Boson and Fermion Effects in Helium-Helium Scattering
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The scattering of two colliding beams of helium atoms provides a definitive illustration of the influence of quantum statistics on identical particles [1]. Helium has two stable isotopic forms, and , which are nearly identical in chemical and electromagnetic properties. The latter isotope has a natural occurrence of only 0.0002% but can be concentrated for use in experiments.
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Contributed by: S. M. Blinder (August 2022)
Open content licensed under CC BY-NC-SA
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[1] R. P. Feynman, R. B. Leighton and M. Sands, The Feynman Lectures on Physics, Vol. 3. (Jun 15, 2022) www.feynmanlectures.caltech.edu/III_03.html#Ch3-S4.
[2] L. I. Schiff, Quantum Mechanics, 3rd ed., New York: McGraw-Hill, 1968 pp. 138ff.
[3] N. F. Mott and H. S. W. Massey, The Theory of Atomic Collisions, 3rd ed., Oxford: Clarendon Press, 1965 pp. 53–57.
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