1
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Wan Y, Tata S, Seemann O, Levine EY, Kroupp E, Malka V. Real-time visualization of the laser-plasma wakefield dynamics. SCIENCE ADVANCES 2024; 10:eadj3595. [PMID: 38306435 PMCID: PMC10836718 DOI: 10.1126/sciadv.adj3595] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Accepted: 01/03/2024] [Indexed: 02/04/2024]
Abstract
The exploration of new acceleration mechanisms for compactly delivering high-energy particle beams has gained great attention in recent years. One alternative that has attracted particular interest is the plasma-based wakefield accelerator, which is capable of sustaining accelerating fields that are more than three orders of magnitude larger than those of conventional radio-frequency accelerators. In this device, acceleration is generated by plasma waves that propagate at nearly light speed, driven by intense lasers or charged particle beams. Here, we report on the direct visualization of the entire plasma wake dynamics by probing it with a femtosecond relativistic electron bunch. This includes the excitation of the laser wakefield, the increase of its amplitude, the electron injection, and the transition to the beam-driven plasma wakefield. These experimental observations provide first-hand valuable insights into the complex physics of laser beam-plasma interaction and demonstrate a powerful tool that can largely advance the development of plasma accelerators for real-time operation.
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Affiliation(s)
- Yang Wan
- Department of Physics of Complex Systems, Weizmann Institute of Science, Rehovot 7610001, Israel
- School of Physics, Zhengzhou University, Zhengzhou 450001, China
| | - Sheroy Tata
- Department of Physics of Complex Systems, Weizmann Institute of Science, Rehovot 7610001, Israel
| | - Omri Seemann
- Department of Physics of Complex Systems, Weizmann Institute of Science, Rehovot 7610001, Israel
| | - Eitan Y. Levine
- Department of Physics of Complex Systems, Weizmann Institute of Science, Rehovot 7610001, Israel
| | - Eyal Kroupp
- Department of Physics of Complex Systems, Weizmann Institute of Science, Rehovot 7610001, Israel
| | - Victor Malka
- Department of Physics of Complex Systems, Weizmann Institute of Science, Rehovot 7610001, Israel
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2
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Curcio A, Cianchi A, Costa G, Del Dotto A, Demurtas F, Ferrario M, Frías MDR, Galletti M, Pérez-Hernández JA, Gatti G. Reconstruction of lateral coherence and 2D emittance in plasma betatron X-ray sources. Sci Rep 2024; 14:1719. [PMID: 38243043 PMCID: PMC10799011 DOI: 10.1038/s41598-024-52231-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2023] [Accepted: 01/16/2024] [Indexed: 01/21/2024] Open
Abstract
X-ray sources have a strong social impact, being implemented for biomedical research, material and environmental sciences. Nowadays, compact and accessible sources are made using lasers. We report evidence of nontrivial spectral-angular correlations in a laser-driven betatron X-ray source. Furthermore, by angularly-resolved spectral measurements, we detect the signature of spatial phase modulations by the electron trajectories. This allows the lateral coherence function to be retrieved, leading to the evaluation of the coherence area of the source, determining its brightness. Finally, the proposed methodology allows the unprecedented reconstruction of the size of the X-ray source and the electron beam emittance in the two main emission planes in a single shot. This information will be of fundamental interest for user applications of new radiation sources.
