[Pw_forum] how to specify initial ion velocities in pw.x

[German Samolyuk]

Thank you,

does it mean that if I add
after line number 466 of dynamics_module.f90
something like

tau_old(1,100) = tau(1,100) - v_x*dt/alat
tau_old(2,100) = tau(2,100) - v_y*dt/alat
tau_old(3,100) = tau(3,100) - v_z*dt/alat

it should be equivalent to set up initial velocity (v_x,v_y,v_z) to
particle number 100?

What units is used for dt? Is it atomic Hartree or atomic Rydberg?
>From the text it looks like atomic Rydberg.

German

ORNL



On Fri, Dec 4, 2009 at 4:26 AM, Paolo Giannozzi <giannozz at democritos.it> wrote:
> German Samolyuk wrote:
>
>> I'm little bit confused by comment
>> "notice that vel is not the real velocity" in the subroutine.
>
> I think it is just a reminder that "vel" is not the velocity
> but the velocity times Delta T
>
> P.
> --
> Paolo Giannozzi, Democritos and University of Udine, Italy
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