X‐Ray Absorption Coefficients and Geometrical Collimation of the Beam
作者:
L. G. Parratt,
J. O. Porteus,
H. W. Schnopper,
T. Watanabe,
期刊:
Review of Scientific Instruments
(AIP Available online 1959)
卷期:
Volume 30,
issue 5
页码: 344-347
ISSN:0034-6748
年代: 1959
DOI:10.1063/1.1716619
出版商: AIP
数据来源: AIP
摘要:
In recent years, in order to achieve high angular collimation of an intense x‐ray beam in a measurement of an absorption coefficient, most investigators have used the action of a high‐resolving‐power monochromator to provide the collimation. In this case, if the absorber exhibits small‐angle scattering (including multiple scattering) of significant intensity in a scattering cone as large as a few seconds of arc, the value of the coefficient depends upon the absorber position with respect to the monochromator. A few measurements are reported with a two‐crystal spectrometer to illustrate the points discussed.
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