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The equilibrium process of plasma nitrogen species by chemical kinetic reactions along various pressures is successfully investigated. The equilibrium process is required in industrial application to obtain the stable condition when heating up the material for having homogenous reaction. Nitrogen species densities is modeled by a continuity equation and extended Arrhenius form. These equations are used to integrate the change of density over the time. The integration is to acquire density and the reaction rate of each reaction where temperature and time dependence are imposed. A comparison is made with global model within pressure range of 1- 100mTorr and the temperature of electron is set to be higher than other nitrogen species. The results shows that the chemical kinetic model only agrees for high pressure because of no power imposed; while the global model considers the external power along the pressure range then the electron and nitrogen species give highly quantity densities by factor of 3 to 5., {"references":["S. E. Babayan, G. Ding and R. F. Hicks, \"Determination of the nitrogen\natom density in the afterglow of a nitrogen and helium, nonequilibrium,\natmospheric pressure plasma,\" Plasma Chemistry and Plasma\nProcessing, 21(4)(2001) 505-521","J. Park, I. Henins, H. W. Herrmann, and G. S. Selwyn, \"An atmospheric\npressure plasma source,\" Appl. Phys. Lett., 76(3)(2000) 288-290","L. Yu, Laurent Pierrot, Christophe O. Laux, Charles H. Kruger, \"Effects\nof vibrational nonequilibrium on the chemistry of two-temperature\nnitrogen plasmas, Plasma Chemistry and Plasma Processing,\n21(4)(2001) 483-503","Toshiki Nakano, \"Some recent topics of non-equilibrium discharge\nplasma technologies, IEEE Trans. on Dielectrics and Electrical\nInsulation, 14(5)(2007)1081-1087","K.H Becker, U. Kogelschatz, K.H Schoenbach, R.J Barker, \"Nonequilibrium\nair plasmas at atmospheric pressure, IoP Publishing, 2004,\npage 125-126.","E. G. Thorsteinsson and J. T. Gudmundsson, A global (volume\naveraged) model of the nitrogen discharge: I. Steady State, Plasma\nSources Science and Technology, 18 (4) (2009) 045001","J Hugill, T Saktioto, A simplified chemical kinetic model for slightly\nionized, atmospheric pressure nitrogen plasmas, Plasma Sources Science\nand Technology, 10 (38) (2001) 38-42","Saktioto, A thermodynamic equilibrium of nitrogen plasma species at\natmospheric pressure: An application for afterglow, Kontribusi Fisika\nIndonesia, 13(2)(2002) 104-107","IUPAC Compendium of Chemical Terminology, 2nd Edition (1997).\n[10] E.G Thorsteinsson, The Nitrogen Discharge. A Global (volume\naveraged) Model Study, Electrical and Computer Engineering,\nUniversity of Iceland, October 2008.\n[11] N St J Braithwaite, \"Introduction to gas discharges\", Plasma Sources\nSci. Technol. 9 (2000) 517-527\n[12] C. H. Kruger, Christophe O. Laux, Lan Yu, Denis M. Packan, Laurent\nPierrot \"Nonequilibrium discharges in air and nitrogen plasmas at\natmospheric pressure,\" Pure Applied Chemical., 74(3)(2002)337-347."]}