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November 13-14, 2017 Paris, France
5th International Conference on
PLASMA CHEMISTRY AND
PLASMA PROCESSING
Journal of Biotechnology and Phytochemistry
Volume 1, Issue 2 Plasma Chemistry 2017
Cross-sections and dissociation rate constants for rare
gas ions colliding with their parent gas in cold plasma
jet for biomedical applications
Benhenni Malika and Kalus Rene
University of Toulouse, France
Momentum transfer cross-sections for the non-dissociative
ion scattering and collision-induced dissociation is
calculated for different rare gas dimer cations (He2+, Ar2+, and
Ne2+) in a collision with their respective parent gas. Different
methods (quantum, hybrid, and inverse) have been used for
momentum transfer cross-section in the ion collision energy
range (0.01 - 100) eV. While a full quantum treatment is used in
the quantum case, the hybrid dynamical method uses a classical
treatment for nuclei and quantum treatment for electrons where
the electronicHamiltonian is calculated via aDIMsemi-empirical
model. On the other hand, the inverse method, based on a simple
isotropic potential and JWKB semiclassical approximation,
uses measured ion mobility to extract ion momentum transfer
collision cross-sections. These calculated cross sections are
used in an optimized Monte Carlo code that simulates the ion
trajectory to obtain He2 +, Ar2 + and Ne2 + reaction rates and
transport coefficients over a wide reduced electric field range.
The obtained dissociation reaction rate data are compared to
measurements when available (for Ne2 + dissociation only) in
the literature. These calculated dimer cation dissociation rate
constants are necessary as input data in electrohydrodynamic
and chemical plasma models of the low-temperature plasma jets
to quantify and optimize the production of active species for
biomedical applications.
Biography
Benhenni Malika obtained her PhD in atomic physics from University of North
Carolina at Chapel Hill, USA, in 1990 and concerns the electron capture
and excitation processes by auger electron spectroscopy for hot plasma
applications. She was a research assistant in Laboratoire Grenoblois des
Ions, plasmas et physique atomique in 1991. She is an associate professor
at University of Toulouse III- Paul Sabatier in France. Her current research is
carried out in Laboratoire Plasmas et Conversion d’Energie and focuses on
modelling of basic data for cold plasma applications such as biomedicine, flue
gas pollution control, etc. She is referee in several international journals.
Benhenni Malika et al., J Biot Phyt 2017