A bent crystal monochromator, for Geiger counter diffractometry, was constructed to monochromate the specimen‐reflected x‐ray beam. This results in very low backgrounds, due to the elimination of fluorescent scattering from the specimen. Adequate resolution and diffracted energy were obtained.

Topics
Geiger counters, Monochromators
1.
J. W.
Dumond
 and
H. A.
Kirkpatrick
,
Rev. Sci. Instr.
1
,
88
(
1930
).
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© 1955 American Institute of Physics.
1955
American Institute of Physics
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