| タイトル | Remote in-situ elemental analysis systems for underwater application |
| 著者（英） | Stehling, K. R.; Trombka, J. I. |
| 著者所属（英） | NASA Goddard Space Flight Center |
| 発行日 | 1978-02-01 |
| 言語 | eng |
| 内容記述 | The systems approach, theoretical measurement calculations, and preliminary measurements to be used in monitoring and mapping pollutants (such as traces of heavy metals) in the Chesapeake Bay are discussed. A neutron gamma-ray method is under development for demonstrating the system. The excitation source to be used is a machine accelerator using a deuterium/tritium reaction to produce 14-MeV neutrons. The neutrons excite characteristic gamma ray emission from the neutron irradiated surface. The discrete line emission produced can be used to infer both qualitative and quantitative elemental composition. A data preprocessor will accumulate, digitize, store, format, and prepare the data for transmission which can be accomplished by telephone, microwave, and possibly satellite link to central processors. |
| NASA分類 | EARTH RESOURCES AND REMOTE SENSING |
| レポートNO | 78N21546 |
| 権利 | No Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/435331 |
|
