Open n01r opened 7 years ago
This is what will be implemented into the code for now.
can be found in
R.M. More, Pressure Ionization, Resonances, and the Continuity of Bound and Free States, In: D.R. Bates and Benjamin Bederson, Editor(s), Advances in Atomic and Molecular Physics, Academic Press, 1985, Volume 21, Pages 305-356, ISSN 0065-2199, ISBN 9780120038213, http://dx.doi.org/10.1016/S0065-2199(08)60145-1.
(http://www.sciencedirect.com/science/article/pii/S0065219908601451)
In #CRP/picongpu/1703 @ax3l and @psychocoderHPC improved FieldTmp
towards having multiple slots which allows for storage of density and "temperature" data.
The implementation is running with two FieldTmp
slots and shows the expected results when I pass fixed values for "temperature" and density to the particles.
Example:
expected charge state: Nitrogen 4+
checked the HDF5 output:
attribute boundElectrons = 3.0
for all ions.
Success!
Since today the simulation uses calculated and interpolated density and energy density values to calculate a temperature and then the average charge state. Small runtime tests meet the expectation:
expected charge state: Nitrogen 1+
HDF5 output shows boundElectrons = 6.0
Success!
Of course the ionization process is still instantaneous and a cut-off still has to be implemented but we're one step closer to putting certain other codes out of order! :crossed_swords:
Duplicate of #CRP/picongpu/1444 for own documentation.
Reference DOI:10.1016/S0065-2199(08)60145-1
[x] Add new ionization model for Thomas-Fermi
[x] implement formula and fitting parameters
[x] use
FieldTmp
particle density values as input[ ] write "temperature"-functor
[ ] use T-functor as input for the model
[x] test against known theory or expected results
[ ] Update: 2017-01-05 generalize "temperature" solver to account for all ionic species because all positive potential wells count
[ ] Update: 2017-01-10 build a picongpu
ThinFoil
example that features the ThomasFermi model