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  3. 3. a) draw a schematic diagram of an x-ray diffrac

3. a) Draw a schematic diagram of an X-ray diffractometer. [4 marks] b) The results of an...

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Physics

3. a) Draw a schematic diagram of anX-ray diffractometer. [4 marks]

b) The results of an X-ray diffraction experiment that usedX-rays of wavelength 0.154 nm show the first 6 peaks at angles of40.6°, 58.8°, 73.8°, 87.8°, 101.8°, and 116.4°.

i) Use this information to determinethe possible crystal structures of the sample. [10 marks]

ii) An additional scan was performedon the sample and an additional peak was observed at an angle of133.2°. Determine the crystal structure of the sample. [3marks]

iii) Calculate the Miller indices foreach of the measured peaks. [7 marks]

iv) Draw the orientation of thecrystal plane within the unit cell corresponding to the peak at101.8°. [3 marks]

v) Calculate the lattice constant andidentify the sample. [3 marks]

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