X-ray or gamma ray systems or devices – Beam control – Collimator
Patent
1984-03-30
1986-07-22
Fields, Carolyn E.
X-ray or gamma ray systems or devices
Beam control
Collimator
378 80, 378206, G21K 102, G01N 2320
Patent
active
046023771
ABSTRACT:
An adjustable X-ray collimation system for a diamond-anvil high-pressure cell of the type including a cooperable piston and cylinder and a pair of opposing diamonds located between the head of the piston and the head of the cylinder. The X-ray collimation system includes a tubular insert which contains an X-ray collimator. The insert is engageable in the bore of the piston. The collimator is mounted within the insert by means of an elastomeric O-ring at the end closest the opposed diamonds, and by means of a set of adjustable set screws at the opposite end. By adjustment of the set screws the collimator can be pivoted about the O-ring and brought into alignment with the opposed diamonds and the sample contained therein. In the preferred embodiment there is further provided a set of plugs which are insertable in the bore of the collimator. The plugs have bores of different diameters. By successively inserting plugs of progressively smaller bore diameters and adjusting the alignment of the collimator with each plug, the collimator can be quickly brought into accurate alignment with the diamonds. The collimation system allows alignment of the collimator either before or after the cell has been loaded and pressurized.
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Schiferl et al., "Improved X-Ray Collimation System for Diamond-Anvil High-Pressure Cells", Rev. Sci. Instrum., 54 (9), Sep. 1983, pp. 1250-1251.
Bassett et al., "X-Ray Diffraction and Optical Observations on Crystalline Solids Up to 300 Kbar", Rev. Sci. Instrum., 38 (1), Jan. 1967, pp. 37-42.
Livingston Robert W.
Olinger Barton W.
Schiferl David
Eklund William A.
Fields Carolyn E.
Gaetjens Paul D.
Hightower Judson R.
The United States of America as represented by the United States
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