(a) Show that if the crystal undergoes volume expansion, then the reflected beam is rotated by angle: 80 = —£. tan0.ST, where ß is the volume coefficient of expansion, T is the temperat and the Bragg angle. (b) The Bragg angle for a certain reflection from a powder specimen of Cu is 47.75⁰ a temperature of 293 K and 46.60° at 1273 K. Calculate the coefficient of linear thermal expans: of Cu (Use the angle in radian)
(a) Show that if the crystal undergoes volume expansion, then the reflected beam is rotated by angle: 80 = —£. tan0.ST, where ß is the volume coefficient of expansion, T is the temperat and the Bragg angle. (b) The Bragg angle for a certain reflection from a powder specimen of Cu is 47.75⁰ a temperature of 293 K and 46.60° at 1273 K. Calculate the coefficient of linear thermal expans: of Cu (Use the angle in radian)
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Transcribed Image Text:8) (a) Show that if the crystal undergoes volume expansion, then the reflected beam is rotated by the
angle: 80 =-.tan0.8T, where ß is the volume coefficient of expansion, T is the temperature
and the Bragg angle.
(b) The Bragg angle for a certain reflection from a powder specimen of Cu is 47.75° at a
temperature of 293 K and 46.60° at 1273 K. Calculate the coefficient of linear thermal expansion
of Cu (Use the angle in radian).
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