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Xu S, Guo ZB, Gürcan ÖD. Transition from linear Landau damping to nonlinear Bernstein-Greene-Kruskal modes via phase synchronization. Phys Rev E 2021; 103:023208. [PMID: 33736100 DOI: 10.1103/physreve.103.023208] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Accepted: 01/26/2021] [Indexed: 11/07/2022]
Abstract
Dynamics of the transition from a linear plasma wave to a nonlinear state characterized by the Bernstein-Greene-Kruskal mode is studied within the framework of the Vlasov-Poisson system. In the linear stage, the plasma distribution function (f) develops finer and finer structures in velocity space through a series of "mixing" processes leading to the Landau damping of the plasma wave. These mixing processes inevitably result in strong phase irregularities in velocity space. Using numerical simulations, it was observed that starting from the wave-particle resonance region, this irregular phase pattern gets "smoothed out" through a process of spreading of phase synchronization, which tends to reduce Landau damping, facilitating the formation of the nonlinear plasma wave as a fully synchronized final state. It is also found that there exists a residual damping for the quasisteady nonlinear wave when the phases of the particles are not fully synchronized.
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Affiliation(s)
- Shaokang Xu
- State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing 100871, China
| | - Z B Guo
- State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing 100871, China
| | - Ö D Gürcan
- Laboratoire de Physique des Plasmas, CNRS, Ecole Polytechnique, Sorbonne Université, Université Paris-Saclay, Observatoire de Paris, F-91120 Palaiseau, France
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Vieux G, Cipiccia S, Grant DW, Lemos N, Grant P, Ciocarlan C, Ersfeld B, Hur MS, Lepipas P, Manahan GG, Raj G, Reboredo Gil D, Subiel A, Welsh GH, Wiggins SM, Yoffe SR, Farmer JP, Aniculaesei C, Brunetti E, Yang X, Heathcote R, Nersisyan G, Lewis CLS, Pukhov A, Dias JM, Jaroszynski DA. An ultra-high gain and efficient amplifier based on Raman amplification in plasma. Sci Rep 2017; 7:2399. [PMID: 28546551 PMCID: PMC5445100 DOI: 10.1038/s41598-017-01783-4] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2017] [Accepted: 03/31/2017] [Indexed: 11/10/2022] Open
Abstract
Raman amplification arising from the excitation of a density echelon in plasma could lead to amplifiers that significantly exceed current power limits of conventional laser media. Here we show that 1-100 J pump pulses can amplify picojoule seed pulses to nearly joule level. The extremely high gain also leads to significant amplification of backscattered radiation from "noise", arising from stochastic plasma fluctuations that competes with externally injected seed pulses, which are amplified to similar levels at the highest pump energies. The pump energy is scattered into the seed at an oblique angle with 14 J sr-1, and net gains of more than eight orders of magnitude. The maximum gain coefficient, of 180 cm-1, exceeds high-power solid-state amplifying media by orders of magnitude. The observation of a minimum of 640 J sr-1 directly backscattered from noise, corresponding to ≈10% of the pump energy in the observation solid angle, implies potential overall efficiencies greater than 10%.
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Affiliation(s)
- G Vieux
- Department of Physics, Scottish Universities Physics Alliance and University of Strathclyde, Department of Physics, Glasgow, G4 0NG, United Kingdom.
- Institute of Physics of the ASCR, ELI-Beamlines, Na Slovance 2, 182 21, Prague, Czech Republic.
