Carefully explain whether or not you would expect to see a reflection at an
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- Potassium chloride is a crystal with lattice spacing of 0.314 nm. The first peak for Bragg diffraction is observed to occur at 12.8°. (a) What energy x rays were diffracted? (b) What other order peaks can be observed (0 ≤ 90°)?At room temperature, the diffractogram of a cubic material with lattice parameter of 10Å presents a peak at 2θ = 20o. At a higher temperature, the lattice parameter has expanded 20%. Calculate the 2q value of the diffraction peak of the material at the high temperature. λλ is fixed. Do not assume a particular (hkl) set of values, nor a value for λ.An electric current through hydrogen gas produces several spectral lines from the transitions to n = 2, called the Balmer series. The four most visible ones are at 410.2 nm, 434.0 nm, 486.1 nm, and 656.3 nm. Assume you are observing these lines with a diffraction grating of 5870 lines per centimeter. a) What is the angle (in degrees) of the second-order maximum for the 410.2 nm line? b) What is the angle (in degress) of the second-order maximum for the 434.0 nm line? c) What is the angle (in degrees) of the second-order maximum for the 486.1 nm line? d) What is the angle (in degrees) of the second-order maximum for the 656.3 nm line?
- The x-ray linear attenuation coefficient of water at 40 keV is ?????? = 0.27 ??−1.The CT number of a tumor reported by a CT scanner is 60 HU. Calculate the linear attenuation coefficient of the tumor tissue ?X-rays of wavelength 0.0628 nm are scattered from a crystal with a grazing angle of 11.3°. Assume m = 1 for this process. Calculate the spacing between the crystal planes. d = nm