Speaker
Annarita Laricchiuta
Description
See the full Abstract at http://ocs.ciemat.es/EPS2018ABS/pdf/I5.311.pdf
Electron-CO excitation cross sections for plasma modelling
A. Laricchiuta, L.D. Pietanza, M. Capitelli, G. Colonna
PLASMI Lab NANOTEC CNR Bari (Italy)
The plasma activation of CO2 in different plasma regimes is nowadays attracting large in-
terest in the scientific community, representing a promising new-concept technology for the
conversion of anthropogenic CO2 emissions. The non-equilibrium conditions met in plasmas
could, in fact, selectively promote reactive channels leading to efficient dissociation and, in
turn, to the formation of CO. The detailed description of the vibrational and electronic state
kinetics within the state-to-state approach can considerably contribute to the understanding
of the collisional mechanisms that critically determines the conversion efficiency [1, 2, 3, 4].
The electron-impact induced disso-
ciative and non-dissociative excita- 20.0
excitation cross section
tions for dipole-allowed transitions in 15.0
[10-18 cm2]
CO molecule are here reconsidered
10.0
in the framework of the similarity
approach [5] for the derivation of 5.0
vibrationally-specific dynamical data.
0.0
0 1 2 3 4 5 6 7 8 9 10
In Fig. 1 the (X1 Σ+ , υ 00 ) → (A1 Π, υ 0 )
final vibrational level υ �
cross sections, obtained optimizing the
1 + 00 1 0
similarity function parameters for the Figure 1: Cross sections for (X Σ , υ = 0) →(A Π, υ )
total excitation cross section from the excitations in e-CO collisions (solid line) at E=30 eV,
compared with experiments (close circles) [6] (open dia-
υ 00 = 0 level, are compared with experi-
monds) [7] and BE f theoretical results (dashed line) [6].
mental and theoretical results [6, 7].
The effect of non-adiabatic vibronic
coupling in the excitations to the B1 Σ+ -D01 Σ+ Rydberg-valence complex, is also investigated.
References
[1] M. Capitelli, G. Colonna, G. D’Ammando and L.D. Pietanza, Plasma Sources Sci. Technol. 26 055009 (2017)
[2] A. Bogaerts, W. Wang, A. Berthelot and V. Guerra, Plasma Sources Sci. Technol. 25 055016 (2016)
[3] L.D. Pietanza, G. Colonna and M. Capitelli, Plasma Sources Sci. Technol. 26 125007 (2017)
[4] L.D. Pietanza, G. Colonna and M. Capitelli, J. Plasma Phys. 83 6 (2017)
[5] S. Adamson, V. Astapenko, M. Deminskii, A. Eletskii, B. Potapkin, L. Sukhanov, A. Zaitsevskii, Chem. Phys.
Lett. 436 308 (2007)
[6] H. Kato, H. Kawahara, M. Hoshino, H. Tanaka, M.J. Brunger, Y.-K. Kim, J. Chem. Phys. 126 064307 (2007)
[7] M.J. Mumma, E.J. Stone and E.C. Zipf, J. Chem. Phys. 54 2627 (1971)
