Neutron Diffraction

J. Kulda	Survey of Neutron Scattering Opportunities in Europe	A
P. Mikula, J. Šaroun, M. Vrána, P. Lukáš, V. Wagner	Focusing Techniques for High-Resolution Neutron Powder Diffractometry: Bragg Diffraction Angle-Analysis Method	A
R. Caciuffo	Inelastic Neutron Scattering Studies of Tunnelling Processes in Molecular Crystals	A
V.L. Aksenov, A.M. Balagurov, V.P. Glazkov, D.P. Kozlenko, B.N. Savenko, D.V. Sheptyakov, V.A. Somenkov	Time of Flight Neutron Diffractometer for Investigation of Microsamples under High External Pressure	A
D.A.A. Myles, F. Cipriani, J.C. Castagna, C. Wilkinson	LADI- a new facility for neutron protein crystallography	A

Being a minority presence at ECM, the speakers for the neutron scattering microsymposium were selected to illustrate the breadth of the method for structural studies. In line with the message of Hans Bürgi's plenary lecture, neutrons provide access not only to where atoms are but also to what they do: dynamics as well as statics. Jiri Kulda (ILL) reviewed the research opportunities in neutron scattering in Europe centred on the two world leading sources at ILL Grenoble and ISIS Oxford, supported by a network of national sources such as Orphay, Risó, HMI Berlin and IBR Dubna. The curious researcher need look no further than the European Neutron Scattering Association web-site at http://www.psi.ch/ensa for further information. Roberto Caciuffo (Ancona) gave a beautifully presented review talk on dynamical studies of microelectron volt excitations in calixarene inclusion compounds and molecular iron clusters where the sensitivity of the neutron as a probe of hydrogen motions on the one hand and magnetic excitations on the other was demonstrated with stunning spectra. There were three contributed talks. Pavel Mikula (Rez) showed how composite curved monochromators of perfect crystals could outperform graphite - important in an intensity limited technique. Boris Savenko (Dubna) demonstrated the value of the penetrability of the neutron in his study of mercury superconductors at pressures up to 5GPa and Dean Myles (EMBL, Grenoble) gave a view into the future with his data on protein crystallography using neutron sensitive image plates and the quasi-Laue technique. The morning was rounded off appropriately with a group photograph which some participants, in their eagerness to bag their lunch place managed to avoid!