On Friday 08 October 2010 09:30:14 am Jatinkumar Rana wrote:
Also, whether the intereference between photo electrons is constructive or destructive, the incident photon will lose its energy once it knocks an electron from say K-shell of absorbing atom and hence photon is said to have absorbed.
I think I answered your second question in my last post. With respect to this question -- the incident photon doesn't "lose energy". The incident photon is destroyed when the photoelectron is created. The kinetic energy of the photoelectron is the energy of the photon in excess of the binding energy. B PS: What I said there wasn't quite correct. There are loss terms in XAS, so there are other places for the energy to go beside the kinetic energy of the photoelectron. But as a launching point, the explanation above will do. -- Bruce Ravel ------------------------------------ bravel@bnl.gov National Institute of Standards and Technology Synchrotron Methods Group at NSLS --- Beamlines U7A, X24A, X23A2 Building 535A Upton NY, 11973 My homepage: http://xafs.org/BruceRavel EXAFS software: http://cars9.uchicago.edu/~ravel/software/exafs/