What Is Detection Efficiency in HPGe Detectors?

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SUMMARY

The discussion focuses on detection efficiency in high purity germanium (HPGe) detectors, specifically regarding the percentage of gamma-ray photons detected at specific energies (εγ). Participants clarify that detection efficiency is influenced by the emission probability of gamma-ray energy and its intensity. While the exact formulas or equations for calculating detection efficiency are not provided, it is acknowledged that such methods exist and warrant further exploration.

PREREQUISITES
  • Understanding of gamma-ray detection principles
  • Familiarity with high purity germanium (HPGe) detectors
  • Knowledge of photon emission probabilities
  • Basic grasp of detection efficiency concepts
NEXT STEPS
  • Research formulas for calculating detection efficiency in HPGe detectors
  • Explore the relationship between emission probability and detection efficiency
  • Study the impact of shielding on gamma-ray detection
  • Investigate different types of gamma-ray detectors and their efficiencies
USEFUL FOR

Researchers, physicists, and engineers working with gamma-ray detection systems, particularly those utilizing high purity germanium detectors.

nurul anuar
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hi there!

I am nurul ain,new member here.

I have a question regarding gamma ray detector, the high purity germanium detector or aka HPGe. What is meant by the detection efficiency at specific gamma-ray energy (εγ)? and whether the emission probability of the corresponding gamma-ray energy and the intensities are actually the same thing?

Thank you! Have a nice day!:kiss:
 
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nurul anuar said:
What is meant by the detection efficiency at specific gamma-ray energy (εγ)?

I'd guess that it refers to the percentage of photons at that specific energy that get detected. Since gamma ray photons can penetrate a lot of shielding, I imagine a large portion of them pass through the detectors without being absorbed and detected.
 
I see. You made it clearer now. Thank youu. And is there any ways/formulas/equations that can be used to find the efficiency? Or is it a constant?
 
nurul anuar said:
I see. You made it clearer now. Thank youu. And is there any ways/formulas/equations that can be used to find the efficiency? Or is it a constant?

Oh I'm sure there are. I just have no idea what those might be. :wink:
 
Drakkith said:
Oh I'm sure there are. I just have no idea what those might be. :wink:
Hehe. Guess i have to keep looking then. . Thank youu. Have a nice day!☺️
 

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