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Question

I let rays from a point source pass through a cylinder volume, 3mm long, 0.4 mm diameter, the rays exit from the cylinder volume has a multi ring structure. Why?

  • October 20, 2024
  • 3 replies
  • 93 views

Leon

 

3 replies

Leon
  • Author
  • Infrared
  • October 20, 2024

The layout is here

 

 


David
Luminary
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  • Luminary
  • October 20, 2024

Hi Leon,

It appears to be associated with the number of bounces rays make in the pipe. It’s always an integer number. In the attached file I used a Cylinder Pipe and a Source point. I show a detector with the rings you noticed. I also saved two ray files, one with rays which made two bounces, and one with rays which made 6 bounces. The ray files were saved using filter string X_HIT(2,n) where n in the number of bounces. I did not include the ray files in the ZAR because they are huge.

 


Leon
  • Author
  • Infrared
  • October 21, 2024

David: 

Thank you for the reply.