GE 2 Torr and 1 cm Problem
The run was conducted on 5 processors of a Dual Pentium II 400 MHz
cluster using the Parallel version of XPDC1.
The simulation was run for 60 microsecs.
Equilibrium was reached at about 50 microsecs as can be seen from the Number(t)
and Ez(t) diagnostics below. On five Pentium II 400 MHz processors, this
run took about 2 days to reach equilibrium. On eight Dual Pentium
II 400 MHz machines,
the run to equilibrium would take about 5/4 days.
Finally, on eight Dual Pentium III
500 MHz machines the run would take one day.
The simulation starts off with initial Bessel function
electron and ion density profiles with axial density = 3e10/cc.
The initial number of particles was about 200 K.
The following is a link to the input file:
Input File.
INPUTS
Gas is argon with the L&K cross-sectional data.
R=1 cm
Gas temperature = 273 K
Gas pressure = 2 Torr
Gas density = 7.1e16/cc
Axial current = 10 mA
XPDC1 OUTPUT
Ez = 12.2 V/cm
Electron average energy on axis = 5.5 eV
Electron density on axis = 1.5e10/cc
Wall potential = 18 V
