A Precision Method of Generating Circular Cylindrical Surfaces of Large Radius of Curvature for Use in the Curved-Crystal Spectrometer
Abstract
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.
Additional Information
© 1947 American Institute of Physics. Received October 9, 1946. This research is now being conducted under Navy Contract N6onr-244 Task Order IV, dated March 1, 1947.Attached Files
Published - 1.1741016.pdf
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Additional details
- Eprint ID
- 46466
- Resolver ID
- CaltechAUTHORS:20140624-101434316
- N6onr-244
- Office of Naval Research (ONR)
- Created
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2014-06-24Created from EPrint's datestamp field
- Updated
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2021-11-10Created from EPrint's last_modified field