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Ong JF, Zubarev A, Berceanu AC, Cuzminschi M, Tesileanu O. Nanowire implosion under laser amplified spontaneous emission pedestal irradiation. Sci Rep 2023; 13:20699. [PMID: 38001241 PMCID: PMC10673875 DOI: 10.1038/s41598-023-48090-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Accepted: 11/22/2023] [Indexed: 11/26/2023] Open
Abstract
Nanowire array targets exhibit high optical absorption when interacting with short, intense laser pulses. This leads to an increased yield in the production of accelerated particles for a variety of applications. However, these interactions are sensitive to the laser prepulse and could be significantly affected. Here, we show that an array of aligned nanowires is imploded when irradiated by an Amplified Spontaneous Emission pedestal of a [Formula: see text] laser with an intensity on the order of [Formula: see text]. Using radiation hydrodynamics simulations, we demonstrate that the electron density profile is radially compressed at the tip by the rocket-like propulsion of the ablated plasma. The mass density compression increases up to [Formula: see text] when a more dense nanowire array is used. This is due to the ablation pressure from the neighboring nanowires. These findings offer valuable information for selecting an appropriate target design for experiments aimed at enhancing production of accelerated particles.
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Affiliation(s)
- J F Ong
- Extreme Light Infrastructure - Nuclear Physics (ELI-NP), Horia Hulubei National Institute for R &D in Physics and Nuclear Engineering (IFIN-HH), 30 Reactorului Street, 077125, Bucharest-Măgurele, Romania.
| | - A Zubarev
- Extreme Light Infrastructure - Nuclear Physics (ELI-NP), Horia Hulubei National Institute for R &D in Physics and Nuclear Engineering (IFIN-HH), 30 Reactorului Street, 077125, Bucharest-Măgurele, Romania
- National Institute for Laser, Plasma and Radiation Physics, 077125, Bucharest-Măgurele, Romania
| | - A C Berceanu
- Extreme Light Infrastructure - Nuclear Physics (ELI-NP), Horia Hulubei National Institute for R &D in Physics and Nuclear Engineering (IFIN-HH), 30 Reactorului Street, 077125, Bucharest-Măgurele, Romania
| | - M Cuzminschi
- Horia Hulubei National Institute for R &D in Physics and Nuclear Engineering (IFIN-HH), 30 Reactorului Street, 077125, Bucharest-Măgurele, Romania
- Faculty of Physics, University of Bucharest, 077125, Bucharest-Măgurele, Romania
| | - O Tesileanu
- Extreme Light Infrastructure - Nuclear Physics (ELI-NP), Horia Hulubei National Institute for R &D in Physics and Nuclear Engineering (IFIN-HH), 30 Reactorului Street, 077125, Bucharest-Măgurele, Romania
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Shi Y, Arefiev A, Hao JX, Zheng J. Efficient Generation of Axial Magnetic Field by Multiple Laser Beams with Twisted Pointing Directions. PHYSICAL REVIEW LETTERS 2023; 130:155101. [PMID: 37115879 DOI: 10.1103/physrevlett.130.155101] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Accepted: 03/17/2023] [Indexed: 06/19/2023]
Abstract
Strong laser-driven magnetic fields are crucial for high-energy-density physics and laboratory astrophysics research, but generation of axial multikilotesla fields remains a challenge. The difficulty comes from the inability of a conventional linearly polarized laser beam to induce the required azimuthal current or, equivalently, angular momentum (AM). We show that several laser beams can overcome this difficulty. Our three-dimensional kinetic simulations demonstrate that a twist in their pointing directions enables them to carry orbital AM and transfer it to the plasma, thus generating a hot electron population carrying AM needed to sustain the magnetic field. The resulting multikilotesla field occupies a volume that is tens of thousands of cubic microns and it persists on a picosecond timescale. The mechanism can be realized for a wide range of laser intensities and pulse durations. Our scheme is well suited for implementation using multikilojoule petawatt-class lasers, because, by design, they have multiple beamlets and because the scheme requires only linear polarization.
