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tm - Technisches Messen

Plattform für Methoden, Systeme und Anwendungen der Messtechnik

[TM - Technical Measurement: A Platform for Methods, Systems, and Applications of Measurement Technology
]

Editor-in-Chief: Puente León, Fernando / Zagar, Bernhard

12 Issues per year


IMPACT FACTOR 2014: 0.123

SCImago Journal Rank (SJR) 2014: 0.153
Source Normalized Impact per Paper (SNIP) 2014: 0.197
Impact per Publication (IPP) 2014: 0.141

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Fasergekoppeltes In-situ-Laserspektrometer für den selektiven Nachweis von Wasserdampfspuren bis in den ppb-Bereich (Fibre-Coupled In-situ Laser Absorption Spectrometer for the Selective Detection of Water Vapour Traces down to the ppb-Level)

Volker Ebert / Holger Teichert / Carsten Giesemann / Harald Saathoff / Ulrich Schurath

Citation Information: tm – Technisches Messen/Plattform für Methoden, Systeme und Anwendungen der Messtechnik. Volume 72, Issue 1/2005, Pages 23–30, ISSN (Print) 0171-8096, DOI: 10.1524/teme.72.1.23.56689, September 2009

Publication History

Published Online:
2009-09-25

Abstract

Ein neues, glasfasergekoppeltes In-situ-Absorptionsspektrometer auf Basis von Nah-Infrarot(NIR)-Diodenlasern eröffnet im Hinblick auf den in Industrie und Forschung bedeutenden In-situ-H2O-Nachweis neue Möglichkeiten, da es erstmals auch in mehrphasigen Gasströmungen die schnelle, selektive, probennahme- und kalibrationsfreie Feuchtemessung gestattet. Aufwändige Tests in der cryogenen Aerosolkammer AIDA ermöglichten mit einer gefalteten Absorptionstrecke von 82 m selbst in dichten Eiswolken eine Nachweisgrenze von 15 ppb (1σ, Δt = 2 s) und demonstrierten gleichzeitig die erste präzise Bestimmung der dynamischen Übersättigung der Gasphase während der Wolkenbildung.

Abstract

A new fibre-coupled in-situ absorption spectrometer based on near IR diode lasers was developed for applications in basic research and industry. Its ability to detect H2O vapour selectively, calibration-free and without the need of probe sampling enables for the first time humidity measurements even in multi-phase flows. Long-term tests at the cryogenic aerosol chamber AIDA indicated even in dense ice clouds a detection limit of 15 ppb (1σ , Δ t = 2 s) when using a folded absorption path of 82 m. This simultaneously demonstrated the first precise determination of the dynamic vapour phase super saturation during ice cloud formation.

Citing Articles

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[1]
B. Kühnreich, S. Wagner, J. C. Habig, O. Möhler, H. Saathoff, and V. Ebert
Applied Physics B, 2015, Volume 119, Number 1, Page 177
[2]
B Buchholz and V Ebert
Measurement Science and Technology, 2014, Volume 25, Number 7, Page 075501
[3]
Julian Skrotzki, Jan Christoph Habig, and Volker Ebert
Applied Physics B, 2014, Volume 116, Number 2, Page 393
[4]
T. Leisner, D. Duft, O. Mohler, H. Saathoff, M. Schnaiter, S. Henin, K. Stelmaszczyk, M. Petrarca, R. Delagrange, Z. Hao, J. Luder, Y. Petit, P. Rohwetter, J. Kasparian, J.-P. Wolf, and L. Woste
Proceedings of the National Academy of Sciences, 2013, Volume 110, Number 25, Page 10106
[5]
Monika Niemand, Ottmar Möhler, Bernhard Vogel, Heike Vogel, Corinna Hoose, Paul Connolly, Holger Klein, Heinz Bingemer, Paul DeMott, Julian Skrotzki, and Thomas Leisner
Journal of the Atmospheric Sciences, 2012, Volume 69, Number 10, Page 3077
[6]
Stefan Benz, Khaled Megahed, Ottmar Möhler, Harald Saathoff, Robert Wagner, and Ulrich Schurath
Journal of Photochemistry and Photobiology A: Chemistry, 2005, Volume 176, Number 1-3, Page 208
[7]
Roland Schön, Martin Schnaiter, Zbigniew Ulanowski, Carl Schmitt, and Stefan Benz
Journal of Atmospheric and Oceanic Technology, 2011, Volume 28, Number 4, Page 493
[8]
Andrew R. Awtry, Brian T. Fisher, Robert A. Moffatt, Volker Ebert, and James W. Fleming
Proceedings of the Combustion Institute, 2007, Volume 31, Number 1, Page 799
[9]
E. M. Weinstock, J. B. Smith, D. S. Sayres, J. V. Pittman, J. R. Spackman, E. J. Hintsa, T. F. Hanisco, E. J. Moyer, J. M. St. Clair, M. R. Sargent, and J. G. Anderson
Journal of Geophysical Research, 2009, Volume 114, Number D23
[10]
Karl Wunderle, Steven Wagner, Igor Pasti, Roland Pieruschka, Uwe Rascher, Ulrich Schurr, and Volkert Ebert
Applied Optics, 2009, Volume 48, Number 4, Page B172
[11]
S. Hunsmann, K. Wunderle, S. Wagner, U. Rascher, U. Schurr, and V. Ebert
Applied Physics B, 2008, Volume 92, Number 3, Page 393
[12]
O Möhler, S Benz, H Saathoff, M Schnaiter, R Wagner, J Schneider, S Walter, V Ebert, and S Wagner
Environmental Research Letters, 2008, Volume 3, Number 2, Page 025007

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