Bulletin of the American Physical Society
60th Annual Meeting of the APS Division of Plasma Physics
Volume 63, Number 11
Monday–Friday, November 5–9, 2018; Portland, Oregon
Session YP11: Poster Session IX: The crossover between high-energy-density plasmas and ultracold neutral plasmas ; Supplemental; Post-Deadline Abstracts (9:30am-12:30pm)
Friday, November 9, 2018
OCC
Room: Exhibit Hall A1&A
Abstract ID: BAPS.2018.DPP.YP11.3
Abstract: YP11.00003 : Acceleration of L-shell gold ions from sub-micrometer structured foil irradiated by a high-contrast and high-intensity picosecond laser.*
Presenter:
Mathieu Bailly-Grandvaux
(Univ of California - San Diego)
Authors:
Mathieu Bailly-Grandvaux
(Univ of California - San Diego)
Brandon C Edghill
(Univ of California - San Diego)
Christopher S McGuffey
(Univ of California - San Diego)
Maylis m Dozieres
(Univ of California - San Diego)
Mingsheng Wei
(General Atomics - San Diego)
Neil B Alexander
(General Atomics - San Diego)
Alex Haid
(General Atomics - San Diego)
Christian Brabetz
(GSI)
Vincent Bagnoud
(GSI)
Paul Neumayer
(GSI)
Farhat N Beg
(Univ of California - San Diego)
Laser-driven heavy ion beams are ideally suited for experiments requiring fast isochoric heating due to the exceptionally high current density of the beams and the high energy deposition rate of the ions. We report here the acceleration of highly charged gold ions (51+ to 61+) up to ~ 400 MeV by laser irradiating sub-micrometer-thick foils as is typical in studies of proton and lighter ion acceleration, without removing the contaminant layer. Microstructures with variable array geometry were 3D-printed on the front surface of the foils to tune the spectral shape and relative number of accelerated ions. The experiment was performed with the PHELIX laser at GSI (Darmstadt, Germany) and the pulses (~150 J, 0.5 ps, 1.054 μm) were focused at ~15º incidence angle on the targets to intensities of ~6×1020 W/cm2, with a prepulse contrast ratio of ~10-12. The high charges and accelerated energies of such low q/m ions (<0.3) were enabled by the very high contrast and sustained pulse duration of the laser, inducing very strong volumetric heating. X-ray line emissions from different target components help elucidate the interaction.
*This work was performed under AFOSR, grant number FA9550-14-1-0282, and with the support from UCOP, Lab Fee grant number LFR-17-449059.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2018.DPP.YP11.3
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