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Fig. 4.
Same as Fig. 2, but vantage point is at (0.1,
1.6, 0) R M
MSE. Sun is on the
right.
Fig. 5. 2D image of surface oxygen emission, obtained by the superimposition of 31
ELENA simulated measurements. Color is coded according to ELENA 30 s count rates,
integrated over all energies above oxygen escape energy. Geometrical factor of ELENA
(but no MCP e ciency) is included.
Ion-sputtering : The detection of ion-sputtering ENAs deals with sev-
eral scientific objects of BC/MPO mission, 11 such as the study of particle
loss-rate, surface emissivity, ion-sputtering process, and proton precipita-
tion. Figure 5 is an example of ELENA simulated O-ENA signal. The 2D
image of surface Oxygen emission is obtained with the help of s/c motion,
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