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Affiliation(s)
| | - Alessandro Cianchi
- Department of Physics, Università di Roma Tor Vergata, Via Ricerca Scientifica 1, 00133, Rome, Italy
- INFN-Tor Vergata, Via Ricerca Scientifica 1, 00133, Rome, Italy
- NAST Centre, Via Ricerca Scientifica 1, 00133, Rome, Italy
| | - Gemma Costa
- INFN-LNF, via Enrico Fermi 40, 00044, Frascati, Rome, Italy
| | | | | | | | - Maria Dolores Rodríguez Frías
- Centro de Laseres Pulsados (CLPU), Edificio M5, Parque Científico, C/ Adaja 8, 37185, Villamayor, Salamanca, Spain
- Dpto. Física y Matemáticas, Universidad de Alcalá, Plaza de San Diego, s/n Alcalá de Henares, Madrid, Spain
| | - Mario Galletti
- Department of Physics, Università di Roma Tor Vergata, Via Ricerca Scientifica 1, 00133, Rome, Italy
- INFN-Tor Vergata, Via Ricerca Scientifica 1, 00133, Rome, Italy
- NAST Centre, Via Ricerca Scientifica 1, 00133, Rome, Italy
| | - José Antonio Pérez-Hernández
- Centro de Laseres Pulsados (CLPU), Edificio M5, Parque Científico, C/ Adaja 8, 37185, Villamayor, Salamanca, Spain
| | - Giancarlo Gatti
- Centro de Laseres Pulsados (CLPU), Edificio M5, Parque Científico, C/ Adaja 8, 37185, Villamayor, Salamanca, Spain
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3
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Han LQ, Cai J, Shou YR, Liu XD, Yu JQ, Yan XQ. Linear Breit-Wheeler process driven by compact lasers. Phys Rev E 2023; 108:055208. [PMID: 38115494 DOI: 10.1103/physreve.108.055208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Accepted: 11/02/2023] [Indexed: 12/21/2023]
Abstract
We report a proposal to observe the two-photon Breit-Wheeler process in plasma driven by compact lasers. A high-charge electron bunch can be generated from laser plasma wakefield acceleration when a tightly focused laser pulse propagates in a subcritical density plasma. The electron bunch scatters with the laser pulse coming from the opposite direction and resulting in the emission of high brilliance x-ray pulses. In a three-dimensional particle-in-cell simulation with a laser pulse of ∼10 J, one could produce an x-ray pulse with a photon number higher than 3×10^{11} and brilliance above 1.6×10^{23} photons/s/mm^{2}/mrad^{2}/0.1%BW at 1 MeV. The x-ray pulses collide in the plasma and create more than 1.1×10^{5} electron-positron pairs per shot. It is also found that the positrons can be accelerated transversely by a transverse electric field generated in the plasma, which enables the safe detection in the direction away from the laser pulses. This proposal enables the observation of the linear Breit-Wheeler process in a compact device with a single shot.
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Affiliation(s)
- L Q Han
- Hunan Provincial Key Laboratory of High-Energy Scale Physics and Applications, School of Physics and Electronics, Hunan University, Changsha, 410082, China
| | - J Cai
- State Key Laboratory of Nuclear Physics and Technology, and Key Laboratory of HEDP of the Ministry of Education, CAPT, Peking University, Beijing, 100871, China
| | - Y R Shou
- Center for Relativistic Laser Science, Institute for Basic Science, Gwangju, 61005, Republic of Korea
| | - X D Liu
- Hunan Provincial Key Laboratory of High-Energy Scale Physics and Applications, School of Physics and Electronics, Hunan University, Changsha, 410082, China
| | - J Q Yu
- Hunan Provincial Key Laboratory of High-Energy Scale Physics and Applications, School of Physics and Electronics, Hunan University, Changsha, 410082, China
| | - X Q Yan
- State Key Laboratory of Nuclear Physics and Technology, and Key Laboratory of HEDP of the Ministry of Education, CAPT, Peking University, Beijing, 100871, China
- Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan, Shanxi, 030006, China
- Guangdong Laser Plasma Institute, Guangzhou, 510540, China
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4
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Kaluza MC. Unveiling the inner structure of electron pulses generated from a laser-wakefield accelerator. LIGHT, SCIENCE & APPLICATIONS 2023; 12:225. [PMID: 37696783 PMCID: PMC10495313 DOI: 10.1038/s41377-023-01269-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/13/2023]
Abstract
A novel diagnostic method has been used to gain deeper insight into the transverse structure and its evolution of electron pulses generated from a laser-wakefield accelerator.
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Affiliation(s)
- Malte C Kaluza
- Institute of Optics and Quantum Electronics, Max-Wien-Platz 1, 07743, Jena, Germany.
- Helmholtz-Institute Jena, Fröbelstieg 3, 07743, Jena, Germany.
