Preprint / Condensed Matter E14-2003-24 JINR-E14-2003-24

Cooling and Heating of the Ion Flux on the Transmission through Crystals

Karamian, Z ; Gruener, F ; Assmann, R W

Pages: 12 p
Year: 2003

Abstract: Transmission of charged particles through a monocrystalline medium is accompanied by many interesting phenomena, and a new one - redistribution of the isotropic flux - is now studied experimentally and described in the present work. The cooling or heating in the transverse momentum coordinate arises as a result of crystal-induced modification of the transmission trajectories. This indicates the violation of the reversibility rule, and cannot be explained within prevailing theory of channeling. The type of image (enhancement or reduction) and its intensity are dependent on the ion and crystal species, on an energy of ions and on the crystal thickness. Such dependencies have been studied experimentally and the mechanism involving the regular sequence of charge-exchange events with the transverse-energy non-conservation is attracted for understanding. The crystal response to ion flux transmission is also reviewed and characterized by the original results.

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Language: eng

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 Record created 2010-10-01, last modified 2014-01-30

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