| Autor: |
Ilhan Engin, Zahra M Chitgar, Oliver Deppert, Laura Di Lucchio, Ralf Engels, Pavel Fedorets, Simon Frydrych, Paul Gibbon, Annika Kleinschmidt, Andreas Lehrach, Rudolf Maier, Dieter Prasuhn, Markus Roth, Friederike Schlüter, Claus M Schneider, Thomas Stöhlker, Katharina Strathmann, Markus Büscher |
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| Zdroj: |
Plasma Physics & Controlled Fusion; Nov2019, Vol. 61 Issue 11, p1-1, 1p |
| Abstrakt: |
In order to develop a laser-driven spin-polarized 3He-ion beam source available for nuclear-physics experiments as well as for the investigation of polarized nuclear fusion, several challenges have to be overcome. Apart from the provision of a properly polarized 3He gas-jet target, one of the biggest milestones is the demonstration of the general feasibility of laser-induced ion acceleration out of gas-jet targets. Of particular importance is the knowledge about the main ion-emission angles as well as the achievable ion-energy spectra (dependent on the optimal set of laser and target parameters). We report on the results of such a feasibility study performed at PHELIX, GSI Darmstadt. Both 3He- and 4He-gas jets (ngas ∼ 1019 cm−3) were illuminated with high-intensity laser pulses, . The main ion-emission angles could be identified (±90° with respect to the laser-propagation direction) and the ion-energy spectra for all ion species could be extracted: for the optimal laser and target parameters, the high-energy cut-offs for He ions were 4.65 MeV (with a normalized energy uncertainty of ) and 3.27 MeV (), respectively. [ABSTRACT FROM AUTHOR] |
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Complementary Index |
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