the question of velocity gaussian distribution in specific range of angles

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1

Dear all,

I have a question about the initial the velocity with gaussian distribution, I know that there is the command of “velocity all create 300.0 1324154 dist gaussian”, but the command is about the 0~180 degree in the x y z axises,
As for me, I want to restrict the velocity in z axis 0~90 degree, is some command can do it?

Thanks a lot!

Lu Xie

2

Dear all,

I have a question about the initial the velocity with gaussian distribution,
I know that there is the command of "velocity all create 300.0 1324154
dist gaussian", but the command is about the 0~180 degree in the x y z
axises,
As for me, I want to restrict the velocity in z axis 0~90 degree, is some
command can do it?

you'll have to explain in more detail what you mean by this,
perhaps give an example. it don't get what you are asking.

cheers,
    axel.

3

I'll just note that you can input per-atom velocities
in a data file, so if LAMMPS doesn't do what you
want, create the velocity distribution yourself and
just input it.

Steve

4

Thanks so much! That's a good method, I'll do it.
For me, I want to deposit platinum atoms on Carbon based substrate, the initial velocity of the depositing atom should be
negative and chosen randomly. so I want to restrict the velocity in z axis 0~90° with gaussian distribution.

Thanks a lot again!

Lu Xie