2006, English, Article edition: Ion slowing down and charge exchange at small impact parameters selected by channeling: superdensity effects L'Hoir, A.; Adoui, A.; Barrué, F.; ...

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Physical Description
  • text
Published
  • HAL - CCSD
  • 2006
Language
  • English

Edition details

Title
  • Ion slowing down and charge exchange at small impact parameters selected by channeling: superdensity effects
Author
  • L'Hoir, A.
  • Adoui, A.
  • Barrué, F.
  • Billebaud, A.
  • Bosch, F.
  • Bräuning-Demian, A.
  • Bräuning, H.
  • Cassimi, A.
  • Chevallier, M.
  • Cohen, C.
  • Dauvergne, D.
  • Demonchy, C.E.
  • Giot, L.
  • Kirsch, R.
  • Gumberidze, A.
  • Kozhuharov, C.
  • Liesen, D.
  • Mittig, W.
  • Mokler, P.H.
  • Pita, S.
  • Poizat, J.-C.
  • Ray, C.
  • Roussel-Chomaz, P.
  • Rothard, H.
  • Rozet, J.-P.
  • Stöhlker, Th.
  • Tarisien, M.
  • Testa, E.
  • Toleikis, S.
  • Toulemonde, M.
  • Vernhet, D.
Published
  • HAL - CCSD
  • 2006
Physical Description
  • text
Subjects
Notes
  • In two experiments performed with 20-30 MeV/​u highly charged heavy ions (Pb56+, U91+) channeled through thin silicon crystals, we observed the original features of superdensity, associated to the glancing collisions with atomic rows undergone by part of the incident projectiles. In particular the very high collision rate yields a quite specific charge exchange regime, that leads to a higher ionization probability than in random conditions. X-ray measurements show that electrons captured in outershells are prevented from being stabilized, which enhances the lifetime of the projectile innershell vacancies. The charge state distributions and the energy loss spectra are compared to Monte-Carlo simulations. These simulations confirm, extend and illustrate the qualitative analysis of the experimental results.
  • HAL:in2p3-00025220, version 1
  • HAL:http:/​/​hal.in2p3.fr/​in2p3-00025220/​en/​
  • DOI:10.1016/​j.nimb.2005.11.055
Language
  • English
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