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A round-robin test of thermal desorption spectroscopy with quadrupole mass spectrometers calibrated by standard conductance element
Affiliation:1. School of Transportation Science and Engineering, Beijing Key Laboratory for Cooperative Vehicle Infrastructure Systems and Safety Control, Beihang University, Beijing 100191, China;2. School of Economics and Management, Beihang University, Beijing 100191, China;3. Beijing Key Lab of Urban Intelligent Traffic Control Technology, North China University of Technology, Beijing 100041, China;4. Department of Mathematics and Statistics, Curtin University, WA 6845, Australia;1. Photonics Research Centre, University of Malaya, 50603 Kuala Lumpur, Malaysia;2. Department of Physics, Northwest University, Xi’an, Shaanxi 710069, China;3. Department of Electrical and Electronic Engineering, The University of Nottingham Malaysia Campus, 43500, Malaysia;1. Department of Physics, National Technical University of Athens, Zografou, 15780 Athens, Greece;2. Department of Physics and Astronomy, Texas A&M University, College Station, TX 77843, USA;3. Ion Physics/Applied Nuclear Physics, Department of Physics and Astronomy, Ångström Laboratory, Uppsala University, SE-751 20 Uppsala, Sweden;4. Tandem Accelerator Laboratory, Institute of Nuclear Physics, N.C.S.R. “Demokritos”, Aghia Paraskevi, 15310 Athens, Greece;5. Laboratory for Ion Beam Interactions, Department of Experimental Physics, Institute Ruđer Bošković, Bijenička cesta 54, 10000 Zagreb, Croatia;6. Center for Medical Physics and Radiation Protection, KBC Rijeka, Krešimirova 42, 51000 Rijeka, Croatia;1. JET-EFDA, Culham Science Centre, OX14 3DB Abingdon, UK;2. CEA, IRFM, F-13108 Saint-Paul-lez-Durance, France;3. Forschungszentrum Jülich, Institut für Energie und Klimaforschung Plasmaphysik, 52425 Jülich, Germany;4. Culham Centre for Fusion Energy, Abingdon, Oxon OX14 3DB, UK;5. IST, Instituto de Plasmas e Fusão Nuclear, IST Lisboa, Portugal;6. ENEA sulla Fusione, Via E. Fermi 45, I-00044 Frascati, Italy
Abstract:The results of a round-robin test of thermal desorption spectroscopy (TDS) in which the quadrupole mass spectrometer of each participant was calibrated in-situ by a standard conductance element are reported. The desorption rate from three commercially available reference materials was quantified from the calibration results, and compared among the three participants. The total reported desorption amounts of hydrogen and argon molecules from the reference materials showed agreement within about 10%. The degree of equivalence of three TDS apparatuses was discussed. It is also shown that the quantification of the gas desorption amounts yields us the appropriate relative ratio between desorbed gas species.
Keywords:Vacuum  Thermal desorption spectroscopy  TDS  Calibration  Quadrupole mass spectrometer
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