A Precision Method of Generating Circular Cylindrical Surfaces of Large Radius of Curvature for Use in the Curved‐Crystal Spectrometer
作者:
Jesse W. M. DuMond,
David A. Lind,
E. Richard Cohen,
期刊:
Review of Scientific Instruments
(AIP Available online 1947)
卷期:
Volume 18,
issue 9
页码: 617-626
ISSN:0034-6748
年代: 1947
DOI:10.1063/1.1741016
出版商: AIP
数据来源: AIP
摘要:
A method is here described for generating circular cylindrical surfaces of large radius of curvature on blocks of steel or other material with a close approach to optical precision utilizing an ordinary machine shop surface grinder. Convex and concave surfaces about 3×5 inches in dimensions with radii of curvature of 79 inches (two meters) have been ground by this method both on cast iron and on stainless‐steel blocks with a precision of about 0.0002 inches as regards surface imperfections. A very moderate amount of subsequent lapping sufficed to give surfaces of optical precision. The surfaces are used for clamping lamina of crystalline quartz for use in a curved crystal focusing gamma ray spectrometer. A companion paper describes the gamma ray spectrometer.
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