Orion project : Acceleration of cluster ions and highly charged biomolecules from 10 MeV to 1 GeV

• Cluster ions-projectiles have been revealed to be very efficient to drive energy or momentum on a solid surface. The impact of massive cluster is able to produce high energy density on a narrow area. Astonishing non linear effect has been observed [1] in the yield of secondary ions emission desorbed from a surface bombarded by molecular or clusters ions. The ORION project consists in accelerating with the Orsay Tandem, cluster ions and in a further step, charged biomolecules, in order to investigate these processes in a velocity range which correspond to their maximum of efficiency (a few keV per mass unit). This paper presents preliminary attemps and first results in creating C 60 and C 70 molecular ion beams using the Orsay Tandem accelerating structure.

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