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Article Dans Une Revue Physica Scripta Année : 1999

Multiple Ionisation and High Charge Effects in Electron Spectra from Impact of 9 MeV/u Ions on Carbon

Résumé

We measured energy spectra of electrons emitted from sputter-cleaned amorphous carbon targets bombarded with swift ions of constant velocity (9 MeV/u, vP = 19v0) with a new UHV set-up at the heavy ion accelerator GANIL. The charge of the projectile qp varied from 6 to 45. At large electron energy, a qp2 scaling law is observed. For energies below the 1s ionisation threshold, strong reduction effects with increasing qp occur. A carbon Auger hypersatellite line due to double ionisation of the K shell appears for high projectile charge only. From these Auger spectra, the ratio of double and single ionisation was deduced as a function of qp and found to increase from a threshold up to a saturation.

Dates et versions

hal-00994441 , version 1 (21-05-2014)

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M. Caron, H. Rothard, M. Beuve, B. Gervais. Multiple Ionisation and High Charge Effects in Electron Spectra from Impact of 9 MeV/u Ions on Carbon. Physica Scripta, 1999, 80 (2), pp.331-332. ⟨10.1238/Physica.Topical.080a00331⟩. ⟨hal-00994441⟩
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