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There’s no such thing as a bad neutron!. Bill David ISIS Facility, Rutherford Appleton Laboratory & Inorganic Chemistry Laboratory, University of Oxford, UK. To begin at my beginning ... ILL (1977). D1a 1977: WIFD with Alan Hewat and Mike Glazer. AWH. vague memories ... SNS(ISIS) 1984.
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There’s no such thing as a bad neutron! Bill David ISIS Facility, Rutherford Appleton Laboratory & Inorganic Chemistry Laboratory, University of Oxford, UK Alan Hewat Colloquium “A Life of Refinement – 50 years of Neutron Scattering” InstitutLaue Langevin, 26 October 2012
To begin at my beginning ... ILL (1977) D1a 1977: WIFD with Alan Hewat and Mike Glazer AWH
vague memories ... SNS(ISIS) 1984 HRPD “Day One” SNS (ISIS) 7.16p.m.16th December 1984 http://hewat.net/science/instruments/HRPD-ISIS-Fender-Hewat-Jan-1978.pdf
There’s no such thing as a bad neutron ... March / April 1987 NATO Advanced Study Institute on Chemical Crystallography with Pulsed Neutrons and Synchrotron X-Rays, (March 17-21,1987, Alvor, Portugal – organised by Maria Armenia Carrondo and George A. Jeffrey)
There’s no such thing as a bad neutron ... • Jim Jorgensen • Argonne National Laboratory
There’s no such thing as a bad neutron ... ... but the real winner was powder diffraction – and neutron powder diffraction – in particular temperature Dr. Hugo M. Rietveld receiving the Aminoff prize from King Carl Gustaf of Sweden in Stockholm 31 March 1995 2 theta
Flying the flag for powders ... + +...+ + = 6,1 10,1 18,1 18,2 “powder diffraction - if you’ve seen one you’ve seen them all” unattributable! the collapse of three dimensions of reciprocal space on to the one dimension of a powder diffraction pattern the collapse of a three dimensional reciprocal-space grid on to the one dimension of a powder diffraction pattern • "I don't believe a tree is a tree and if you've seen one you've seen them all." • Governor Ronald Reagan, in the Sacramento Bee, September 14, 1966 C60 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 d (Å) $ minor “hexagon” orientation has been discovered to show positional disorder 0.30 0.40 0.50 0.60 d (Å) J. Phys. Condensed Matter 4 6087-94 (1992) Nature353 147-9 (1991); Proc. Roy. Soc. Lond. 442 129-46 (1993) http://hewat.net/science/ill-hewat.html
Flying the flag for powders ... Single crystal C60 (SXD, ISIS) Wright, McLaughin & Attfield, J. Chem. Soc., Dalton Trans., 3663-8 (2000) McIntyre, Lemee-Cailleau &Wilkinson (ViVALDI, ILL) Physica B 385-6 1055-8 (2006) Rodriguez-Carvajal, Gonzalez-Calbet, Grenier, Pannetier & Anne Solid State Commun. 62 231-4 (1987)
From one dimension to four ... the future of structural science? SYNTHESIS/PROCESSING DIFFRACTION/SPECTROSCOPY/ THERMODYNAMIC CHARACTERISATION DFT/MD MODELLING ATOMIC UNDERSTANDING OF MECHANISMS PROPERTY CALCULATION PROPERTY MEASUREMENT EXPERIMENT BENCHMARKING CALCULATION INTERPRETATION
From one dimension to four ... the future of structural science? LiBH4 : superionic conductor Li B 7Li11BD4 : GEM (ISIS) LiBH4 : DFT-MD PRL 108 095901 (2012) Hydrogen MODF in BH4 (DFT MD) Hydrogen MODF in BH4 (DFT MD) (ℓ = 5 spherical harmonic fit) Hydrogen MODF in BH4 (neutron powder diffraction)(ℓ = 5 spherical harmonic fit)