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"Nothing in life is to be feared, it is only to be understood." ..."Marie Curie 1867-1934, Polish born French Physicist, Twice Nobel Prize Winner- Physics and Chemistry)"
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Author Topic: Bragg's Law and Diffraction  (Read 9951 times)
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ahmedelshfie
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on: April 09, 2010, 07:00:55 pm » posted from:,,Brazil

This applet created by Prof Hwang
Modified Interface by my self
Original simulation:Bragg's Law and Diffraction

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* Bragg's.jpg (35.27 KB, 747x407 - viewed 678 times.)

* Bragg's Law and Diffraction.jpg (82.58 KB, 720x418 - viewed 3060 times.)
« Last Edit: April 14, 2010, 01:41:26 am by ahmedelshfie » Logged
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Reply #1 on: June 26, 2010, 12:41:53 am » posted from:SAO PAULO,SAO PAULO,BRAZIL

Bragg diffraction (also referred to as the Bragg formulation of X-ray diffraction) was first proposed by William Lawrence Bragg and William Henry Bragg in 1913 in response to their discovery that crystalline solids produced surprising patterns of reflected X-rays (in contrast to that of, say, a liquid). They found that in these crystals, for certain specific wavelengths and incident angles, intense peaks of reflected radiation (known as Bragg peaks) were produced. The concept of Bragg diffraction applies equally to neutron diffraction and electron diffraction processes.
W. L. Bragg explained this result by modeling the crystal as a set of discrete parallel planes separated by a constant parameter d. It was proposed that the incident X-ray radiation would produce a Bragg peak if their reflections off the various planes interfered constructively.


* 220px-BraggPlaneDiffraction.svg.png (3.83 KB, 220x103 - viewed 478 times.)
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"Nothing in life is to be feared, it is only to be understood." ..."Marie Curie 1867-1934, Polish born French Physicist, Twice Nobel Prize Winner- Physics and Chemistry)"
 
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