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5
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Wan Y, Tata S, Seemann O, Levine EY, Smartsev S, Kroupp E, Malka V. Femtosecond electron microscopy of relativistic electron bunches. LIGHT, SCIENCE & APPLICATIONS 2023; 12:116. [PMID: 37164977 PMCID: PMC10172298 DOI: 10.1038/s41377-023-01142-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Revised: 03/15/2023] [Accepted: 03/30/2023] [Indexed: 05/12/2023]
Abstract
The development of plasma-based accelerators has enabled the generation of very high brightness electron bunches of femtosecond duration, micrometer size and ultralow emittance, crucial for emerging applications including ultrafast detection in material science, laboratory-scale free-electron lasers and compact colliders for high-energy physics. The precise characterization of the initial bunch parameters is critical to the ability to manipulate the beam properties for downstream applications. Proper diagnostic of such ultra-short and high charge density laser-plasma accelerated bunches, however, remains very challenging. Here we address this challenge with a novel technique we name as femtosecond ultrarelativistic electron microscopy, which utilizes an electron bunch from another laser-plasma accelerator as a probe. In contrast to conventional microscopy of using very low-energy electrons, the femtosecond duration and high electron energy of such a probe beam enable it to capture the ultra-intense space-charge fields of the investigated bunch and to reconstruct the charge distribution with very high spatiotemporal resolution, all in a single shot. In the experiment presented here we have used this technique to study the shape of a laser-plasma accelerated electron beam, its asymmetry due to the drive laser polarization, and its beam evolution as it exits the plasma. We anticipate that this method will significantly advance the understanding of complex beam-plasma dynamics and will also provide a powerful new tool for real-time optimization of plasma accelerators.
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Affiliation(s)
- Yang Wan
- Department of Physics of Complex Systems, Weizmann Institute of Science, Rehovot, 7610001, Israel.
| | - Sheroy Tata
- Department of Physics of Complex Systems, Weizmann Institute of Science, Rehovot, 7610001, Israel
| | - Omri Seemann
- Department of Physics of Complex Systems, Weizmann Institute of Science, Rehovot, 7610001, Israel
| | - Eitan Y Levine
- Department of Physics of Complex Systems, Weizmann Institute of Science, Rehovot, 7610001, Israel
| | - Slava Smartsev
- Department of Physics of Complex Systems, Weizmann Institute of Science, Rehovot, 7610001, Israel
| | - Eyal Kroupp
- Department of Physics of Complex Systems, Weizmann Institute of Science, Rehovot, 7610001, Israel
| | - Victor Malka
- Department of Physics of Complex Systems, Weizmann Institute of Science, Rehovot, 7610001, Israel
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6
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Bohlen S, Brümmer T, Grüner F, Lindstrøm CA, Meisel M, Staufer T, Streeter MJV, Veale MC, Wood JC, D'Arcy R, Põder K, Osterhoff J. In Situ Measurement of Electron Energy Evolution in a Laser-Plasma Accelerator. PHYSICAL REVIEW LETTERS 2022; 129:244801. [PMID: 36563240 DOI: 10.1103/physrevlett.129.244801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2021] [Revised: 07/22/2022] [Accepted: 10/12/2022] [Indexed: 06/17/2023]
Abstract
We report on a novel, noninvasive method applying Thomson scattering to measure the evolution of the electron beam energy inside a laser-plasma accelerator with high spatial resolution. The determination of the local electron energy enabled the in-situ detection of the acting acceleration fields without altering the final beam state. In this Letter we demonstrate that the accelerating fields evolve from (265±119) GV/m to (9±4) GV/m in a plasma density ramp. The presented data show excellent agreement with particle-in-cell simulations. This method provides new possibilities for detecting the dynamics of plasma-based accelerators and their optimization.
