Free Access

Fig. 6


Spectral decomposition into lines, near the positron annihilation line at 511 keV (above), and the 26Al line (below). The annihilation line itself requires a composite model of a narrow (instrumental width) and a broader component, representing different modes of β-decay in spacecraft or detector materials. Several low-intensity lines at nearby energies are part of the spectral model, all modelled as Gaussians (red dashed lines). The isotopes causing these various background lines are indicated when identified.

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.