| | - S Cipiccia
- Department of Physics, Scottish Universities Physics Alliance and University of Strathclyde, Department of Physics, Glasgow, G4 0NG, United Kingdom
- Diamond Light Source, Harwell Science and Innovation Campus, Fermi Ave, Didcot, OX11 0DE, UK
| | - D W Grant
- Department of Physics, Scottish Universities Physics Alliance and University of Strathclyde, Department of Physics, Glasgow, G4 0NG, United Kingdom
| | - N Lemos
- GoLP/Instituto de Plasmas e Fusão Nuclear, Instituto Superior Técnico, Universidade de Lisboa, Lisbon, Portugal
- Lawrence Livermore National laboratory, NIF and photon Sciences, 7000, East avenue, Livermore, CA, 94550, USA
| | - P Grant
- Department of Physics, Scottish Universities Physics Alliance and University of Strathclyde, Department of Physics, Glasgow, G4 0NG, United Kingdom
| | - C Ciocarlan
- Department of Physics, Scottish Universities Physics Alliance and University of Strathclyde, Department of Physics, Glasgow, G4 0NG, United Kingdom
- IFIN-HH, National Institute for Physics and Nuclear Engineering, Bucharest, Romania
| | - B Ersfeld
- Department of Physics, Scottish Universities Physics Alliance and University of Strathclyde, Department of Physics, Glasgow, G4 0NG, United Kingdom
| | - M S Hur
- UNIST, Banyeon-ri 100. Ulju-gun, Ulsan, 689-798, South Korea
| | - P Lepipas
- Department of Physics, Scottish Universities Physics Alliance and University of Strathclyde, Department of Physics, Glasgow, G4 0NG, United Kingdom
| | - G G Manahan
- Department of Physics, Scottish Universities Physics Alliance and University of Strathclyde, Department of Physics, Glasgow, G4 0NG, United Kingdom
| | - G Raj
- Department of Physics, Scottish Universities Physics Alliance and University of Strathclyde, Department of Physics, Glasgow, G4 0NG, United Kingdom
- Centre de Physique Théorique, École Polytechnique, 91128, Palaiseau cedex, France
| | - D Reboredo Gil
- Department of Physics, Scottish Universities Physics Alliance and University of Strathclyde, Department of Physics, Glasgow, G4 0NG, United Kingdom
| | - A Subiel
- Department of Physics, Scottish Universities Physics Alliance and University of Strathclyde, Department of Physics, Glasgow, G4 0NG, United Kingdom
- Medical Radiation Science, National Physical Laboratory, Medical Radiation Science, Hampton Road, Teddington, Middlesex, TW11 0LW, UK
| | - G H Welsh
- Department of Physics, Scottish Universities Physics Alliance and University of Strathclyde, Department of Physics, Glasgow, G4 0NG, United Kingdom
| | - S M Wiggins
- Department of Physics, Scottish Universities Physics Alliance and University of Strathclyde, Department of Physics, Glasgow, G4 0NG, United Kingdom
| | - S R Yoffe
- Department of Physics, Scottish Universities Physics Alliance and University of Strathclyde, Department of Physics, Glasgow, G4 0NG, United Kingdom
| | - J P Farmer
- Theoretische Physik I, Heinrich Heine Universität, 40225, Düsseldorf, Germany
| | - C Aniculaesei
- Department of Physics, Scottish Universities Physics Alliance and University of Strathclyde, Department of Physics, Glasgow, G4 0NG, United Kingdom
- Center for Relativistic Laser Science, Institute for Basic Science, Gwangju, 61005, Republic of Korea
| | - E Brunetti
- Department of Physics, Scottish Universities Physics Alliance and University of Strathclyde, Department of Physics, Glasgow, G4 0NG, United Kingdom
| | - X Yang
- Department of Physics, Scottish Universities Physics Alliance and University of Strathclyde, Department of Physics, Glasgow, G4 0NG, United Kingdom
- Department of Physics, Capital Normal University, Key Lab of Terahertz Optoelectronics, Ministry of Education, and Beijing Advanced Innovation Center for Imaging Technology, Beijing, 100048, China
| | - R Heathcote
- Central Laser Facility, Rutherford Appleton Laboratory, Didcot, OX11 0QX, United Kingdom
| | - G Nersisyan
- Centre for Plasma Physics, School of Mathematics and Physics, Queens University Belfast, Belfast, BT7 1NN, United Kingdom
| | - C L S Lewis
- Centre for Plasma Physics, School of Mathematics and Physics, Queens University Belfast, Belfast, BT7 1NN, United Kingdom
| | - A Pukhov
- Theoretische Physik I, Heinrich Heine Universität, 40225, Düsseldorf, Germany
| | - J M Dias
- GoLP/Instituto de Plasmas e Fusão Nuclear, Instituto Superior Técnico, Universidade de Lisboa, Lisbon, Portugal
| | - D A Jaroszynski
- Department of Physics, Scottish Universities Physics Alliance and University of Strathclyde, Department of Physics, Glasgow, G4 0NG, United Kingdom.
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