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A simple introduction to Science at ISIS

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1 A simple introduction to Science at ISIS
Robert McGreevy ISIS Facility, CCLRC Rutherford Appleton Laboratory, Chilton, Didcot, OX11 0QX, UK.

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6 To see small things – you need a big thing …

7 What can neutrons and muons do?
’Neutrons (and muons) tell you where atoms are and what atoms do’

8 Diamond Graphite Fullerene

9 Neutron Diffraction

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11 Inelastic Neutron Scattering

12 Momentum – k (velocity) Energy - E Particle
Time of flight method Momentum – k (velocity) Energy - E Particle Wave Wavelength – λ (length scale) 1000 m/s 20 m μs 20 ms 10-10 m

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15 Neutrons see the world in a unique way
… to hydrogenase From hydrogen … Length and time scales 10-11 – 10-6 m – 10-6 s

16 Neutrons see the world in a unique way
… to hydrogenase From hydrogen … Length and time scales 10-11 – 10-6 m – 10-6 s

17 Neutrons see the world in a unique way

18 Neutrons see the world in a unique way
Penetration Large samples, buried interfaces, non-destructive

19 Neutrons see the world in a unique way
Magnetism The neutron has a magnetic moment but no charge

20 = + + Neutrons see the world in a unique way
Sensistivity and selectivity Isotopic substitution/contrast variation

21 Neutrons see the world in a unique way
a(4K) = (2) Å 18th order spherical harmonic c18,1 = ; c18,2 = 0.077 Precision Weak interaction, simple interaction

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23 Crystallography Powder diffraction HRPD POLARIS GEM HiPr (ROTAX) WISH (TS2) Single crystal diffraction SXD Engineering diffraction ENGIN-X

24 Single crystal diffraction - SXD

25 Anticancer drug studied on SXD in 2005
C. K. Broder et al.

26 Anticancer drug studied on SXD in 2005
C. K. Broder et al.


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