Experimental ion mobility measurements for the LCTPC collaboration - Ar-CF4 mixtures
Date
2018-03-28
Journal Title
Journal ISSN
Volume Title
Publisher
IOP Publishing
Abstract
In 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.
Description
Keywords
Instruments & instrumentation, Charge transport and multiplication in gas, Lonization and excitation processes, Gaseous detectors, Lon sources (positive ions, Negative ions, Electron cyclotron resonance (ECR), Electron beam (EBIS)), Ionization, Threshold, CHF3, NE+, CF4, Cyclotrons, Electric fields, Lon sources, Ionization of gases, Mixtures, Negative ions, Positive ions, Time of arrival, Carbon tetrafluoride, Excitation process, Gaseous detectors, Gaseous mixture, Lon-mobility measurements, Electron cyclotron resonance
Citation
Santos, M. A. G. vd. (2018). ''Experimental ion mobility measurements for the LCTPC collaboration - Ar-CF4 mixtures''. Journal of Instrumentation, 13(4).