| Zugriffsnummer | 52830 |
| Dokumenttyp | Zeitschriftenartikel |
| Peer Review | mit Peer Review |
| Sprache | Englisch |
| Titel | Absolute electron impact ionization cross-sections for CF4: Three dimensional recoil-ion imaging combined with the relative flow technique |
| Autor(in); Institution |
Wolff, Wania; Federal University of Rio de Janeiro, Physics Institute, Rio de Janeiro, BRAZIL
Dogan, M.; Max Planck Institute for Nuclear Physics, Heidelberg, GERMANY
Luna, H.; Federal University of Rio de Janeiro, Physics Institute, Rio de Janeiro, BRAZIL
Coutinho, L. H.; Federal University of Rio de Janeiro, Physics Institute, Rio de Janeiro, BRAZIL
Mootheril, D.; Max Planck Institute for Nuclear Physics, Heidelberg, GERMANY
Baek, Woon Yong; 6.3, Strahlenschutzdosimetrie, PTB-Braunschweig
Pfeifer, T.; Max Planck Institute for Nuclear Physics, Heidelberg, GERMANY
Dorn, Alexander; Max Planck Institute for Nuclear Physics, Heidelberg, GERMANY
|
| Quelle/Jahr | Review of Scientific Instruments: 95 (2024), 9, 095103-1 - 095103-10 |
| Artikelnummer | 095103 |
| ISSN | 0034-6748 (print) ; 1089-7623 (online) |
| DOI | |
| Verlag | Melville, NY: American Institute of Physics (AIP) |
| Zusammenfassung | Here we present measurements of dissociative and non-dissociative cross-sections for the electron impact of the CF4 molecule. The present experiments are based on a Recoil Ion Momentum Spectrometer (RIMS), a standard gas mixing setup for CF4, and a reference gas. The measurements were carried out at several electron energies up to 1 keV, covering the energy range of previous experiments. We apply the relative flow technique (RFT) to convert the relative cross-sections measured by the RIMS into absolute values. Using the combination of RIMS and RFT, ion collection and calibration errors were minimized. The results were compared with theoretical and experimental studies available in the literature. Previous electron impact experiments present relative cross-sections or use correction terms for the absolute cross-sections due to losses of energetic ions. We elucidate the differences between the new measurement method and the existing ones in the literature and explain why the present method can be considered reliable. Furthermore, we show how reducing correction terms affects the results. |
| Kostenfreier Zugang | Open Access Hybrid |
| Rechteinformation | CC BY 4.0 ; Creative Commons Attribution 4.0 License |
| Themenbereich der Metrologie | Ionisierende Strahlung |
| Innovationscluster | Umwelt und Klima |
| Forschungsprojekt | 21GRD02: BIOSPHERE: Metrology for Earth Biosphere: Cosmic rays, ultraviolet radiation and fragility of ozone shield |
| Förderinformationen (1) |
Förderername: European Commission (EC)
Förderer ID: 0000 0001 2242 8989 Förderer ID Typ: ISNI Förderprogramm: Metrology Partnership 2021 Green Deal Titel der Förderung: 21GRD02: BIOSPHERE: Metrology for Earth Biosphere: Cosmic rays, ultraviolet radiation and fragility of ozone shield Förderungsnummer: 21GRD02 |
Zitierung
Wolff, W., Dogan, M., Luna, H., Coutinho, L. H., Mootheril, D., Baek, W. Y., Pfeifer, T., & Dorn, A. (2024). Absolute electron impact ionization cross-sections for CF4: Three dimensional recoil-ion imaging combined with the relative flow technique. Review of Scientific Instruments, 95(9), 095103-1–095103-10. https://doi.org/10.1063/5.0219527