The crystal analyser spectrometer PRISMA has proven to be particularly successful at surveying extended areas of (kappa,epsilon) space, efficiently collecting high-quality inelastic and critical scattering data sets from single-crystal samples. In the inelastic mode, mechanical constraints upon the 16 analyser-detector arms limit the final energy to E-f > 12 meV. To overcome this constraint, a novel double-crystal analyser system has recently been installed on the PRISMA spectrometer. Neutrons scattered from the sample are analysed by five groups of paired pyrolytic graphite analysers allowing final energies 2.25 meV < E-f < 14 meV to be easily obtained, enabling measurements at low kappa to be made with good resolution.
A novel double-crystal analyser system for the PRISMA spectrometer at ISIS
PETRILLO, Caterina;SACCHETTI, Francesco
1997
Abstract
The crystal analyser spectrometer PRISMA has proven to be particularly successful at surveying extended areas of (kappa,epsilon) space, efficiently collecting high-quality inelastic and critical scattering data sets from single-crystal samples. In the inelastic mode, mechanical constraints upon the 16 analyser-detector arms limit the final energy to E-f > 12 meV. To overcome this constraint, a novel double-crystal analyser system has recently been installed on the PRISMA spectrometer. Neutrons scattered from the sample are analysed by five groups of paired pyrolytic graphite analysers allowing final energies 2.25 meV < E-f < 14 meV to be easily obtained, enabling measurements at low kappa to be made with good resolution.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
