Charge-Transfer Processes in Warm Dense Matter: Selective Spectral Filtering for Laser-Accelerated Ion Beams
| Autor: | Manuel D. Barriga-Carrasco, Roberto Morales, M. Schnürer, J. Braenzel |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Materials science
Spectral power distribution General Physics and Astronomy Rate equation Warm dense matter Laser 01 natural sciences 010305 fluids & plasmas law.invention Ion Physics::Plasma Physics law Ionization 0103 physical sciences Radiative transfer Atomic physics 010306 general physics FOIL method |
| Zdroj: | Physical Review Letters. 120 |
| ISSN: | 1079-7114 0031-9007 |
| DOI: | 10.1103/physrevlett.120.184801 |
| Popis: | We investigate, both experimentally and theoretically, how the spectral distribution of laser accelerated carbon ions can be filtered by charge exchange processes in a double foil target setup. Carbon ions at multiple charge states with an initially wide kinetic energy spectrum, from 0.1 to 18 MeV, were detected with a remarkably narrow spectral bandwidth after they had passed through an ultrathin and partially ionized foil. With our theoretical calculations, we demonstrate that this process is a consequence of the evolution of the carbon ion charge states in the second foil. We calculated the resulting spectral distribution separately for each ion species by solving the rate equations for electron loss and capture processes within a collisional radiative model. We determine how the efficiency of charge transfer processes can be manipulated by controlling the ionization degree of the transfer matter. |
| Databáze: | OpenAIRE |
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