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Sep 13 – 19, 2015
La Biodola, Isola d'Elba
Europe/Rome timezone

Ion acceleration driven by high intensity, multiple beams at Arcturus Laser System

Sep 14, 2015, 7:05 PM
20m
SB1 Sala Bonaparte 1 (Hotel Hermitage)

SB1 Sala Bonaparte 1

Hotel Hermitage

talk WG2 - Ion beams from plasmas WG2 - Ion beams from plasmas

Speaker

Rajendra PRASAD

Description

Here, we report novel experimental results on topic ion acceleration in ultra-high intensity regime using multiple beams. The experiments have been performed at Arcturus laser facility (Heinrich Heine University, Düsseldorf) using both arms of ultra-short 200TW beams and a 10 TW probe pulse. The main interaction beams (energy up to 6J and pulse duration 30 fs) were focused at intensities >1020 W/cm2 and spatially overlapped onto thin Ti foil. The system allows relative temporal delay between pulses and independently control pulse contrast by means of the separate plasma-mirror setups. The ion beams accelerated on the target rear side were monitored by two Thomson spectrometers (0° and 10°). Depending on the relative delay between the beams, different interaction regimes can be accessed and recognized in the enhancement of the ion energy and/or modulation of the energy spectrum. For example, at the relative temporal delay of 250 ps, the proton energy was enhanced up to 50%. Furthermore, enhancement of heavy ion (e.g. C+4) energies and increase in flux near the cut-off energies were also observed at different delays. The dynamic of the expanding plasma was monitored by high resolution spectral interferometry and reflectrometry.

Primary author

Rajendra PRASAD

Co-authors

Dr Bastian Aurand (Institute for Laser and Plasma Physics, Heinrich Heine University Düsseldorf, Germany) Dr Jürgen Böker (Institute for Laser and Plasma Physics, Heinrich Heine University Düsseldorf, Germany) Marco Swantusch (Institute for Laser and Plasma Physics, Heinrich Heine University Düsseldorf, Germany) Prof. Oswald Willi (Institute for Laser and Plasma Physics, Heinrich Heine University Düsseldorf, Germany) Dr Rajendra Prasad (Institute for Laser and Plasma Physics, Heinrich Heine University Düsseldorf, Germany) Sven Spickermann (Institute for Laser and Plasma Physics, Heinrich Heine University Düsseldorf, Germany) Dr Toma Toncian (Center for High Energy Physics, University of Texas at Austin, TX, United States)

Presentation materials

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