?X-Ray DiffractionOn a certain crystal, a first-order X-ray diffraction maximum is

Chapter 4, Problem 76

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X-Ray Diffraction

On a certain crystal, a first-order X-ray diffraction maximum is observed at an angle of \(27.1^{\circ}\) relative to its surface, using an X-ray source of unknown wavelength. Additionally, when illuminated with a different, this time of known wavelength 0.137 nm, a second-order maximum is detected at \(37.3^{\circ}\). Determine (a) the spacing between the reflecting planes, and (b) the unknown wavelength.

Text Transcription:

27.1 degrees

37.3 degrees

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