[FLASH-USERS] problem with laser slab simulation using multi material layers

[Antoine Gintrand]

Dear flash users,

I have a problem and I could not find a way to fix it.

I am doing a simulation based on the Laser slab exemple but this time,
I use a target composed of 3 different layers of materials. The first layer
is Polystyrene. The second is Aluminium. For the last layer, I model a
layer of Silice and I use my own EoS tables to perform the simulation.

The problem comes when I use the EoS of the Silice.

When I use the EoS for Silice, there are some bug at some point with the
error message :

*** Wrote checkpoint file to lasslab_hdf5_chk_0016 ****
 ICI BERCK  Te =    1.0000000000000000       rho =
 3.5539322159115705E-002 pres ele =   22497949.639007464       gamc =
 73.202330248084394
 ICI BERCK  Te =    1.0000000000000000       rho =
 3.5539322159115712E-002 pres ele =   22497949.639007475       gamc =
 3.3365712428190908E-003
 ICI BERCK  Te =    1.0000000000000000       rho =
 3.5539322159115691E-002 pres ele =   22497949.639007449       gamc =
 73.202330248085573

This message comes from the file eos_tabIonmix.F90 when the derivative of
internal energy by temperature det = 0

It seems that the temperature drops to 1K (Te =    1.0000000000000000 ) and
at low temperatures det is equal to zero for Silice.

This is strange because when I plot the electron temperature I can see that
the temperature drops at the interfaces of the different material but It
does not
drop below 80K (see figure attached tele.png)

When I do the simulation again but with an initial temperature of 1eV for
the target
(and not 290 K as I should do) the simulation runs well.

Does anyone have any suggestions to fix this ?

Thank you for the help,

Best regards,

Antoine
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