caa a22 4500 605546290 CHVBK 20210128100939.0 cr unu---uuuuu 210128e20151101xx s 000 0 eng 10.1007/s00723-015-0714-z doi (NATIONALLICENCE)springer-10.1007/s00723-015-0714-z The Line Width of the EPR Signal of Gaseous Nitric Oxide as Determined by Pressure and Temperature-Dependent X-band Continuous Wave Measurements [Elektronische Daten] [Matthias Mendt, Andreas Pöppl] The electron paramagnetic resonance (EPR) signal of gaseous nitric oxide (NO) has been measured by continuous wave X-band experiments at room temperature at gas pressures between 1mbar and 60mbar and at a gas pressure of 48mbar at different low temperatures. A phenomenological spin Hamiltonian approach allows simulating each EPR signal of NO by changing only a single line width parameter. At room temperature, this line width depends linearly on the NO gas pressure which can be explained by kinetic gas theory. An effective collisional cross section has been determined by this way which is about twice as large as the known cross section for NO derived from viscosity measurements. Experiments with NO gas at low temperatures are consistent to the line width interpretation by kinetic theory. In total, the results demonstrate that in NO adsorption and desorption experiments at different temperatures and NO gas pressures below 60mbar the amount of desorbed NO can simply be determined in situ by the line width of this signal, which one can obtain easily from a conventional simulation procedure. Springer-Verlag Wien, 2015 Mendt Matthias Institut für Experimentelle Physik II, Universität Leipzig, Linnéstr. 5, 04103, Leipzig, Germany aut Pöppl Andreas Institut für Experimentelle Physik II, Universität Leipzig, Linnéstr. 5, 04103, Leipzig, Germany aut Applied Magnetic Resonance Springer Vienna 46/11(2015-11-01), 1249-1263 0937-9347 46:11<1249 2015 46 723 https://doi.org/10.1007/s00723-015-0714-z text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s00723-015-0714-z text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Mendt Matthias Institut für Experimentelle Physik II, Universität Leipzig, Linnéstr. 5, 04103, Leipzig, Germany aut NATIONALLICENCE 700 1- Pöppl Andreas Institut für Experimentelle Physik II, Universität Leipzig, Linnéstr. 5, 04103, Leipzig, Germany aut NATIONALLICENCE 773 0- Applied Magnetic Resonance Springer Vienna 46/11(2015-11-01), 1249-1263 0937-9347 46:11<1249 2015 46 723