Установите свойства частиц с помощью сценария
//Example to set a Particle Systems Emission Rate over Time.
// Get the emission module.
var emissionModule = GetComponent<ParticleSystem>().emission;
// Enable it (if its not) and set a value
emissionModule.enabled = true;
emissionModule.rateOverTime = 20;
//V Check source for more examples V
B O N K