Dear all,
Hi, I’m Xingye.
Recently, I’m doing sputtering simulation. I want to use the fix deposit target command. Yet, there is something I cannot understand.
First, how should I set up the initial position of the inserted atoms?
Second, how should I set up the initial velocity of the inserted atoms including speed and direction?
Third, do all the inserted atoms come from the target point? Does it mean the target point is the initial position of the inserted atoms?
Thank you so much!
Best,
Xingye
Dear all,
Hi, I’m Xingye.
Recently, I’m doing sputtering simulation. I want to use the fix deposit
target command. Yet, there is something I cannot understand.
First, how should I set up the initial position of the inserted atoms?
you probably want to use the region option to define a zone
where the particles are inserted into the simulation box.
fix deposit will choose a suitable random location in that space.
Second, how should I set up the initial velocity of the inserted atoms
including speed and direction?
you give it a range using the vx, vy, vz options. typically one of them
is sufficient. unless the range is zero (all insertions at the same velocity),
the fix will choose a velocity in that range at random.
direction is given by the target point. i.e. first a velocity is
assigned, but then changed to that it would go from the
insertion point to through the target point.
Third, do all the inserted atoms come from the target point? Does it mean
no. on the contrary. all atoms are *aimed* at the target point.
the target point is the initial position of the inserted atoms?
of course not. please read the documentation and don't guess.
the documentation spells this all out in detail.
axel.