| タイトル | Coal thickness gauge using RRAS techniques, part 1 |
| 本文（外部サイト） | http://hdl.handle.net/2060/19780012630 |
| 著者（英） | Rollwitz, W. L.; King, J. D. |
| 著者所属（英） | Southwest Research Inst. |
| 発行日 | 1978-01-20 |
| 言語 | eng |
| 内容記述 | A noncontacting sensor having a measurement range of 0 to 6 in or more, and with an accuracy of 0.5 in or better is needed to control the machinery used in modern coal mining so that the thickness of the coal layer remaining over the rock is maintained within selected bounds. The feasibility of using the radiofrequency resonance absorption (RRAS) techniques of electron magnetic resonance (EMR) and nuclear magnetic resonance (NMR) as the basis of a coal thickness gauge is discussed. The EMR technique was found, by analysis and experiments, to be well suited for this application. |
| NASA分類 | EARTH RESOURCES AND REMOTE SENSING |
| レポートNO | 78N20573
NASA-CR-150625
SWRI-15-4967 |
| 権利 | No Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/179382 |
