TY  - JOUR
AU  - Engin, Ilhan
AU  - Chitgar, Zahra
AU  - Deppert, Oliver
AU  - Di Lucchio, Laura
AU  - Engels, Ralf W.
AU  - Fedorets, Pavel
AU  - Frydrych, Simon
AU  - Gibbon, Paul
AU  - Kleinschmidt, Annika
AU  - Lehrach, Andreas
AU  - Maier, Rudolf
AU  - Prasuhn, Dieter
AU  - Roth, Markus
AU  - Schlüter, Friederike
AU  - Schneider, Claus M
AU  - Stöhlker, Thomas
AU  - Strathmann, Katharina
AU  - Büscher, Markus
TI  - Laser-induced acceleration of Helium ions from unpolarized gas jets
JO  - Plasma physics and controlled fusion
VL  - 61
IS  - 11
SN  - 1361-6587
CY  - Bristol
PB  - IOP Publ.
M1  - FZJ-2019-05598
SP  - 115012
PY  - 2019
AB  - 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 (n_gas ∼ 10^19 cm−3) were illuminated with high-intensity laser pulses, I_L ~ O(10^19 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 Delta E E^-1 = 0.033) and 3.27 MeV (Delta E E^-1 = 0.055), respectively.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000503032400007
DO  - DOI:10.1088/1361-6587/ab4613
UR  - https://juser.fz-juelich.de/record/866497
ER  -