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Journal articles
Self-generated surface magnetic fields inhibit laser-driven sheath acceleration of high-energy protons
M. Nakatsutsumi
1
Y. Sentoku
2
A. Korzhimanov
3
S. Chen
1, 3
S. Buffechoux
1
A. Kon
2
B. Atherton
4
P. Audebert
1
M. Geissel
4
L. Hurd
1
M. Kimmel
4
P. Rambo
4
M. Schollmeier
4
J. Schwarz
4
M. Starodubtsev
3
L. Gremillet
5
R. Kodama
6, 2
J. Fuchs
1, 3
S. Buffechoux 1
Author
A. Kon 2
Author
B. Atherton 4
Author
P. Audebert 1
Author IdHAL : patrick-audebert ResearcherId : http://www.researcherid.com/rid/ABG-1351-2020 ORCID : https://orcid.org/0000-0002-1330-3946
R. Kodama 6, 2
Author
J. Fuchs 1, 3
Author IdHAL : julienfuchs ResearcherId : http://www.researcherid.com/rid/D-3450-2016 ORCID : https://orcid.org/0000-0001-9765-0787
1
LULI - Laboratoire pour l'utilisation des lasers intenses (LULI, École Polytechnique, route de Saclay 91128 Palaiseau Cedex, France LULI, Université Pierre et Marie Curie (Paris 6) 3 rue Galilée 9420 Ivry-sur-Seine, France - France)
- CEA - Commissariat à l'énergie atomique et aux énergies alternatives : DAM/DIF (Centre de Saclay Centre de Grenoble Centre de Cadarache etc - France)
- X - École polytechnique (École polytechnique, 91128 Palaiseau Cedex - France)
- SU - Sorbonne Université (21 rue de l’École de médecine - 75006 Paris - France)
- CNRS - Centre National de la Recherche Scientifique : UMR7605 (France)
2
Osaka University [Osaka] (1-1 Yamadaoka, Suita,Osaka 565-0871 - Japan)
3
IAP, Nizhny Novgorod - Institute of Applied Physics (46 Ulyanov Street, 603950, Nizhny Novgorod, Russia - Russia)
4
SNL - Sandia National Laboratories [Albuquerque] (PO Box 5800 Albuquerque, NM 87185 - United States)
- Sandia National Laboratories - Corporation (United States)
5
DAM - Direction des Applications Militaires (France)
- CEA - Commissariat à l'énergie atomique et aux énergies alternatives : DAM (Centre de Saclay Centre de Grenoble Centre de Cadarache etc - France)
6
Graduate School of Engineering, Osaka University (Suita, Osaka 565-0871 - Japan)
- Graduate School of Engineering (France)
Abstract : High-intensity lasers interacting with solid foils produce copious numbers of relativistic electrons, which in turn create strong sheath electric fields around the target. The proton beams accelerated in such fields have remarkable properties, enabling ultrafast radiography of plasma phenomena or isochoric heating of dense materials. In view of longer-term multidisciplinary purposes (e.g., spallation neutron sources or cancer therapy), the current challenge is to achieve proton energies well in excess of 100 MeV, which is commonly thought to be possible by raising the on-target laser intensity. Here we present experimental and numerical results demonstrating that magnetostatic fields self-generated on the target surface may pose a fundamental limit to sheath-driven ion acceleration for high enough laser intensities. Those fields can be strong enough (~10$^5$ T at laser intensities ~10$^{21}$ W cm$^{–2}$) to magnetize the sheath electrons and deflect protons off the accelerating region, hence degrading the maximum energy the latter can acquire.
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Journal articles
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https://hal-cea.archives-ouvertes.fr/cea-01881052
Contributor : Bruno Savelli Connect in order to contact the contributor
Submitted on : Tuesday, September 25, 2018 - 2:22:49 PM
Last modification on : Tuesday, January 4, 2022 - 5:40:38 AM
Contributor : Bruno Savelli Connect in order to contact the contributor
Submitted on : Tuesday, September 25, 2018 - 2:22:49 PM
Last modification on : Tuesday, January 4, 2022 - 5:40:38 AM
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Distributed under a Creative Commons Attribution 4.0 International License
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Identifiers
- HAL Id : cea-01881052, version 1
- DOI : 10.1038/s41467-017-02436-w
Collections
CEA | CNRS | X-DEP-PHYS | DAM | X | SORBONNE-UNIVERSITE | X-LULI | SU-SCIENCES | SU-TI | ANR
Citation
M. Nakatsutsumi, Y. Sentoku, A. Korzhimanov, S. Chen, S. Buffechoux, et al.. Self-generated surface magnetic fields inhibit laser-driven sheath acceleration of high-energy protons. Nature Communications, Nature Publishing Group, 2018, 9, pp.280. ⟨10.1038/s41467-017-02436-w⟩. ⟨cea-01881052⟩
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