A Method of Monochromatization and Precise Point Focusing of X-Rays and its Application in Low Angle Diffraction Studies

Author: Berreman, Dwight Winton

Year: 1955

Degree: Dissertation (Ph.D.)

Advisor: DuMond, Jesse William Monroe

Committee Member: Unknown, Unknown

Option: Physics; Mathematics

Abstract

A principle for bending crystals with a minimum of strain so that they will focus x-rays and γ-rays accurately to a point is explained.

Detailed calculations are made of the aberrations in the foci resulting from various applications of the principle.

The application of the principle in making a point focusing monochromator for low angle x-ray diffraction studies is discussed, and theoretical and experimental determinations of the reflection coefficient of the crystal are compared.

A few experiments in low angle diffraction from biological materials using the new monochromator are described, and the results are compared with those obtained using other instruments.

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