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Affiliation(s)
- S Bohlen
- Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
- Universität Hamburg and Center for Free-Electron Laser Science, Luruper Chaussee 149, 22761 Hamburg, Germany
| | - T Brümmer
- Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
| | - F Grüner
- Universität Hamburg and Center for Free-Electron Laser Science, Luruper Chaussee 149, 22761 Hamburg, Germany
| | - C A Lindstrøm
- Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
| | - M Meisel
- Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
- Universität Hamburg and Center for Free-Electron Laser Science, Luruper Chaussee 149, 22761 Hamburg, Germany
| | - T Staufer
- Universität Hamburg and Center for Free-Electron Laser Science, Luruper Chaussee 149, 22761 Hamburg, Germany
| | - M J V Streeter
- Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
- Centre for Plasma Physics, School of Mathematics and Physics, Queen's University Belfast, BT7 1NN, Belfast, United Kingdom
| | - M C Veale
- UKRI STFC, Rutherford Appleton Laboratory, Didcot, OX11 0QX, United Kingdom
| | - J C Wood
- Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
| | - R D'Arcy
- Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
| | - K Põder
- Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
| | - J Osterhoff
- Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
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7
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Hannasch A, Laso Garcia A, LaBerge M, Zgadzaj R, Köhler A, Couperus Cabadağ JP, Zarini O, Kurz T, Ferrari A, Molodtsova M, Naumann L, Cowan TE, Schramm U, Irman A, Downer MC. Compact spectroscopy of keV to MeV X-rays from a laser wakefield accelerator. Sci Rep 2021; 11:14368. [PMID: 34257331 PMCID: PMC8277848 DOI: 10.1038/s41598-021-93689-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Accepted: 06/22/2021] [Indexed: 11/24/2022] Open
Abstract
We reconstruct spectra of secondary X-rays from a tunable 250–350 MeV laser wakefield electron accelerator from single-shot X-ray depth-energy measurements in a compact (7.5 × 7.5 × 15 cm), modular X-ray calorimeter made of alternating layers of absorbing materials and imaging plates. X-rays range from few-keV betatron to few-MeV inverse Compton to > 100 MeV bremsstrahlung emission, and are characterized both individually and in mixtures. Geant4 simulations of energy deposition of single-energy X-rays in the stack generate an energy-vs-depth response matrix for a given stack configuration. An iterative reconstruction algorithm based on analytic models of betatron, inverse Compton and bremsstrahlung photon energy distributions then unfolds X-ray spectra, typically within a minute. We discuss uncertainties, limitations and extensions of both measurement and reconstruction methods.
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Affiliation(s)
- A Hannasch
- Department of Physics, The University of Texas at Austin, Austin, TX, 78712-1081, USA
| | - A Laso Garcia
- The Helmholtz-Zentrum Dresden-Rossendorf, Institute for Radiation Physics, 01328, Dresden, Germany
| | - M LaBerge
- Department of Physics, The University of Texas at Austin, Austin, TX, 78712-1081, USA.,The Helmholtz-Zentrum Dresden-Rossendorf, Institute for Radiation Physics, 01328, Dresden, Germany
| | - R Zgadzaj
- Department of Physics, The University of Texas at Austin, Austin, TX, 78712-1081, USA
| | - A Köhler
- The Helmholtz-Zentrum Dresden-Rossendorf, Institute for Radiation Physics, 01328, Dresden, Germany
| | - J P Couperus Cabadağ
- The Helmholtz-Zentrum Dresden-Rossendorf, Institute for Radiation Physics, 01328, Dresden, Germany
| | - O Zarini
- The Helmholtz-Zentrum Dresden-Rossendorf, Institute for Radiation Physics, 01328, Dresden, Germany
| | - T Kurz
- The Helmholtz-Zentrum Dresden-Rossendorf, Institute for Radiation Physics, 01328, Dresden, Germany.,Technische Universität Dresden, 01069, Dresden, Germany
| | - A Ferrari
- The Helmholtz-Zentrum Dresden-Rossendorf, Institute for Radiation Physics, 01328, Dresden, Germany
| | - M Molodtsova
- The Helmholtz-Zentrum Dresden-Rossendorf, Institute for Radiation Physics, 01328, Dresden, Germany.,Technische Universität Dresden, 01069, Dresden, Germany
| | - L Naumann
- The Helmholtz-Zentrum Dresden-Rossendorf, Institute for Radiation Physics, 01328, Dresden, Germany
| | - T E Cowan
- The Helmholtz-Zentrum Dresden-Rossendorf, Institute for Radiation Physics, 01328, Dresden, Germany.,Technische Universität Dresden, 01069, Dresden, Germany
| | - U Schramm
- The Helmholtz-Zentrum Dresden-Rossendorf, Institute for Radiation Physics, 01328, Dresden, Germany.,Technische Universität Dresden, 01069, Dresden, Germany
| | - A Irman
- The Helmholtz-Zentrum Dresden-Rossendorf, Institute for Radiation Physics, 01328, Dresden, Germany
| | - M C Downer
- Department of Physics, The University of Texas at Austin, Austin, TX, 78712-1081, USA.
