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Laser-induced acceleration of Helium ions from unpolarized gas jets

Engin, Ilhan ; Chitgar, Zahra M. ; Deppert, Oliver ; Di Lucchio, Laura ; Engels, Ralf ; Fedorets, Pavel ; Frydrych, Simon ; Gibbon, Paul ; Kleinschmidt, Annika ; Lehrach, Andreas ; Maier, Rudolf ; Prasuhn, Dieter ; Roth, Markus ; Schlüter, Friederike ; Schneider, Claus M. ; Stöhlker, Thomas ; Strathmann, Katharina ; Büscher, Markus (2024)
Laser-induced acceleration of Helium ions from unpolarized gas jets.
In: Plasma Physics and Controlled Fusion, 2019, 61 (11)
doi: 10.26083/tuprints-00020502
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Item Type: Article
Type of entry: Secondary publication
Title: Laser-induced acceleration of Helium ions from unpolarized gas jets
Language: English
Date: 5 March 2024
Place of Publication: Darmstadt
Year of primary publication: 2019
Place of primary publication: Bristol
Publisher: IOP Publishing
Journal or Publication Title: Plasma Physics and Controlled Fusion
Volume of the journal: 61
Issue Number: 11
Collation: 11 Seiten
DOI: 10.26083/tuprints-00020502
Corresponding Links:
Origin: Secondary publication DeepGreen
Abstract:

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, IL ∼ O (10¹⁹ W cm⁻²). 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 ²⁺,¹⁺ ions were 4.65 MeV (with a normalized energy uncertainty of Δ ɛ​ ɛ​⁻¹ = 0.033) and 3.27 MeV (Δ ɛ​ ɛ​⁻¹= 0.055), respectively.

Uncontrolled Keywords: laser-driven He-ion acceleration, spin-polarized ion source, polarized nuclear fusion
Status: Publisher's Version
URN: urn:nbn:de:tuda-tuprints-205020
Classification DDC: 500 Science and mathematics > 530 Physics
Divisions: 05 Department of Physics > Institute of Nuclear Physics
Date Deposited: 05 Mar 2024 12:19
Last Modified: 05 Mar 2024 12:19
SWORD Depositor: Deep Green
URI: https://tuprints.ulb.tu-darmstadt.de/id/eprint/20502
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