Prevent particles from passing through each other

Dear Community,

I am attempting to use a Particle System to emulate a bunch of coins being dropped from 10 feet up onto a ground, bouncing off a little and finally coming to rest. The idea was to avoid having to animate 50 transforms for my 50 coins and instead using particles.

The coins are correctly dropping and bouncing and coming to rest. However throughout this process they keep passing through each other. That causes a very surrealistic flickering effect. Not what I want. And once they all lie on the ground they keep reordering themselves , which causes the same flickering effect. Is there anything I can do to have particles collide with each other? To not have them flicker around or render within each other? Or do I need to create such an animation quite differently? Maybe even outside of Unity?

Thank you.