büt5. Figure below shows the first four peaks of the x-ray diffraction pattern for a typical solid solution, with FCC crystal structure, average atomic weight of 102g/mol and density of 2.84 g/cm3; monochromatic x-radiation having a wavelength of 0.1542 nm was used. (a) For the first peak, determine the approximate atomic radius of atoms in the crystalline structure. (b) Determine the interplanar spacing for each of the peaks. 7000 (111) 6000 5000 (200) 4000 3000 2000 (311) (220) 1000 20 30 40 50 60 70 80 20 (degree) Intensity (CPS)

A mode-locked laser has a linewidth of 100nm at a center wavelength 1050nm. Assume the pulse shape is hyberbolic secant and it is transform limited. What is the pulse width (in fs)? (round all answers to 1 sig. fig. after decimal point)   a.116.0   b.11.6   c.5.8   d.58.0   e.100.0

Potassium iodide has an interplanar spacing of d = 0.296 nm. A monochromatic X-ray beam shows a first-order diffraction maximum when the grazing angle is 7.4°. Calculate the X-ray wavelength ?.? = answer in nm

1) A laser has divergence of 1 milli radians . What is the spatial spread for every meter ? The answer is 1 mm . Please explain how the answer is got 2) You are given a light source of coherence length 3 m . It is split into 2 rays such that the path difference between them is 4 m . Can you form a stable interference ? The answer is No . I just want the reasoning to the answer .