Department of Physics and Astronomy

Dartmouth

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Compton Effect

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Spacer Students study the quantum nature of electromagnetic radiation through the observation of the scattering of gamma rays from a lead shield. Specifically, they measure the energy of the scattered photons as a function of scattering angle and they measure the angular distribution of of the scattered photons. Comparisons are made to theoretical predictions. Measurements are made with a NaI detector and a modern pulse height analyzer.

Course Level

Senior

Student Handouts

Equipment

Number of set-ups available: 1

Per lab station:

1 Trump board for PC
1 PC with Maestro software installed
1 printer for PC
1 high voltage DC power supply
1 NaI scintillation counter/photomultiplier tube
1 lead pig
20 lead bricks
1 meterstick
1 Ce-137 sealed source
1 Na-22 sealed source
1 Co-60 sealed source
1 sealed source carrier/padlock
1 lead plate scatterer
1 aluminum plate scatterer
1 cylindrical aluminum scatterer
1 rotating base/pointer to hold scattering plates
1 flat head screwdriver
1 high voltage BNC cable
1 BNC signal cable
film badges (1 per student)
1 "Radiation Materials" sign for each door

Apparatus

Apparatus

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Site contact: largent@Dartmouth.EDU

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