Static particles freak out after certain amount of time? Ok, I have been trying to maintain "static" particles, meaning they stay the same count and just vibrate in place (like atoms) - like this https://dribbble.com/shots/4936693-VR-Birds

I have achieved this by just having start and end frame be same -



My problem is clearly Im doing something wrong because maybe 5 seconds after the start/end frame, the particles freak out and move really fast away from the desired volume:



(where before they were in that box by the cursor)
How can I stop them from exploding? Is it something with the lifetime?

EDIT:


2:
Additionally (re-editing my last answer)
I am attaching a blend file in which I noticed that I had to use Brownian Force and Damp instead of Turbulence or any other kind of field.



This should do the work.

Blender File

In order to keep the particles still you must turn off the Normal property in the Emiter Geometry under the tab Velocity of your Particles System.



The second thing that you have to do, so your particles will not go towards the "ground plane" is to turn off the Gravity affection in the "Field Weights" Tab.
From this panel you will also set the desired affection from other fields (such as Turbulence, Wind, Vortex etc) that you may use to give to your particles the kind of movement you are looking for.