Diffraction by solids, Chemistry

Assignment Help:

DIFFRACTION BY SOLIDS

Diffraction performs when a wave interacts with a lattice whose dimensions are of the same order of magnitude as that of the wavelength of the waves. The lattice scatters the radiation, and the scattered radiation from one point interferes with the radiation from others so as to either reduce it (destructive interference), or enhance the amplitude of the radiation (constructive interference). The pattern of destructive and constructive interference yields information about molecular and crystal structure.

1228_diffraction by solid.png

 

Fig.1. Constructive (a) and destructive (b) interference of two

waves.

In the case of solids, this wavelength must be of the same order as the crystal lattice spacing (ca. 0.1nm), and there are three primary types of radiation which are used for structural studies of solids. The most commonly used radiation, X-rays, have wavelengths of the order of 0.15 nm, and in the course of diffraction studies are scattered by the electron density of the molecule.


Related Discussions:- Diffraction by solids

#titlecarbon, bilogical importance of carbon coumpounds

bilogical importance of carbon coumpounds

Voltametry, write a short note on cyclic voltametry

write a short note on cyclic voltametry

Explain hammonds postulate, Explain Hammonds postulate Because the tran...

Explain Hammonds postulate Because the transition states of the two reactions should resemble the respective carbocation intermediates (Hammond's postulate), study the structur

In the transition of zn atoms, In the transition of Zn  atoms to Zn ++ ion...

In the transition of Zn  atoms to Zn ++ ions there is a decrease in the: (1) Number of valency electrons (2) Atomic weight (3) Atomic number (4) Equivalent weight A

Concentration ore, how is the material extracted from concentrated ore?

how is the material extracted from concentrated ore?

Type of bonding exists, Which type of bonding exists in  Li 2 o   and CaF 2...

Which type of bonding exists in  Li 2 o   and CaF 2    respectively : (1) Ionic, ionic                                   (2) Ionic, covalent    (3) Covalent, ionic

Benzene- hydrocarbon, Benzene- Hydrocarbon Benzene is the first or init...

Benzene- Hydrocarbon Benzene is the first or initial member of arenes. It was first revealed by Faraday in year 1825 from whale oil. Mitscherllich (1833) acquired it by distill

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd