I guessed it's electron charge, but in my system I have 128 C atoms, each
carbon has 4 electrons so the total charge should be 512 electrons but RHO
file shows 29070.4 . The supercell volume is 8762.95A and its mesh is
150x150x150. I don't know have can I relate these numbers to each other.


Abbas




On Thu, Dec 22, 2011 at 2:19 PM, Scott Beckman <[email protected]> wrote:

>
> I believe that the unit is electron charge.  (I might be wrong, but this
> would make the most sense.)
>
> You can test this by summing all of the charge on the xsf grid.  If it
> adds to an integer and this integer is the number of valence electrons used
> in your calculation then this is the correct unit.
>
>
> On 12/22/11 2:52 PM, Abbas Ebnonnasir wrote:
>
> Dear SIESTA users,
>
> I converted the RHO file (charge densities) to xsf format using the
> rho2xsf code. Now I'm trying to process the xsf file but I don't know what
> is the unit of each number there. Can anybody help me to figure it out
> please?
>
> Thanks
>
> Abbas
>
>

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