Publicou 4 edições por ano
ISSN Imprimir: 1093-3611
ISSN On-line: 1940-4360
Indexed in
KINETIC SIMULATION OF DISCHARGES AND AFTERGLOWS IN MOLECULAR GASES
RESUMO
A detailed kinetic model is designed and developed in order to investigate gas discharges in molecular plasmas and their afterglows. The theoretical formulation comprises the description of the electron, vibrational, chemical, ionic and surface kinetics.
The model is applied to study and interpret two rather different phenomena. The first one is the nitrogen pink afterglow. It is established that the maxima present in the concentrations of several species - which appear downstream from the discharge in a flowing nitrogen afterglow, in a field-free region and after a dark zone - are formed as a result of the V-V up-pumping of N2(Χ1Σ+g) molecules, followed by V-E transfers producing locally the metastable states N2(Α3Σ+u) and N2(α,1Σ−u). The need for an accurate description of the high vibrational levels is pointed out. The vibrational energy levels are recalculated from the RKR method and used additionally in the study of dissociation in extreme re-entry conditions.
The second application is the study of a plasma sterilization system using an Ar-O2 mixture. It is shown that the Ar(4s) do not survive long enough to be responsible for the UV/VUV emissions in the reactor, and that O2 is strongly dissociated. Moreover, the choice of the wall material can contribute significantly to create a more homogeneous distribution of several active species.
-
Primc Gregor, Zaplotnik Rok, Vesel Alenka, Mozetic Miran, Microwave discharge as a remote source of neutral oxygen atoms, AIP Advances, 1, 2, 2011. Crossref
-
Capitelli M, Celiberto R, Colonna G, D'Ammando G, De Pascale O, Diomede P, Esposito F, Gorse C, Laricchiuta A, Longo S, Pietanza L D, Taccogna F, Plasma kinetics in molecular plasmas and modeling of reentry plasmas, Plasma Physics and Controlled Fusion, 53, 12, 2011. Crossref
-
Capitelli M., Armenise I., Bisceglie E., Bruno D., Celiberto R., Colonna G., D’Ammando G., De Pascale O., Esposito F., Gorse C., Laporta V., Laricchiuta A., Thermodynamics, Transport and Kinetics of Equilibrium and Non-Equilibrium Plasmas: A State-to-State Approach, Plasma Chemistry and Plasma Processing, 32, 3, 2012. Crossref
-
Garcia Ernesto, Martínez Teresa, Laganà Antonio, Quasi-resonant vibrational energy transfer in N2+N2 collisions: Effect of the long-range interaction, Chemical Physics Letters, 620, 2015. Crossref
-
Esposito F, Garcia E, Laganà A, Comparisons and scaling rules between N+N2and N2+N2collision induced dissociation cross sections from atomistic studies, Plasma Sources Science and Technology, 26, 4, 2017. Crossref