The delta-diffractometer – a new type of four-circle diffractometer

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...

A surveying optical diffractometer.

I N T R O D U C T I O N Optical diffraction and filtering of electron micrographs offers an objective method for analysing periodic structures. Because the preservation of detail in electron micrographs usually is not perfect, many micrographs must be examined and assessed to identify images suitable for analysis. I t is useful to have an instrument that allows one to survey many dozens of elec...

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

Texture analysis with the new HIPPO TOF diffractometer

The new neutron time-of-flight (TOF) diffractometer HIPPO (High-Pressure-Preferred Orientation) at LANSCE (Los Alamos Neutron Science Center) is described and results for quantitative texture analysis of a standard sample are discussed. HIPPO overcomes the problem of weak neutron scattering intensities by taking advantage of the improved source at LANSCE, a short flight path (9m) and a novel th...

The light microscope as an optical diffractometer.

The analysis of electron micrographs by optical diffraction was introduced recently by Klug & Berger (1964). Their experiments were conducted with a special diffractometer designed for use with diffracting masks up to several inches in diameter. A method is described here for using a conventional light microscope as an optical diffractometer which can accept masks up to 5 mm in diameter. A 100-...