A high-pressure cell for neutron crystal spectrometry

• Three fixed-scattering-angle methods for neutron scattering powder measurements using double- and triple-axis crystal spectrometers were tested: (1) the analyzer-scan method (AS), (2) the monochromator-scan method (MS), and (3) the monochromator-analyzer-scan method (MAS). A high-pressure cell, primarily for use in powder diffraction measurements, with scattering angles of 30o, 60o, 90o and 120o and a sample volume of about 0.8 cm3 was constructed and used in conjunction with the MS and MAS methods. At room temperature, this cell makes it possible to make measurements at pressures up to about 40 kbar and up to about 30 kbar at 300° C. The report includes a description of the diffraction methods and of the high-pressure cell. A few examples of experimental results are also given.

Ämnesord

NATURVETENSKAP  -- Fysik -- Den kondenserade materiens fysik (hsv//swe)

NATURAL SCIENCES  -- Physical Sciences -- Condensed Matter Physics (hsv//eng)

Nyckelord

High pressure

pressure cell

neutron scattering

neutron spectroscopy

powder diffraction

Publikations- och innehållstyp

vet (ämneskategori)

rap (ämneskategori)