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Affiliation(s)
- Yin Shi
- Department of Plasma Physics and Fusion Engineering, University of Science and Technology of China, Hefei 230026, China
| | - Alexey Arefiev
- Department of Mechanical and Aerospace Engineering, University of California at San Diego, La Jolla, California 92093, USA
| | - Jue Xuan Hao
- Department of Plasma Physics and Fusion Engineering, University of Science and Technology of China, Hefei 230026, China
| | - Jian Zheng
- Department of Plasma Physics and Fusion Engineering, University of Science and Technology of China, Hefei 230026, China
- Collaborative Innovation Center of IFSA, Shanghai Jiao Tong University, Shanghai 200240, Peoples Republic of China
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Ehret M, Kochetkov Y, Abe Y, Law KFF, Bukharskii N, Stepanischev V, Fujioka S, d'Humières E, Zielbauer B, Bagnoud V, Schaumann G, Somekawa T, Roth M, Tikhonchuk V, Santos JJ, Korneev P. Kilotesla plasmoid formation by a trapped relativistic laser beam. Phys Rev E 2022; 106:045211. [PMID: 36397600 DOI: 10.1103/physreve.106.045211] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2019] [Accepted: 10/04/2022] [Indexed: 06/16/2023]
Abstract
A strong quasistationary magnetic field is generated in hollow targets with curved internal surface under the action of a relativistically intense picosecond laser pulse. Experimental data evidence the formation of quasistationary strongly magnetized plasma structures decaying on a hundred picoseconds timescale, with the magnetic field strength of the kilotesla scale. Numerical simulations unravel the importance of transient processes during the magnetic field generation and suggest the existence of fast and slow regimes of plasmoid evolution depending on the interaction parameters. The proposed setup is suited for perspective highly magnetized plasma application and fundamental studies.
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Affiliation(s)
- M Ehret
- Université de Bordeaux, CNRS, CEA, Centre Lasers Intenses et Applications (CELIA), UMR 5107, Talence, France
- Institut für Kernphysik, Technische Universität Darmstadt, Darmstadt, Germany
| | - Yu Kochetkov
- National Research Nuclear University MEPhI, Moscow, Russian Federation
| | - Y Abe
- Graduate School of Engineering, Osaka University, Japan
- Institute of Laser Engineering, Osaka University, Japan
| | - K F F Law
- Institute of Laser Engineering, Osaka University, Japan
| | - N Bukharskii
- National Research Nuclear University MEPhI, Moscow, Russian Federation
| | - V Stepanischev
- National Research Nuclear University MEPhI, Moscow, Russian Federation
| | - S Fujioka
- Institute of Laser Engineering, Osaka University, Japan
| | - E d'Humières
- Université de Bordeaux, CNRS, CEA, Centre Lasers Intenses et Applications (CELIA), UMR 5107, Talence, France
| | - B Zielbauer
- Plasma Physik/PHELIX, GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, Germany
| | - V Bagnoud
- Plasma Physik/PHELIX, GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, Germany
| | - G Schaumann
- Institut für Kernphysik, Technische Universität Darmstadt, Darmstadt, Germany
| | - T Somekawa
- Institute of Laser Engineering, Osaka University, Japan
- Institute for Laser Technology, 1-8-4 Utsubohonmachi, Osaka 550-0004, Japan
| | - M Roth
- Institut für Kernphysik, Technische Universität Darmstadt, Darmstadt, Germany
| | - V Tikhonchuk
- Université de Bordeaux, CNRS, CEA, Centre Lasers Intenses et Applications (CELIA), UMR 5107, Talence, France
- ELI-Beamlines, Institute of Physics Academy of Sciences of the Czech Republic, Dolní Břežany, Czech Republic
| | - J J Santos
- Université de Bordeaux, CNRS, CEA, Centre Lasers Intenses et Applications (CELIA), UMR 5107, Talence, France
| | - Ph Korneev
- National Research Nuclear University MEPhI, Moscow, Russian Federation
- P. N. Lebedev Physical Institute of RAS, Moscow, Russian Federation
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Swain K, Mahalik SS, Kundu M. Laser cluster interaction in ambient magnetic fields for accelerating electrons in two stages without external injection. Sci Rep 2022; 12:11256. [PMID: 35787644 PMCID: PMC9253368 DOI: 10.1038/s41598-022-14816-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2022] [Accepted: 06/13/2022] [Indexed: 11/09/2022] Open
Abstract
In the few-cycle pulse regime of laser-cluster interaction (intensity [Formula: see text], wavelength [Formula: see text] nm), laser absorption is mostly collisionless and may happen via anharmonic resonance (AHR) process in the overdense (cluster) plasma potential. Many experiments, theory and simulation show average absorbed energy per cluster-electron ([Formula: see text]) close to the electron's ponderomotive energy ([Formula: see text]) in the collisionless regime. In this work, by simple rigid sphere model (RSM) and detailed particle-in-cell (PIC) simulation, we show enhanced [Formula: see text] 30-70[Formula: see text]-a 15-30 fold increase-with an external (crossed) magnetic field near the electron-cyclotron resonance (ECR). Due to relativistic mass increase, electrons quickly deviate from the standard (non-relativistic) ECR, but time-dependent relativistic-ECR (RECR) happens which also contributes to enhanced [Formula: see text]. Here laser is coupled to electrons in two stages, i.e, AHR and ECR/RECR. To probe further we retrieve the phase-difference [Formula: see text] between the driving electric field and corresponding velocity component for each electron (in PIC and RSM). We find absorption by electron via AHR happens in a very short interval [Formula: see text] for less than half a laser period where [Formula: see text] remains close to [Formula: see text] (necessary condition for maximum laser absorption) and then [Formula: see text] drops to its initial [Formula: see text] (meaning no absorption) after such short-lived AHR. On the contrary, auxiliary magnetic field near the ECR modifies AHR scenario inside the cluster and also helps maintaining the required phase [Formula: see text] for the liberated cluster-electron accompanied by frequency matching for ECR/RECR for a prolonged [Formula: see text] (which covers 50-60% of the laser pulse through pulse maxima) even after AHR-leading to jump in [Formula: see text] 30-70[Formula: see text]. We note that to realize the second stage of enhanced energy coupling via ECR/RECR, the first stage via AHR is necessary.
