Kill or change parameter of particle with collision

Hi Everyone !

I would like to modify the particle's attributs who enter in collision with my object. Not all particles, only those who enter in collision.

I wrote this but this work for ALL the particles, not only the one who enter in collision
(The aim is to kill them but for this script I just tried to change the color)

Code (CSharp):

1. void OnParticleCollision(GameObject other)
2.     {
3.         ParticleSystem.Particle[] particlelist = new ParticleSystem.Particle[Meteorite.particleCount];
4.  
5.         int test = Meteorite.GetParticles(particlelist);
6.  
7.    
8.         for (int i = 0; i < test; i++)
9.         {
10.             if (Atmosphere.color.a > 0.5f)
11.             {
12.                 particlelist[i].color = Color.red;
13.             }
14.         }
15.         Meteorite.SetParticles(particlelist, test);
16.    
17.  
18.     }

If someone can help me that's will be great !!

Thanks