Sülfür Hekzaflorür Molekülünün Elektron Etkisi ile İyonlaşma İkili Diferansiyel Tesir Kesitlerinin Ölçümü

Year 2023, Volume: 23 Issue: 3, 576 - 581, 28.06.2023

Murat Yavuz , Hüseyin Ali Yalım

https://doi.org/10.35414/akufemubid.1301246

Abstract

Sülfür heksaflorür (SF6), küresel ısınma potansiyeli olmasına rağmen yalıtkanlık özellikleri nedeniyle endüstride sık kullanılan bir gazdır. SF6'nın elektron etkisi ile iyonlaşma çalışmaları, özellikle çarpışma sonucu açığa çıkan parçacıkların enerji ve açısal dağılımlarının ölçülmesi, iyonlaşma sürecinin temel fiziksel özellikleri ve SF6 molekülünün yapısı hakkında değerli bilgiler sağlamaktadır. Bu çalışmada, SF6'nın elektron etkisi ile iyonlaşma olayı için ikili diferansiyel tesir kesiti (DDCS) ölçümleri yapılmıştır. SF6 molekülü 50-350 eV enerjili elektronlar ile çarpıştırılarak ortaya çıkan elektronlar enerji ve saçılma açısının fonksiyonu olarak dedekte edilmiştir. Bu çalışmanın bulguları, SF6'ın moleküler yapısı hakkında önemli bilgiler sunmakta olup, molekülün yüklü parçacıklar ile olan etkileşimlerinin anlaşılmasına katkı sağlayacaktır.

Keywords

Elektron spektrometrisi, Elektron-molekül çarpışmaları, İkili diferansiyel tesir kesiti, Sülfür Hekzaflorür

Thanks

Zehra Nur ÖZER

Measurement of Double Differential Cross Sections for Electron Impact Ionization of Sulfur Hexafluoride Molecule

Abstract

Sulfur hexafluoride (SF6) is a widely used insulator in the industry, but it also has a high global warming potential. Studying electron impact ionization of SF6, particularly measuring the energy and angular distributions of the collision products, can provide valuable information about the underlying physics of the collision process and the nature of SF6 molecule. In this study, double differential cross sections (DDCSs) for electron impact ionization of SF6 have measured using a crossed beam experimental setup. The incident electron beam, with an energy range of 50-350 eV, was directed towards a target gas composed of SF6, and scattered electrons were detected as a function of the energy and scattering angle. The findings of this study offer significant insights into the molecular structure of SF6 and will contribute to enhancing the understanding of charged particle interactions involving SF6.

Keywords

Electron spectrometry, Electron-molecule collision, Double differential cross sections, Sulfur Hexafluoride

