| Autor: |
Gabriel Schaumann, A. Ortner, T. Rienecker, Markus Roth, S. Bedacht, A. Blazevic, An. Tauschwitz, A. Frank, Dominik Kraus, F. Wagner, Dennis Schumacher, M. M. Basko, W. Cayzac, S. Busold, S. Faik |
| Rok vydání: |
2015 |
| Předmět: |
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| Zdroj: |
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms |
| ISSN: |
0168-583X |
| Popis: |
We present a new double hohlraum target for the creation of a moderately coupled ( 0.1 Γ 1 ) carbon plasma for energy loss and charge state measurements of projectile ions interacting with this plasma. A spherical cavity of 600 μ m in diameter is heated with a 150-J laser pulse ( λ L = 527 nm ) within 1.2 ns to produce a quasi-Planckian X-ray source with a radiation temperature of T r ≈ 100 eV . These X-rays are then used to heat volumetrically two thin carbon foils in a secondary cylindrical hohlraum to a dense plasma state. An axi-symmetric plasma column with a free-electron density of up to 8 × 10 21 cm - 3 , a temperature of T ≈ 10 eV, and an average ionization degree of Z ≈ 3 is generated. This plasma stays in a dense and an almost uniform state for about 5 ns . Ultimately, such targets are supposed to be used in experiments where a heavy ion beam is launched through the sample plasma, and the ion energy losses as well as the charge distributions are to be measured. The present paper is in a certain sense a symbiotic one, where the theoretical analysis and the experimental results are combined to investigate the basic properties and the prospects of this type of plasma targets. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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Full Text from ScienceDirect