| Autor: |
Orsini, S., Di Lellis, A. M., Milillo, A., De Angelis, E., Mura, A., Selci, S., Dandouras, I., Cerulli-Irelli, P., Leoni, R., Mangano, V., Massetti, S., Mattioli, F., Orfei, R., Austin, C., Medale, J.-L., Vertolli, N., Di Giulio, D. |
| Předmět: |
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| Zdroj: |
AIP Conference Proceedings; 6/16/2009, Vol. 1144 Issue 1, p91-101, 11p, 3 Diagrams, 1 Chart, 7 Graphs |
| Abstrakt: |
The neutral sensor ELENA (Emitted Low-Energy Neutral Atoms) for the ESA cornerstone BepiColombo mission to Mercury (in the SERENA instrument package) is a new kind of low energetic neutral atoms instrument, mostly devoted to sputtering emission from planetary surfaces, from E∼20 eV up to E∼5 keV, within 1-D (2°×76°). ELENA is a Time-of-Flight (TOF) system, based on oscillating shutter (operated at frequencies up to a 100 kHz) and mechanical gratings: the incoming neutral particles directly impinge upon the entrance with a definite timing (START) and arrive to a STOP detector after a flight path. After a brief dissertation on the achievable scientific objectives, this paper describes the instrument, with the new design techniques approached for the neutral particles identification and the nano-techniques used for designing and manufacturing the nano-structure shuttering core of the ELENA sensor. The expected count-rates, based on the Hermean environment features, are shortly presented and discussed. Such design technologies could be fruitfully exported to different applications for planetary exploration. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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