandem ion mobility spectrometer (IMS) utilizing a highly efficient ion manipulator allowing to store, manipulate, and analyze ions under high electric field strengths and controlled ion-neutral reactions at ambient conditi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::998172e06d9f41f23bb84ffcf4e75cfe
https://www.repo.uni-hannover.de/handle/123456789/14247
https://www.repo.uni-hannover.de/handle/123456789/14247
Publikováno v:
Analytical Chemistry. 93:6062-6070
Printed circuit board (PCB) based drift tube ion mobility spectrometers enable the use of state-of-the-art production techniques to manufacture compact devices with excellent performance at minimum cost. The new PCB ion mobility spectrometer (PCB-IMS
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a4fce3aa186ae3d19b7423d118c233fa
https://doi.org/10.1021/acs.analchem.0c04140
https://doi.org/10.1021/acs.analchem.0c04140
Publikováno v:
tm - Technisches Messen. 88:262-273
While the resolving power of drift tube ion mobility spectrometers has been studied and modelled in detail over the past decades, no comparable model exists for the signal-to-noise-ratio. In this work, we develop an analytical model for the signal-to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::05c4c69c54d7cdd799145597db1fc335
https://doi.org/10.1515/teme-2021-0013
https://doi.org/10.1515/teme-2021-0013
Publikováno v:
Journal of the American Society for Mass Spectrometry : JASMS online 31 (2020), Nr. 7
High Kinetic Energy Ion Mobility Spectrometers (HiKE-IMS) are usually operated at an absolute pressure of 20 mbar reaching high reduced electric field strengths of up to 125 Td for controlled reaction kinetics. This significantly increases the linear
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::452800234dc199c7b30dc0b89c920a72
https://doi.org/10.1021/jasms.0c00098
https://doi.org/10.1021/jasms.0c00098
Autor:
Alexander Bohnhorst, Martin Lippmann, Maximilian J. Kueddelsmann, Ansgar T. Kirk, Stefan Zimmermann
Publikováno v:
Analytical Chemistry. 92:4838-4847
Field switching ion shutters allow generating short ion packets with high ion densities by first ionizing for several milliseconds in a field-free ionization region and then quickly pushing the entire ion population out into the drift region. Thus, t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::de49a28ac18c864df658a260d7da551f
https://doi.org/10.1021/acs.analchem.9b04259
https://doi.org/10.1021/acs.analchem.9b04259
Publikováno v:
Analytical chemistry. 94(2)
Ion mobility spectrometers (IMS) are well suited for detecting trace gases down to levels at ppb
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::71a380b3671ccc47100cc20ca4a078db
https://pubmed.ncbi.nlm.nih.gov/34984907
https://pubmed.ncbi.nlm.nih.gov/34984907
Publikováno v:
Analytical Chemistry. 91:8941-8947
Collision induced dissociation (CID) is a widely used technique in mass spectrometry to better understand the structural composition of ions and to improve the identification of compounds beyond the analysis of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::100d581673ae641cce39edca25f5c61a
https://doi.org/10.1021/acs.analchem.9b00810
https://doi.org/10.1021/acs.analchem.9b00810
Publikováno v:
Journal of the American Society for Mass Spectrometry. 30:1813-1823
Ion funnels are one of the key components for transferring ions from higher pressure into the vacuum. Typically, ion funnels are constructed of several different plate ring electrodes with a decreasing inner diameter where radio frequency (RF) voltag
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::248ce04b3f78e2ec25e9e8f5aefdefab
https://doi.org/10.1007/s13361-019-02241-3
https://doi.org/10.1007/s13361-019-02241-3