Gamma spectroscopy regarding Cs-137

  1. Hi,

    I was doing a measurement on a Cs-137 source, strong enough so that my detector registers a sum peak.

    I cant get my head around A, the peak at ~80 keV.. I get B (backscatter peak), C(compton edge) and D total abs.peak.

    I tried with a weaker Cs-137 and I saw the 35keV (Ba) but no ~80keV.

    Any ideas?

    Thank you very much!
     

    Attached Files:

  2. jcsd
  3. Vanadium 50

    Vanadium 50 17,442
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    Is your more intense Cs source contained in a lead pig?
     
  4. Yes it is.

    What are you suggesting my friend?
     
  5. Wow.... I Feel real stupid now.
    Its the X-ray from lead (K-shell) that is 88keV.

    Thank you very much!
     
  6. Vanadium 50

    Vanadium 50 17,442
    Staff Emeritus
    Science Advisor
    Gold Member

    I knew you could figure it out with a hint!
     
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