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Monochromatic high energy x-rays are incident on a crystal. If 1st order reflection is observed at an angle 3.4°, at what angle would 2nd order reflection be expected.
written 4.5 years ago by gravatar for teamques10 teamques10 ★ 70k •   modified 4.5 years ago
wave theory propagation
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written 4.5 years ago by gravatar for teamques10 teamques10 ★ 70k

Given,

For first order reflection, 

$Ø_1 = 3.4°$

To find, 

$Ø_2 = ??$

Sice it is the same monochromatic x-ray, values of d(interstitial distance) and L(here lambda)

Using Bragg's Law,  $2d\sin\phi = nL $

For first order reflection,

$2d\sin(3.4) = (1)L $......(1)

For second order reflection,

$2d\sinØ_2 = (2)L $ …

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