X-ray analysis apparatus including a monochromator crystal havin

Details X-ray analysis apparatus including a monochromator crystal havin X-ray analysis apparatus including a monochromator crystal havin

1984-06-22

1987-03-10

Howell, Janice A.

X-ray or gamma ray systems or devices

Specific application

Diffraction, reflection, or scattering analysis

378 85, H03D 322

Patent

active

046495576

ABSTRACT:
A monochromator in an X-ray analysis apparatus involves a crystal having spherically curved crystal lattice surfaces with the boundary surface of the crystal having a radius of curvature R in a first principal direction and a radius of curvature 2R in a second principal direction. The second principal direction is transverse with respect to the first principal direction. A high radiation efficiency is obtained by constructing an entrance slit and an exit slit for X-rays to conform to curved circles of latitude on a Rowland sphere applicable to the monochromator crystal.

REFERENCES:
patent: 2853617 (1958-09-01), Berreman
patent: 3439163 (1969-04-01), De Jongh
patent: 3639759 (1972-02-01), Goshi et al.
patent: 4078175 (1978-03-01), Fletcher et al.
patent: 4203034 (1980-05-01), Carroll, Jr.
patent: 4322618 (1982-03-01), Jenkins
patent: 4461018 (1984-07-01), Ice et al.

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