A Four-Circle Diffractometer for Studies of Phase Transformations

A six-circle diffractometer system for synchrotron X-ray studies of surfaces and thin film growth by molecular beam epitaxy

A new ultrahigh vacuum (UHV) surface diffractometer system equipped with molecular beam epitaxy (MBE) capabilities has been developed. It has a versatile 6-circle configuration for defining the diffraction geometry, and a three-axis translation stage for controlling the sample position. Rugged mechanical components are employed in the design to allow accurate diffraction measurements. Sample co...

A two-circle powder diffractometer for synchrotron radiation on Station 2.3 at the SRS

A versatile high-temperature furnace for neutron four-circle diffractometers

2014 The design and performance of a versatile closed, light (0,9 kg), high temperature furnace adapted to the needs of a neutron four-circle diffractometer is reported. It operates between 330 and 1 200 K with a long term stability of better than 0.05 K. There are few restrictions on the movement of the circles; only the 03A6-range is limited to 200°. The furnace operates under high vacuum (ty...

investigating the feasibility of a proposed model for geometric design of deployable arch structures

deployable scissor type structures are composed of the so-called scissor-like elements (sles), which are connected to each other at an intermediate point through a pivotal connection and allow them to be folded into a compact bundle for storage or transport. several sles are connected to each other in order to form units with regular polygonal plan views. the sides and radii of the polygons are...

A New Form of Diffractometer

A simple diffractometer is described, in which monochromatic light is focused on a pinhole, rendered parallel, and passed through a film of red cells or other objects the size of which is sought. The diffraction patterns are photographed on special plates, and the positions of the first minimum and of the first maximum are subsequently found by the use of a simplified microphotometer. The metho...