The structure molecules can be confirmed by using X-ray diffraction analysis, which are explained by Bragg’s Law. The law states that when the x-ray is incident onto a crystal surface, its angle of incidence, will reflect back with a same angle of scattering. A first-order reflection from the {111} planes of a cubic crystal was observed at a glancing angle of 18.9° when Cu(Kα) X-rays of wavelength 179 pm were used. (i) Illustrate clearly the reflection of crystal using Bragg’s Law. (ii) Calculate the unit cell parameters of the crystal. (iii) Calculate the angle at which the same crystal will give a reflection
Compton effect
The incoming photons' energy must be in the range of an X-ray frequency to generate the Compton effect. The electron does not lose enough energy that reduces the wavelength of scattered photons towards the visible spectrum. As a result, with visible lights, the Compton effect is missing.
Recoil Velocity
The amount of backward thrust or force experienced by a person when he/she shoots a gun in the forward direction is called recoil velocity. This phenomenon always follows the law of conservation of linear momentum.
The structure molecules can be confirmed by using X-ray diffraction
analysis, which are explained by Bragg’s Law. The law states that when the
x-ray is incident onto a crystal surface, its angle of incidence, will reflect
back with a same angle of scattering. A first-order reflection from the {111}
planes of a cubic crystal was observed at a glancing angle of 18.9° when
Cu(Kα) X-rays of wavelength 179 pm were used.
(i) Illustrate clearly the reflection of crystal using Bragg’s Law.
(ii) Calculate the unit cell parameters of the crystal.
(iii) Calculate the angle at which the same crystal will give a reflection
from the {123} planes.
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