DN-12 time-of-flight high-pressure neutron spectrometer for investigation of microsamples

A few years ago a high-pressure neutron spectrometer DN-12 was created at t he IBR-2 pulsed reactor. Neutron diffraction and inelastic incoherent neutr on scattering (with samples having large incoherent neutron scattering cros s section) experiments at pressures up to 5 GPa can be performed with the D N-12 using sapphire anvil cells. After first successful experiments, the de velopment of the DN-12 spectrometer was done during last year. The neu para meters and recent experiments performed with the DN-12 both before and afte r modernization are reviewed. (C) 1999 Published by Elsevier Science B.V. A ll rights reserved.