References

• Al-Nasir, A. H., Chaudhry, M. A., Duncan, A. J., Hippler, R., Campbell, D. M. and Kleinpoppen, H., 1996. Doubly differential cross sections for the ionization of the molecule by electron impact. Journal of Physics B: Atomic, Molecular and Optical Physics, 29(9), 1849–1859.
• Christophorou, L. G. and Olthoff, J. K., 2000. Electron Interactions With SF6. Journal of Physical and Chemical Reference Data, 29(3), 267–330.
• Dogan, M., Ulu, M., Ozer, Z. N., Yavuz, M. and Bozkurt, G., 2013. Double Differential Cross-Sections for Electron Impact Ionization of Atoms and Molecules. Journal of Spectroscopy, 2013, 1–16.
• Fabrikant, I. I., Hotop, H. and Allan, M., 2005. Elastic scattering, vibrational excitation, and attachment in low-energy electron-SF6 scattering: Experiment and effective range theory. Physical Review A, 71(2), 022712.
• Fedus, K., 2022. Low-energy electron elastic scattering by SF6—Modified effective range analysis. The European Physical Journal D, 76(3), 55.
• Giardini‐Guidoni, A., Fantoni, R., Tiribelli, R., Vinciguerra, D., Camilloni, R. and Stefani, G., 2008. Study of electronic properties of the SF6 molecule by (e,2e) spectroscopy. The Journal of Chemical Physics, 71(8), 3182–3188.
• Goswami, B. and Antony, B., 2014. Electron impact scattering by SF6 molecule over an extensive energy range. RSC Advances, 4(58), 30953–30962.
• Joshipura, K. N., Vinodkumar, M., Limbachiya, C. G. and Antony, B. K., 2004. Calculated total cross sections of electron-impact ionization and excitations in tetrahedral (XY4) and SF6 molecules. Physical Review A, 69(2), 022705.
• Nixon, K. L., Murray, A. J., Chaluvadi, H., Ning, C. G., Colgan, J. and Madison, D. H., 2016. Sulphur hexaflouride: Low energy (e,2e) experiments and molecular three-body distorted wave theory. Journal of Physics B: Atomic, Molecular and Optical Physics, 49(19), 195203.
• Pal, S., Kumar, J. and Märk, T. D., 2004. Differential, partial and total electron impact ionization cross sections for SF6. The Journal of Chemical Physics, 120(10), 4658–4663.
• Park, Y., Choi, Y. R., Kim, D.-C., Kim, Y., Song, M.-Y., Kim, Y.-W., Cho, H., Jang, H.-J., Oh, Y.-H. and Song, K.-D., 2022. Total electron scattering cross section of C3F6O at the intermediate-energy region for developing an alternative insulation gas to SF6. Current Applied Physics, 41, 111–115.
• Rabie, M. and Franck, C. M., 2018. Assessment of Eco-friendly Gases for Electrical Insulation to Replace the Most Potent Industrial Greenhouse Gas SF6. Environmental Science & Technology, 52(2), 369–380.
• Wang, C., Cooper, B., Wu, Y., Sun, H. and Tennyson, J., 2021. Why SF6 eats electrons: Identifying high electrical strength molecules from their electron collision properties. Journal of Physics B: Atomic, Molecular and Optical Physics, 54(2), 025202.
• Wang, C., Ma, X., Shi, T., Wang, M. and Yang, C., 2020. Effects of Adiabatic Approximation on The Electron Momentum Spectroscopy of Partially Spherically Symmetric Molecules. Journal of the Physical Society of Japan, 89(7), 074301.
• Wang, X., Xu, S., Ning, C., Al-Hagan, O., Hu, P., Zhao, Y., Xu, Z., Deng, J., Wang, E., Ren, X., Dorn, A. and Madison, D., 2018. Dynamic effects in electron momentum spectroscopy of sulfur hexafluoride. Physical Review A, 97(6), 062704.
• Wang, Y., Huang, D., Liu, J., Zhang, Y. and Zeng, L., 2019. Alternative Environmentally Friendly Insulating Gases for SF6. Processes, 7(4), Article 4.
• Watanabe, N., Hirayama, T. and Takahashi, M., 2019. Vibrational effects on electron-impact valence excitations of SF6. Physical Review A, 99(6), 062708.
• Watanabe, N., Yamazaki, M. and Takahashi, M., 2016. Relationship between interference pattern and molecular orbital shape in (e, 2e) electron momentum profiles of SF6. Journal of Electron Spectroscopy and Related Phenomena, 209, 78–86.
• Winstead, C. and McKoy, V., 2004. Low-energy electron collisions with sulfur hexafluoride, SF6. The Journal of Chemical Physics, 121(12), 5828–5835.
• Yavuz, M., Isik, N., Ozer, Z. N., Ulu, M., Dogan, M., Sahlaoui, M., Benmansour, N. E. H., Lasri, B. and Bouamoud, M., 2014. Comprehensive experimental and theoretical study of double-differential cross sections for CH4 at 300 and 350 eV incident electron energies. Canadian Journal of Physics, 92(12), 1676–1680.
• Yavuz, M., Ozer, Z. N., Ulu, M., Champion, C. and Dogan, M., 2016. Experimental and theoretical double differential cross sections for electron impact ionization of methane. The Journal of Chemical Physics, 144(16), 164305.
• Zhao, M., Shan, X., Yang, J., Wang, E., Niu, S. and Chen, X., 2015. Observation of Interference Effects in (e, 2e) Electron Momentum Spectroscopy of SF6. Chinese Journal of Chemical Physics, 28(5), 539–544.