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Q.

What is compton effect?

Asked by lokesh, 28 Nov '08 07:55 pm
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Answers (6)

1.

Change in wavelength of X rays and other energetic forms of electromagnetic radiation when they collide with electrons. It is a principal way in which radiant energy is absorbed by matter, and is caused by the transfer of energy from photons to electrons. When photons collide with electrons that are free or loosely bound in atoms, they transfer some of their energy and momentum to the electrons, which then recoil. New photons of less energy and momentum, and hence longer wavelength, are produced; these scatter at various angles, depending on the amount of energy lost to the recoiling electrons. The effect demonstrates the nature of the photon as a true particle with both energy and momentum. Its discovery in 1922 by Arthur Compton was essential to establishing the wave-particle duality of electromagnetic radiation.
Answered by Naimisha, 30 Nov '08 12:36 am

 
  
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2.

In physics, Compton scattering or the Compton effect is the decrease in energy (increase in wavelength) of an X-ray or gamma ray photon, when it interacts with matter. Inverse Compton scattering also exists, where the photon gains energy (decreasing in wavelength) upon interaction with matter. The amount the wavelength changes by is called the Compton shift. Although nuclear compton scattering exists[1], Compton scattering usually refers to the interaction involving only the electrons of an atom. The Compton effect was observed by Arthur Holly Compton in 1923 and further verified by his graduate student Y. H. Woo in the years following. Arthur Compton earned the 1927 Nobel Prize in Physics for the discovery.

The effect is important because it demonstrates that light cannot be explained purely as a wave phenomenon. Thomson scattering, the classical theory of an electromagnetic wave scattered by charged particles, cannot explain any shift in wavelength. Light must behave as if it cons ...more
Answered by Naveen Nallusamy, 29 Nov '08 01:32 pm

 
  
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3.

The shift in wavelength upon scattering of light from stationary electrons. The Compton effect, discovered by Compton in 1923, provided the final confirmation of the validity of Planck's quantum hypothesis that electromagnetic radiation came in discrete massless packets (photons) with energy proportional to frequency.
Answered by gkr, 29 Nov '08 04:50 am

 
  
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4.

The Compton effect (also called Compton scattering) is the result of a high-energy photon colliding with a target, which releases loosely bound electrons from the outer shell of the atom or molecule. The scattered radiation experiences a wavelength shift that cannot be explained in terms of classical wave theory, thus lending support to Einstein's photon theory. The effect was first demonstrated in 1923 by Arthur Holly Compton (for which he received a 1927 Nobel Prize).
Answered by iqbal ahmed, 28 Nov '08 10:07 pm

 
  
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5.

An interaction between a photon and an electron, in which the photon scatters off the electron, as in a collision between billiard balls, and comes off with less energy. The effect provides a convincing demonstration of the quantization of light energy.
Answered by Krishnakumar G. Nair, 28 Nov '08 09:50 pm

 
  
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6.

It is the increase in wavelength of electromagnetic radiation especially of an X ray or a Gamma ray photon, scattered by an electron
Answered by thampy chacko, 28 Nov '08 07:58 pm

 
  
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