Positron Annihilation. Proceedings of the Conference held at by A.T. Steward (Eds.)

By A.T. Steward (Eds.)

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Extra info for Positron Annihilation. Proceedings of the Conference held at Wayne State University on July 27–29,1965

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42. , Phys. Rev. 117, 123 (1960). 43. , Phys. Rev. 129, 1622 (1963). 44. Carbotte, J. , and S. Kahana, Phys. Rev. 139, A213 (1965). 45. , and S. H. Vosko, Phys. Rev. 120, 2041 (1960). On the Theory of Positron Annihilation in Metals S. Kahana McGill University, Montreal, Canada What I will discuss here has by now mostly appeared in print. I will be referring mainly to work by Carbotte and myself, 1 because this is the material I know best, but I will make some reference to the work of Bergersen, 2 Majumdar, 3 and Melngailis.

41). Many-Body Effects; Enhancement Finally, let us consider the effect of many-body interactions in the metals. F e r r e l l ' s 2 3 early estimate of the effect of all coulomb interactions was that the electron density at the positron would increase about an order of magnitude over the average density in metals. The momentum distribution of photons emitted by this system — a positron plus an electron cloud—should be quite similar to the free electron distribution but increased a little at momentum near the Fermi momentum.

D. Dissertation, Brandeis University, 1965. , S. DeBenedetti, and R. Smoluchowski, Phys, Rev. 99, 596 (1955). Stewart, A. , J. B. Shand, J. J . Donaghy, and J. H. Kusmiss, Phys. Rev. 128, 118(1962); ibid. 128, 1587 (1961). , Phys. Rev. 128, 2166 (1962). Luttinger, J. , "The Fermi Surface," Wiley, New York and London, 1960. F e r r e l l , R. , Rev. Mod. Phys. 28, 308 (1956). , and S. H. Vosko, Phys. Rev. 120, 2041 (1960). , Proc. Roy. Soc. (London) A243, 336 (1958). , and J. S. Plaskett, Phys. Rev.

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