... characteristics

Based on observations with INTEGRAL, an ESA project with instruments and science data centre funded by ESA member states (especially the PI countries: Denmark, France, Germany, Italy, Switzerland, Spain), Czech Republic and Poland, and with the participation of Russia and the USA.

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... delay

Delay with respect to the instant of production of the unstable nucleus which is approximatively equal to the instant of interaction of the primary cosmic-ray proton.

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... weak

Except during solar flare and in electron belts (shortly before end-of-orbit)

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