Scientific software description
The package is intended for complex chemical or plasma-chemical non-stationary kinetics simulation. An arbitrary mixture of up to 30 individual reagents and up to 300 specific reactions of any type ( collisional, radiative, etc. ) could be taken into account using only 128 KB of the PC addressed memory.
Lists of considered components and reactions are determined by two external text-files, prepared by the user in ordinary way. This allows him to investigate an influence of any component or reaction upon whole process course by means of a simple turning it on/off.
During file input / recognition procedure the component and reaction lists are carefully checked to avoid any probable mistake, which may appear in large data banks. A population kinetics equation system, recovered from the input text files information, is solved by the special extremely quick calculation method.
In general, the package is intended for the non-stationary plasma chemical kinetics tasks with the great influence of electron - atomic collisions. That's why electron and atom temperatures time dependencies, caused by external force and/or defined from reaction heating, are taken into account.
Moreover, there is a special advanced package - "NIKIN-B" - intended, in addition to above, for simultaneous calculation of the real electron energy distribution function to take into account its effect upon electron impact rate coefficients. For this purpose the non-stationary Boltzmann equation is numerically solved (see DISTREL package description).
These packages can be easily adapted for wide range of tasks concerning plasma chemical or common chemical reactions non-stationary kinetics.
In a demo program the
beam / discharge - pumped KrF* excimer laser kinetics is examined with
more than 20 plasma components and 120 various plasma processes included
into a physical model. A typical laser pulse simulation takes about
1 second with IBM PC /486.
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