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Compton Effect Zoë O’Malley Michael Ross Brandon Bernard
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EM Spectrum A range of electromagnetic frequencies, which include: Infra red Visible Light Ultra violet X-rays
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Photon Also known as a ‘photoelectron’. A quantifiable “EM particle”, described as a “discrete energy packet” by Albert Einstein.
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Compton Effect ‘Photon-electron’ interactions within a mass results in a reduced wavelength (λ) of the photon, as well as the scattering of both the photon and electron. This can also be explained by saying that ‘p-e’ interactions obey the laws of conservation of energy as well as momentum. http://buphy.bu.edu/~duffy/semester2/c35_compton.ht ml
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Conservation of Energy V=ƒλ or C=ƒλ or λ=C/ƒ 1. E T = E‘ T 2. E p + E e¯ = E’ p + E’ e¯ + E r E e¯ ≈ 0 ‘initial energy of e¯ E r ≈ 0 ‘energy required to release e¯ from mass
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Conservation of Energy 3. E p = E’ p + E’ e¯ E p = hƒ ‘h is Plank’s constant, ƒ is frequency 4. hƒ = hƒ’ + E’ e¯ E’ e¯ = ½mv 2 ‘kinetic energy, moving mass 5. hƒ = hƒ’ + ½(m e¯ )(v’ e¯ ) 2
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Conservation of Momentum 1. p = mv p E = mc 2 or m = E/C 2 V p = C 2. p = E/C 2 C 3. P = E/C E = hƒ
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Conservation of Momentum 4. P = ƒh/C V = ƒλ or ƒ = V/λ or ƒ = C/λ 5. P = C/λ h/C 6. P = h/λ 7. h/λ = h/λ’ + M e¯ V e¯ h = 6.6260755 x 10 -34 JS
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Formulas & Constants λ=C/ƒ hƒ = hƒ’ + ½(m e¯ )(v’ e¯ ) 2 h/λ = h/λ’ + M e¯ V e¯ h = 6.6260755 x 10 -34 JS
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Homework Pg. 857 #5-9
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Bibliography Zitsewitz, Paul, Mark Davids, and Robert Neff. Physics. Ontario: Maxwell MacMillan Canada, 1992. Edwards, Lois, et al. Physics. Canada: McGraw-Hill Ryerson, 2003. http://www.launc.tased.edu.au/online/sciences/ physics/compton.html
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