How far does a gamma beam go in the atmosphere?

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The extinction coefficient of gamma rays in the atmosphere varies significantly with energy levels, impacting how far they travel before their intensity diminishes. Higher energy gamma rays, such as 10 MeV, penetrate the atmosphere more effectively than lower energy rays like 1 MeV. The distance at which the intensity of gamma rays reduces to half or to 1/e is crucial for understanding their behavior in atmospheric conditions. Calculations for these distances are essential for applications in radiation detection and safety. Understanding these principles is vital for accurate assessments of gamma ray propagation in the atmosphere.
Gonzolo
Hi, can someone tell me the extinction coefficient of a gamma ray in the atmosphere? How far does a gamma beam go in the atmosphere before its intensity reduces to half or to 1/e?
 
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A long time ago, when I was working, I did calculations like this, but I can't remember the results. However, one thing that is very important is that it the distances you want are very strongly dependent on the gamma ray energy. 10 Mev rays go much further than 1 Mev rays.
 

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