Metan Molekülünün Elektron Etkisiyle İyonlaşma Dinamiğinin Çakışma Tekniği ile İncelenmesi

Abstract

The detailed understanding of the interactions with electrons of complex molecules has an important role for the development of theoretical modellings in the atomic and molecular physics’ research. Experimental studies devoted to the understanding of dynamic structures of molecules especially are used to test these theoretical modellings. In this study, experimental binding energy spectrum data of the CH4 molecule obtained by electron-electron coincidence technique using electron spectrometer in the laboratory of collision with electrons (e-COL) will be presented

Keywords

• Methane, collision experiment, ionization dynamics, coincidence technique

Metan Molekülünün Elektron Etkisiyle İyonlaşma Dinamiğinin Çakışma Tekniği ile İncelenmesi

Abstract

Özet: Karmaşık moleküllerin elektronlarla etkileşimlerinin ayrıntılı bir biçimde anlaşılmasının atom ve molekül fiziği araştırmalarında, kuramsal modellemelerin gelişmesinde önemli bir yeri vardır. Özellikle moleküllerin dinamik yapılarının anlaşılmasına yönelik deneysel çalışmalar, bu kuramsal modellemelerin test edilmesinde kullanılmaktadır. Bu çalışmada elektronlarla çarpışma laboratuvarında (e-COL) bulunan elektron spektrometresiyle, elektron-elektron çakışma tekniği kullanılarak alınan deneysel CH4 molekülünün bağlanma enerji spektrumu verileri sunulacaktır. Anahtar kelimeler: Metan, çarpışma deneyi, iyonlaşma dinamiği, çakışma tekniği The Investigation of Electron Impact Ionization Dynamics of Methane Molecule with Coincidence Technique Abstract: The detailed understanding of the interactions with electrons of complex molecules has an important role for the development of theoretical modellings in the atomic and molecular physics' research. Experimental studies devoted to the understanding of dynamic structures of molecules especially are used to test these theoretical modellings. In this study, experimental binding energy spectrum data of the CH4 molecule obtained by electron-electron coincidence technique using electron spectrometer in the laboratory of collision with electrons (e-COL) will be presented. Key words: Methane, collision experiment, ionization dynamics, coincidence technique

Keywords

• Metan, çarpışma deneyi, iyonlaşma dinamiği, çakışma tekniği

References

1. Mc Carthy I. E., Weigold E., 1995. Electron Atom Collisions. Cambridge University Press, UK, p 344.
2. Lahmam Bennani A., 2002. Thirty years of experimental electron-electron (e,2e) coincidence studies: achievements and perspectives, Journal of Electron Spectroscopy and Related Phenomena, 123(2): 365-376.
3. Hood S. T., Weigold E., McCarthy I. E., Teubner P. J. O., 1973. Momentum space wave functions and binding energies of the valence electrons in methane measured by the (e,2e) technique, Nature Physical Science, 245(144): 65-68.
4. Hood S. T., Hamnett A., Brion C. E., 1977. Molecular orbital momentum distributions and binding energies for H2O using an electron impact coincidence spectrometer, Journal of Electron Spectroscopy and Related Phenomena, 11(2): 205-224.
5. Weigold E., Dey S., Dixon A. J., McCarthy I. E., Teubner P. J. O., 1990. (e,2e) Spectroscopy of methane, Physics Letters, 41(1): 21-24.
6. Clark S. A. C., Reddish T. J., Brion C. E., 1990. The valence orbital momentum distributions and binding energy spectra of methane by electron momentum spectroscopy: Quantitative comparisons using near Hartree-Fock limit and correlated wavefunctions, Chemical Physics, 143(1): 1-10.
7. Lahmam-Bennani A., Naja A., Staicu-Casagrande E. M., Okumus N., Dal Cappello C., Charpentier I., Houamer S., 2009. Dynamics of electron impact ionisation of the outer and inner valence (1t2 and 2a1) molecular orbitals of CH4 at intermediate and large ion recoil momentum, Journal of Physics B: Atomic, Molecular and Optical Physics, 42(16): 165201, 1-8.
8. Nixon K. L., Murray Andrew J., Chaluvadi Hari, Ning Chuangang, Madison D. H., 2011. Low energy (e,2e) studies from CH4: Results from symmetric coplanar experiments and molecular three- body distorted wave theory, The Journal of Chemical Physics, 134(17): 174304, 1-8.

9. Nixon K. L., Murray A. J., Chaluvadi H., Amami S., Madison D. H., Ning Chuangang, 2012. Low energy (e,2e) measurements of CH4 and neon in the perpendicular plane, The Journal of Chemical Physics, 136(9): 094302, 1-8.
10. Xu S., Chaluvadi H., Ren X., Pflüger T., Senftleben A., Ning C. G., Yan S., Zhang P., Yang J., Ma X., Ullrich J., Madison D. H., Dorn A., 2012. Low energy (e,2e) study from the 1t2 orbital of CH4, The Journal of Chemical Physics,137(2): 024301, 1-11.
11. Dogan M., Ulu M., Sise O., 2007. Design, simulation and construction of an electron-electron coincidence spectrometer, Journal of Electron Spect. and Related Phenomena, 161: 58-62.
12. Dogan M., Ulu M., Ozer Z. N., Yavuz M., Bozkurt G., 2013. Double differential cross-sections for electron impact ionization of atoms and molecules, Journal of Spectroscopy, 2013(2013): 192917, 1-16.
13. Ozer Z. N., Chaluvadi H., Ulu M., Dogan M., Aktas B., Madison D., 2013. Young's double-slit interference for quantum particles, Physical Review A, 87(4): 042704, 1-8.
14. Dogan M., 2001. Electron impact double ionization of helium from [e(3-1)e] experiments, Turkish Journal of Physics, 25(6): 529-535.
15. Vuskovic L., Trajmar S., 1983. Electron impact excitation of methane. Journal of Chemical Physics, 78(8): 4947-4953.
16. Semiha Bahçeli e posta: [e-mail]
17. Mevlüt Doğan e-posta: [e-mail]