Electron scattering cross sections from nitrobenzene in the energy range 0.4-1000 eV: the role of dipole interactions in measurements and calculations

Physical Chemistry Chemical Physics : PCCP
L ÁlvarezGustavo García

Abstract

Absolute total electron scattering cross sections (TCS) for nitrobenzene molecules with impact energies from 0.4 to 1000 eV have been measured by means of two different electron-transmission experimental arrangements. For the lower energies (0.4-250 eV) a magnetically confined electron beam system has been used, while for energies above 100 eV a linear beam transmission technique with high angular resolution allowed accurate measurements up to 1000 eV impact energy. In both cases random uncertainties were maintained below 5-8%. Systematic errors arising from the angular and energy resolution limits of each apparatus are analysed in detail and quantified with the help of our theoretical calculations. Differential elastic and integral elastic, excitation and ionisation as well as momentum transfer cross sections have been calculated, for the whole energy range considered here, by using an independent atom model in combination with the screening corrected additivity rule method including interference effects (IAM-SCARI). Due to the significant permanent dipole moment of nitrobenzene, additional differential and integral rotational excitation cross sections have been calculated in the framework of the Born approximation. If we igno...Continue Reading

References

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Feb 23, 2020·Physical Chemistry Chemical Physics : PCCP·Sahil GulaniaAnna I Krylov

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Citations

Sep 26, 2020·International Journal of Molecular Sciences·Filipe CostaGustavo García

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Methods Mentioned

BETA
X-ray
electron scattering
total electron scattering
IECS
electron
total
electron-molecule scattering

Software Mentioned

SCARI
IAM
MCEB

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