| タイトル | Surface roughness studies with DALLAS-detector array for laser light angular scattering |
| 著者（英） | Vorburger, T. V.; Teague, E. C.; Gilsinn, D. E.; Scire, F. E.; Mclay, M. J. |
| 著者所属（英） | National Bureau of Standards |
| 発行日 | 1984-02-01 |
| 言語 | eng |
| 内容記述 | An attempt is made to develop a better mathematical description of optical scattering phenomena, in order to construct an optical scattering apparatus for reliable and routine measurements of roughness parameters without resorting to comparator standards. After a brief outline of optical scattering theory, a description is presented of an experimental instrument for measuring surface roughness which incorporates optical scattering principles. The instrument has a He-Ne laser which illuminates the test surface at a variable angle of incidence. Scattered light distribution is detected by an array of 87 fiber-optic sensors positioned in a rotating semicircular yoke. The output from the detector is digitized and analyzed in a laboratory computer. For a comparison with experimental data, theoretical distributions are calculated by substituting the roughness profiles into the operand of and integral equation for electromagnetic scattering developed by Beckmann and Spizzichino (1963). A schematic diagram of the instrument is provided and the general implications of the experimental results are discussed. |
| NASA分類 | INSTRUMENTATION AND PHOTOGRAPHY |
| レポートNO | 84A43217 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/396939 |
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