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Journal articles
Ion acceleration in the transparent regime and the critical influence of the plasma density scale length
R. A. Loch
1, 2
T. Ceccotti
3, 4
F. Quéré
3, 4
H. George
5, 3
G. Bonnaud
6
F. Réau
3, 5
P. d'Oliveira
3, 5
M. J. H. Luttikhof
1
F. Bijkerk
1, 2
K.-J. Boller
1, 2
G. Blaclard
6
P. Combis
7
4
PHI - Physique à Haute Intensité
IRAMIS - Institut Rayonnement Matière de Saclay, LIDyl - Laboratoire Interactions, Dynamiques et Lasers (ex SPAM)
5
SLIC - Serveurs Laser
IRAMIS - Institut Rayonnement Matière de Saclay, LIDyl - Laboratoire Interactions, Dynamiques et Lasers (ex SPAM)
1
MESA+ - Institute for Nanotechnology (Faculty of Science and Technology and MESA+ P.O. Box 217, 7500 AE Enschede, The Netherlands - Netherlands)
- University of Twente [Netherlands] (Drienerlolaan 5, 7522 NB Enschede - Netherlands)
2
DIFFER - Dutch Institute for Fundamental Energy Research [Eindhoven] (TU/e Science Park
De Zaale 20
5612 AJ Eindhoven - Netherlands)
3
LIDyl - Laboratoire Interactions, Dynamiques et Lasers (ex SPAM) (LIDYL, CEA, CNRS, Université Paris-Saclay, CEA Saclay 91190 Gif sur Yvette - France)
- CEA - Commissariat à l'énergie atomique et aux énergies alternatives : DRF/IRAMIS (Centre de Saclay Centre de Grenoble Centre de Cadarache etc - France)
- Université Paris-Saclay (Espace Technologique, Bat. Discovery - RD 128 - 2e ét., 91190 Saint-Aubin - France)
- CNRS - Centre National de la Recherche Scientifique : UMR9222 (France)
4
PHI - Physique à Haute Intensité (France)
- IRAMIS - Institut Rayonnement Matière de Saclay (91191 Gif-sur-Yvette, France - France)
- CEA - Commissariat à l'énergie atomique et aux énergies alternatives : DRF/IRAMIS (Centre de Saclay Centre de Grenoble Centre de Cadarache etc - France)
- Université Paris-Saclay (Espace Technologique, Bat. Discovery - RD 128 - 2e ét., 91190 Saint-Aubin - France)
- LIDyl - Laboratoire Interactions, Dynamiques et Lasers (ex SPAM) (LIDYL, CEA, CNRS, Université Paris-Saclay, CEA Saclay 91190 Gif sur Yvette - France)
- CEA - Commissariat à l'énergie atomique et aux énergies alternatives : DRF/IRAMIS (Centre de Saclay Centre de Grenoble Centre de Cadarache etc - France)
- Université Paris-Saclay (Espace Technologique, Bat. Discovery - RD 128 - 2e ét., 91190 Saint-Aubin - France)
- CNRS - Centre National de la Recherche Scientifique : UMR9222 (France)
5
SLIC - Serveurs Laser (France)
- IRAMIS - Institut Rayonnement Matière de Saclay (91191 Gif-sur-Yvette, France - France)
- CEA - Commissariat à l'énergie atomique et aux énergies alternatives : DRF/IRAMIS (Centre de Saclay Centre de Grenoble Centre de Cadarache etc - France)
- Université Paris-Saclay (Espace Technologique, Bat. Discovery - RD 128 - 2e ét., 91190 Saint-Aubin - France)
- LIDyl - Laboratoire Interactions, Dynamiques et Lasers (ex SPAM) (LIDYL, CEA, CNRS, Université Paris-Saclay, CEA Saclay 91190 Gif sur Yvette - France)
- CEA - Commissariat à l'énergie atomique et aux énergies alternatives : DRF/IRAMIS (Centre de Saclay Centre de Grenoble Centre de Cadarache etc - France)
- Université Paris-Saclay (Espace Technologique, Bat. Discovery - RD 128 - 2e ét., 91190 Saint-Aubin - France)
- CNRS - Centre National de la Recherche Scientifique : UMR9222 (France)
6
INSTN - Institut National des Sciences et Techniques Nucléaires (CEA de Saclay F-91191 Gif-sur-Yvette Cedex - France)
- CEA - Commissariat à l'énergie atomique et aux énergies alternatives (Centre de Saclay Centre de Grenoble Centre de Cadarache etc - France)
- Université Paris-Saclay (Espace Technologique, Bat. Discovery - RD 128 - 2e ét., 91190 Saint-Aubin - France)
7
DPTA - Département de Physique Théorique et Appliquée (CEA Bruyères le Châtel DAM/DIF/DPTA 91297 Arpajon - France)
- DAM/DIF - DAM Île-de-France : DAM/DIF (CEA Bruyères-le-Châtel 91297 Arpajon cedex - France)
- DAM - Direction des Applications Militaires : DAM/DIF (France)
- CEA - Commissariat à l'énergie atomique et aux énergies alternatives : DAM (Centre de Saclay Centre de Grenoble Centre de Cadarache etc - France)
- DAM - Direction des Applications Militaires : DAM/DIF (France)
Abstract : The influence of a plasma density gradient on ions accelerated along the specular (back reflection) direction in the transparent Target Normal Sheath Acceleration regime is investigated. Enhanced acceleration of ions is experimentally observed in this regime using high-intensity and ultra-high contrast laser pulses and extremely thin foils of few nanometer thicknesses. The experimental trend for the maximum proton energy appeared quite different from the already published numerical results in this regime where an infinitely steep plasma gradient was assumed. We showed that for a realistic modelling, a finite density gradient has to be taken into account. By means of particle-in-cell (PIC) simulations, we studied for the first time the influence of the plasma density scale length on ion acceleration from these nanofoil targets. Through a qualitative agreement between our numerical particle-in-cell simulations and our experiments, the main conclusion with regard to the experimental requirements is that, in the transparent regime evidenced with nanofoils as compared to the opaque regime, the plasma expansion has to be taken into account and both the pulse contrast and the damage threshold of the material are essential parameters.
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Journal articles
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https://hal-cea.archives-ouvertes.fr/cea-01426891
Contributor : Caroline Lebe <>
Submitted on : Thursday, January 5, 2017 - 9:43:54 AM
Last modification on : Friday, March 5, 2021 - 3:00:04 PM
Contributor : Caroline Lebe <>
Submitted on : Thursday, January 5, 2017 - 9:43:54 AM
Last modification on : Friday, March 5, 2021 - 3:00:04 PM
Identifiers
- HAL Id : cea-01426891, version 1
- DOI : 10.1063/1.4962571
Collections
CEA | CNRS | DSM-IRAMIS | IRAMIS-LIDYL | CEA-DRF | CEA-UPSAY | DAM | IRAMIS
Citation
R. A. Loch, T. Ceccotti, F. Quéré, H. George, G. Bonnaud, et al.. Ion acceleration in the transparent regime and the critical influence of the plasma density scale length . Physics of Plasmas, American Institute of Physics, 2016, 23 (9), pp.093117. ⟨10.1063/1.4962571⟩. ⟨cea-01426891⟩
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