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

Lanthanides & acinides, 1. why YbS and YbI2 are semiconducting solids but L...

1. why YbS and YbI2 are semiconducting solids but LaS and LaI2 show metallic character. 2. Why is aqueous solution of Eu2+ thermodynamically less susceptible to oxidation than any

Carbonyl compounds, Which type of compounds give witting reactions

Which type of compounds give witting reactions

Dna nucleotides - biomolecules, DNA nucleotides Adenine ...

DNA nucleotides Adenine + Deoxy ribose sugar + Phosphate → Adenosine phosphate Guanine

Show milk – quality specification, Q. Show Milk – quality specification? ...

Q. Show Milk – quality specification? Milk is a whole, clean, fresh lacteal secretion obtained by complete milking of one or more healthy milch animals. Milking is not done 1

Number of unpaired electrons, Number of unpaired electrons in 1s 2 2s 2 2...

Number of unpaired electrons in 1s 2 2s 2 2p 3    is: (1) 2        (2) 0       (3) 3              (4) 1 Ans: 3

Polarization in a dielectric on application electric field, Polarization in...

Polarization in a dielectric on application of electric field is Displacement/separation of opposite charge centres.

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