Santos, M. A.G.Kaja, Magdalena A.Cortez, André F.V.Neves, Pedro N.B.Santos, Filomena P.Borges, F. I.G.M.Conde, Carlos A.N.2023-10-202023-10-202018-03-28Santos, M. A. G. vd. (2018). ''Experimental ion mobility measurements for the LCTPC collaboration - Ar-CF4 mixtures''. Journal of Instrumentation, 13(4).1748-0221https://doi.org/10.1088/1748-0221/13/04/P04012https://iopscience.iop.org/article/10.1088/1748-0221/13/04/P04012http://hdl.handle.net/11452/34469In this paper we present the results of the ion mobility measurements made in pure carbon tetrafluoride (CF4) and gaseous mixtures of argon with carbon tetrafluoride (Ar-CF4) for pressures ranging from 6 to 10 Torr (8-10.6 mbar) and for low reduced electric fields in the 10 Td to 25 Td range (2.4-6.1 kV center dot cm(-1)center dot bar(-1)), at room temperature. The time of arrival spectra revealed only one peak throughout the entire range studied which was attributed to CF3+. However, for Ar concentrations above 70%, a bump starts to appear at the left side of the main peak for reduced electric fields higher than 15 Td, which was attributed to impurities. The reduced mobilities obtained from the peak centroid of the time-of-arrival spectra are presented for Ar concentrations in the 5%-95% range.eninfo:eu-repo/semantics/openAccessInstruments & instrumentationCharge transport and multiplication in gasLonization and excitation processesGaseous detectorsLon sources (positive ionsNegative ionsElectron cyclotron resonance (ECR)Electron beam (EBIS))IonizationThresholdCHF3NE+CF4CyclotronsElectric fieldsLon sourcesIonization of gasesMixturesNegative ionsPositive ionsTime of arrivalCarbon tetrafluorideExcitation processGaseous detectorsGaseous mixtureLon-mobility measurementsElectron cyclotron resonanceArticle0004294115000012-s2.0-85046794974134Instruments & instrumentationGas; Neon; Carbon Tetrafluoride