X-ray or gamma ray systems or devices – Specific application – Diffraction – reflection – or scattering analysis
Patent
1996-02-26
1997-03-25
Wong, Don
X-ray or gamma ray systems or devices
Specific application
Diffraction, reflection, or scattering analysis
378 85, 359845, 359859, G21K 106
Patent
active
056152450
ABSTRACT:
A monochromator for radiant X-rays is composed of a first crystal which has a first surface of incidence having a concave letter V-shaped groove and cooling means for flowing a cooling material behind the first surface of incidence along the letter V-shaped groove, and a second crystal which has a second surface of incidence having a letter V-shaped convex. A parallel pencil of X-rays which impinges on the first surface of incidence elongates to a half-ellipse on the first surface of incidence and reflects in parallel therefrom to the second surface of incidence. Then, a pencil of emissive X-rays having the same size as the initial parallel pencil of X-rays exits the second surface of incidence to become useful light. The monochromator for radiant X-rays which has a high cooling efficiency, is easy to adjust, provides a pencil of emissive X-rays stably and highly accurately. The monochromator is easy to use and economical, and allows easy maintenance.
REFERENCES:
patent: 5004319 (1991-04-01), Smither
patent: 5287395 (1994-02-01), Khounsary
patent: 5485497 (1996-01-01), Oizumi et al.
Japan Atomic Energy Research Institute
Wong Don
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