What Is Detection Efficiency in HPGe Detectors?

[nurul anuar]

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!

 

[Drakkith]

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.

 

[nurul anuar]

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?

 

[Drakkith]

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.

 

[nurul anuar]

Oh I'm sure there are. I just have no idea what those might be.

Hehe. Guess i have to keep looking then. . Thank youu. Have a nice day!