# radiusThickness

> Radius thickness of the shape's edge from which to emit particles.

## Definition

* **Type:** Property
* **Namespace:** [UnityEngine](/engine/6000.3/script-reference/unityengine.md)
* **Assembly:** UnityEngine.ParticleSystemModule

```csharp
public float radiusThickness { get; set; }
```

### Remarks

When emitting from the edge of Circles, Cones, and Spheres, you can use this to add a thicker border to the edge where the system emits particles. Additional Resources: [ParticleSystem.ShapeModule.shapeType](/engine/6000.3/script-reference/unityengine/particlesystem/shapemodule/shapetype.md).