- #1
patric44
- 303
- 39
- Homework Statement
- how does the single channel analyzer work in the gamma spectrometer ?
- Relevant Equations
- no equations
hi guys
i am kinda have a vogue understanding of the working principle of the gamma spectrometer and have some questions
1 - i need some one to verify my interpretation of the working principle : the sodium iodide crystal emits photons of visible light the intensity of these photons is related to the energy of gamma radiation → these photos is turned into an electrical signal with a certain pulse height by the Photo Multiplier tube → by using a single channel analyzer with a specific window width we are able to count exactly the number of pulses within an interval ##ΔV## apart , a histogram of the number of pulses with their height is plotted indicating the different peaks .
is that right ?
2 - our professor stated that increasing the gain of the linear amplifier stage to high value will reduce the resolution of the produced peaks in the sense that it will make the pulse width wider ? i don't understand why is that ?!
i am kinda have a vogue understanding of the working principle of the gamma spectrometer and have some questions
1 - i need some one to verify my interpretation of the working principle : the sodium iodide crystal emits photons of visible light the intensity of these photons is related to the energy of gamma radiation → these photos is turned into an electrical signal with a certain pulse height by the Photo Multiplier tube → by using a single channel analyzer with a specific window width we are able to count exactly the number of pulses within an interval ##ΔV## apart , a histogram of the number of pulses with their height is plotted indicating the different peaks .
is that right ?
2 - our professor stated that increasing the gain of the linear amplifier stage to high value will reduce the resolution of the produced peaks in the sense that it will make the pulse width wider ? i don't understand why is that ?!