Neutron diffraction spectrometer, 1945

Neutron diffraction spectrometer, 1945

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Caption: Neutron diffraction spectrometer. This is the spectrometer which was first used at Ryerson Laboratory, at the University of Chicago, USA, in the scattering of X-rays by gases for free atom form factor determinations. In 1944 it was taken to Oak Ridge and set up at the face of the Graphite Reactor. There, it was used in 1945 by US physicist Ernest Omar Wollan (1902-1984) to develop the techniques of neutron diffraction spectroscopy. This technique is used to determine the structure of materials in a similar way to X-ray diffraction. Wollan died before the 1994 Nobel Prize in Physics was awarded for this work.Restrictions:

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