Photon Interactions 137Cs is a common gamma-ray source with photon energy of 662 keV. [3 Marks]...

Question

Question

Photon Interactions

137Cs is a common gamma-ray source with photon energy of 662 keV.

[3 Marks] Calculate the energy of Compton scattered photon at an angle of 120o.
[3 Marks] Calculate the energy difference between the photo-peak and the Compton edge in the response of a scintillator detector in 137Cs spectroscopy.
[4 Marks] What thickness of a lead target is needed to reduce the radiation intensity of 100 keV photons down to 10% of its original intensity? The mass attenuation coefficient of lead is ~5.5 cm2/g. The density of lead is 11.34 g·cm−3.

Answer 1

Answer #1

Answer. ☺ E, =662 KeV, 0 = 120º, Era? now as we know for compton effect. Ep = ho = hc = 12.4 kVA 1 = 12.4 KelÅ ³0.0187 Å 662

Answer 2

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