A percentage can be constituted-of-or-filled-with particles.
The atmosphere of a planet may contain a deal of (dust particles).
A deal can be constituted-of-or-filled-with (dust particles).
A phase of commissioning a (particle accelerator) may reach a conclusion.
A (particle collider) may malfunction within hours of a launch.
A beam can be constituted-of-or-filled-with charged particles.