How can I instantiate an explosion using Raycasting?

I'm trying to have an explosion play when the ray collides with the model. As of now the object destroys but I have no idea how to actually make an explosion appear where that specific object was.

Here is my script:

using UnityEngine; using System.Collections;

 public class touch2 : MonoBehaviour {
     public GameObject Tower;
     public GameObject Poof;
     
     private Ray ray; // cast array
     public RaycastHit rayHitInfo = new RaycastHit(); // object that was hit by array
     // Update is called once per frame
     void Update () {
         
         if (Input.touches.Length <= 0) 
         {
             //if no touch recognised then there will be no interaction
         } 
         else 
         {
             for (int i = 0; i < Input.touchCount; i++)
             {
                 if(Input.GetTouch(i).phase == TouchPhase.Began)
                 {
                     ray = Camera.main.ScreenPointToRay (Input.GetTouch(i).position); // creates ray from screen point positoin
                     if(Physics.Raycast(ray, out rayHitInfo))
                     {
                         Destroy (rayHitInfo.transform.gameObject);
                         
                         
                     }
                     
                 
                 }
             }
         }
     }
 }