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Affiliation(s)
- Kalyani Swain
- Institute for Plasma Research, Bhat, Gandhinagar, 382 428, India.,Homi Bhabha National Institute, Training School Complex, Anushaktinagar, Mumbai, 400094, India
| | - Sagar Sekhar Mahalik
- Institute for Plasma Research, Bhat, Gandhinagar, 382 428, India.,Homi Bhabha National Institute, Training School Complex, Anushaktinagar, Mumbai, 400094, India
| | - Mrityunjay Kundu
- Institute for Plasma Research, Bhat, Gandhinagar, 382 428, India. .,Homi Bhabha National Institute, Training School Complex, Anushaktinagar, Mumbai, 400094, India.
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Gu YJ, Murakami M. Magnetic field amplification driven by the gyro motion of charged particles. Sci Rep 2021; 11:23592. [PMID: 34880323 PMCID: PMC8654870 DOI: 10.1038/s41598-021-02944-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Accepted: 11/23/2021] [Indexed: 11/09/2022] Open
Abstract
Spontaneous magnetic field generation plays important role in laser-plasma interactions. Strong quasi-static magnetic fields affect the thermal conductivity and the plasma dynamics, particularly in the case of ultra intense laser where the magnetic part of Lorentz force becomes as significant as the electric part. Kinetic simulations of giga-gauss magnetic field amplification via a laser irradiated microtube structure reveal the dynamics of charged particle implosions and the mechanism of magnetic field growth. A giga-gauss magnetic field is generated and amplified with the opposite polarity to the seed magnetic field. The spot size of the field is comparable to the laser wavelength, and the lifetime is hundreds of femtoseconds. An analytical model is presented to explain the underlying physics. This study should aid in designing future experiments.
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Affiliation(s)
- Yan-Jun Gu
- Institute of Laser Engineering, Osaka University, Suita, Osaka, 565-0871, Japan.
| | - Masakatsu Murakami
- grid.136593.b0000 0004 0373 3971Institute of Laser Engineering, Osaka University, Suita, Osaka 565-0871 Japan
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Mao H, Weichman K, Gong Z, Ditmire T, Quevedo H, Arefiev A. Emission of electromagnetic waves as a stopping mechanism for nonlinear collisionless ionization waves in a high-β regime. Phys Rev E 2021; 103:023209. [PMID: 33735976 DOI: 10.1103/physreve.103.023209] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Accepted: 01/22/2021] [Indexed: 11/07/2022]
Abstract
A high energy density plasma embedded in a neutral gas is able to launch an outward-propagating nonlinear electrostatic ionization wave that traps energetic electrons. The trapping maintains a strong sheath electric field, enabling rapid and long-lasting wave propagation aided by field ionization. Using 1D3V kinetic simulations, we examine the propagation of the ionization wave in the presence of a transverse MG-level magnetic field with the objective to identify qualitative changes in a regime where the initial thermal pressure of the plasma exceeds the pressure of the magnetic field (β>1). Our key finding is that the magnetic field stops the propagation by causing the energetic electrons sustaining the wave to lose their energy by emitting an electromagnetic wave. The emission is accompanied by the magnetic field expulsion from the plasma and an increased electron loss from the trapping wave structure. The described effect provides a mechanism mitigating rapid plasma expansion for those applications that involve an embedded plasma, such as high-flux neutron production from laser-irradiated deuterium gas jets.
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Affiliation(s)
- Haotian Mao
- Department of Mechanical and Aerospace Engineering, University of California at San Diego, La Jolla, California 92093, USA
| | - Kathleen Weichman
- Department of Mechanical and Aerospace Engineering, University of California at San Diego, La Jolla, California 92093, USA and University of Rochester, Laboratory for Laser Energetics, Rochester, New York 14623, USA
| | - Zheng Gong
- Center for High Energy Density Science, University of Texas at Austin, Texas 78712, USA and School of Physics, Peking University, 100871, People's Republic of China
| | - Todd Ditmire
- Center for High Energy Density Science, University of Texas at Austin, Texas 78712, USA
| | - Hernan Quevedo
- Center for High Energy Density Science, University of Texas at Austin, Texas 78712, USA
| | - Alexey Arefiev
- Department of Mechanical and Aerospace Engineering, University of California at San Diego, La Jolla, California 92093, USA and Center for Energy Research, University of California at San Diego, La Jolla, California 92037, USA
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