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X-rays of wavelength ? = 0.140 nm are scattered from carbon. Part A What is the

ID: 1305465 • Letter: X

Question

X-rays of wavelength ? = 0.140 nm are scattered from carbon.

Part A

What is the Compton wavelength shift for photons detected at angle (relative to the incident beam) of exactly 30.0??

Express your answer to three significant figures and include the appropriate units.

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Part B

What is the Compton wavelength shift for photons detected at angle (relative to the incident beam) of exactly 120??

Express your answer to three significant figures and include the appropriate units.

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Part C

What is the Compton wavelength shift for photons detected at angle (relative to the incident beam) of exactly 180??

Express your answer to three significant figures and include the appropriate units.

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???? =

Explanation / Answer

???? = (h/mc)(1-costhetha)

a) 2.43 x10^-12 ( 1-cos30) = 3.26 x 10^-13 m

b) 2.43 x10^-12 ( 1-cos120) = 3.65 x 10^-12 m

c) 2.43 x10^-12 ( 1-cos180) = 4.86 x 10^-12 m