Electron scattering cross sections of trans-1,3,3,3-tetrafluoropropene HFO1234ze(E)
Journal of Physics D: Applied Physics, vol.59, no.20, 2026 (SCI-Expanded, Scopus)
- Publication Type: Article / Article
- Volume: 59 Issue: 20
- Publication Date: 2026
- Doi Number: 10.1088/1361-6463/ae6871
- Journal Name: Journal of Physics D: Applied Physics
- Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Chemical Abstracts Core, Compendex, INSPEC
- Keywords: ab initioquantum chemistry calculations, cross sections, electron energy loss spectroscopy, electron swarm parameter, pulsed townsend, VUV Photoabsorption
- Bursa Uludag University Affiliated: Yes
Abstract
The environmentally friendly refrigerant trans-1,3,3,3-tetrafluoropropene HFO1234ze(E) is a promising alternative to replace 1,1,1,2-tetrafluoroethane R134a in particle detectors and SF6 in high-voltage-engineering applications. A set of electron-molecule scattering cross sections for HFO1234ze(E) up to 300 keV is presented. Initial experimental information was obtained by means of electron-energy-loss spectroscopy, providing insight into the vibrational and electronic excitations in HFO1234ze(E). Additional information on the excited electronic states was obtained from vacuum-ultraviolet photoabsorption spectroscopy and from ab initio quantum chemistry calculations. The cross sections were refined based on electron-transport-coefficient measurements performed on a pulsed Townsend apparatus. The occurrence of an unspecific vibrational excitation is observed and its effect on the electron-transport coefficients is elaborated. The previously investigated positive synergy in the reduced critical electric field strength of SF6 and HFO1234ze(E) mixtures is discussed. The resulting cross-section set is implemented in both magboltz and degrad, allowing accurate simulations for gaseous detectors and electrical insulation technologies. The cross sections are published in the open-access database LXCat.