PLASMAKIN Manual
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PLASMAKIN_DATA

Name

PLASMAKIN_DATA -- Holds initial values of data applying to the entire system

Syntax

&PLASMAKIN_DATA [Cte_p = Lvalue [,]]
{ pressure = Rvalue [, 'Cvalue'] [,] gas_T = Rvalue [,'Cvalue'] | [,] gas_n = Rvalue [, 'Cvalue']} [ [,] electron_T = Rvalue [, 'Cvalue'] ] /

NameDescriptionData type and attributesDefault valueUnits or values supported
Cte_pConstant pressure systemLOGICAL.TRUE..T, T, .t, t, .F, F, .f, f
PressureTotal pressurePHYS_PROPERTY0,'Pa''Pa', 'Nm-2', 'bar', 'mbar', 'torr', 'atm'
Gas_TGas temperaturePHYS_PROPERTY300,'K''K', 'C'
Gas_nTotal gas densityPHYS_PROPERTY0,'m-3''m-3', 'cm-3'
electron_TElectron temperaturePHYS_PROPERTY0,'eV''eV', 'K', 'C'

Comments

This NAMELIST is usually used only once in the data input file. The Cte_p value is used to distinguish between constant pressure and constant volume conditions. The initial gas density can be indicated explicitly - specifying its value - or implicitly indicating the pressure and gas temperature. However even in the later case the user can be interested in indicate the gas density units if he prefers to use 'cm-3' instead of the default S.I. value. The electron temperature is only necessary if electron temperature dependent rate coefficients are used. Note that °C is just written C.

Examples

Example E-21. PLASMAKIN_DATA: Examples of PLASMAKIN_DATA NAMELIST syntax.

  &PLASMAKIN_DATA Gas_n = 1.e+22 /                                        (1)

  &PLASMAKIN_DATA                                                         (2)
    Gas_n    =   ,'cm-3'
    Pressure =  1,'mbar'
    Gas_T    = 25,'C'
  /

  &PLASMAKIN_DATA Cte_p = F, Pressure = 1,'torr', electron_T = 3,'eV' /   (3)
(1)
Explicit indication of gas density using the default units (m-3). Gas temperature has also the default value (300 K).
(2)
The density is calculated by PLASMAKIN from the pressure and temperature values but the value of the total density passed to the calling program is in cm -3.
(3)
Constant volume conditions. Electron rate coefficients are evaluated with an initial electron temperature of 3 eV.

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