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Results tagged with gamma-rays
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user 178739
Electromagnetic radiation with high energies and a typcial wavelength of less than 10 picometers.
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Why Li is not added as contact by ion implantation method in p type HPGe detector? [duplicate]
n+ contact of p type Ge is ~700µm thick compared to p+ contact of n type Ge only ~0.3µm. The process of adding the contact is different. n+ contact Li is added by diffusion process but p+ contact B is …
- 103
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1
answer
41
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Gamma spectrometry: effect on one peak when adding another source
Suppose I have a sample containing only 137Cs.
Now assume it shows 1000 cps counts for 137Cs, 662keV energy.
Now I added 60Co (1173, 1332 keV) source in the same sample. Compton scattering backgro …
- 103
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Why n+ contact of p type Ge is 700um thick compared to p+ contact of n type Ge only 0.3um?
Read the references as suggested....but still not got answer
Li is added by diffusion process but B is added by implantation. In Ion implantation we can achieve thin contact, but in diffusion we can …
- 103
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1
answer
254
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Why n+ contact of p type Ge is 700um thick compared to p+ contact of n type Ge only 0.3um?
Whether the reason is as follows?
Predominantly HPGe is p type. So compensation of large p type impurity requires more n+ contact. (700um)
But n type Ge is made by doping of excess addition of n type …
- 103
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1
answer
126
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In HPGe detector how electron-hole pair remembers energy information of incident gamma?
In the HPGe detector, any gamma energy (> e-h pair production E) shall excite the electron of the valence band and send it to the conduction band. Due to reverse bias, the conduction band e shall be c …
- 103
3
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91
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Probability of photoelectric effect for gamma rays [duplicate]
Why is the probability of the photoelectric effect occurring higher for low energy gamma rays? I'd like a physical answer not just equations.
- 103
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Questions regarding germanium detector
Why n+ contact in n type Ge is not several hundred microns? .
Why we require both additional p or n type contact? in p type Ge, why we require additional p type junction also? crystal itself should …
- 103
6
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Why Compton scattering probability for gamma ray increases and reaches a maxima and finally ...
It is seen from mass attenuation vs energy plot thar compton scattering cross section goes through a maximum. It is low at low energy and high at high energy. Why? I want a non mathematical answer.
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