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8
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San Miguel Claveria P, Adli E, Amorim LD, An W, Clayton CE, Corde S, Gessner S, Hogan MJ, Joshi C, Kononenko O, Litos M, Lu W, Marsh KA, Mori WB, O'Shea B, Raj G, Storey D, Vafaei-Najafabadi N, White G, Xu X, Yakimenko V. Betatron radiation and emittance growth in plasma wakefield accelerators. PHILOSOPHICAL TRANSACTIONS. SERIES A, MATHEMATICAL, PHYSICAL, AND ENGINEERING SCIENCES 2019; 377:20180173. [PMID: 31230577 PMCID: PMC6602914 DOI: 10.1098/rsta.2018.0173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Accepted: 03/20/2019] [Indexed: 06/09/2023]
Abstract
Beam-driven plasma wakefield acceleration (PWFA) has demonstrated significant progress during the past two decades of research. The new Facility for Advanced Accelerator Experimental Tests (FACET) II, currently under construction, will provide 10 GeV electron beams with unprecedented parameters for the next generation of PWFA experiments. In the context of the FACET II facility, we present simulation results on expected betatron radiation and its potential application to diagnose emittance preservation and hosing instability in the upcoming PWFA experiments. This article is part of the Theo Murphy meeting issue 'Directions in particle beam-driven plasma wakefield acceleration'.
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Affiliation(s)
- P. San Miguel Claveria
- LOA, ENSTA ParisTech, CNRS, Ecole Polytechnique, Institut Polytechnique de Paris, 91762 Palaiseau, France
| | - E. Adli
- University of Oslo, NO-0316 Oslo, Norway
| | - L. D. Amorim
- Stonybrook University, Stony Brook, NY 11794, USA
| | - W. An
- University of California Los Angeles, Los Angeles, CA 90095, USA
| | - C. E. Clayton
- University of California Los Angeles, Los Angeles, CA 90095, USA
| | - S. Corde
- LOA, ENSTA ParisTech, CNRS, Ecole Polytechnique, Institut Polytechnique de Paris, 91762 Palaiseau, France
| | | | - M. J. Hogan
- SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA
| | - C. Joshi
- University of California Los Angeles, Los Angeles, CA 90095, USA
| | - O. Kononenko
- LOA, ENSTA ParisTech, CNRS, Ecole Polytechnique, Institut Polytechnique de Paris, 91762 Palaiseau, France
| | - M. Litos
- University of Colorado Boulder, Boulder, CO 80309, USA
| | - W. Lu
- Tsinghua University, Beijing 10084, People's Republic of China
| | - K. A. Marsh
- University of California Los Angeles, Los Angeles, CA 90095, USA
| | - W. B. Mori
- University of California Los Angeles, Los Angeles, CA 90095, USA
| | - B. O'Shea
- SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA
| | - G. Raj
- LOA, ENSTA ParisTech, CNRS, Ecole Polytechnique, Institut Polytechnique de Paris, 91762 Palaiseau, France
| | - D. Storey
- SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA
| | | | - G. White
- SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA
| | - Xinlu Xu
- University of California Los Angeles, Los Angeles, CA 90095, USA
- SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA
| | - V. Yakimenko
- SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA
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9
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High-resolution phase-contrast imaging of biological specimens using a stable betatron X-ray source in the multiple-exposure mode. Sci Rep 2019; 9:7796. [PMID: 31127147 PMCID: PMC6534593 DOI: 10.1038/s41598-019-42834-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2018] [Accepted: 03/18/2019] [Indexed: 11/08/2022] Open
Abstract
Phase-contrast imaging using X-ray sources with high spatial coherence is an emerging tool in biology and material science. Much of this research is being done using large synchrotron facilities or relatively low-flux microfocus X-ray tubes. An alternative high-flux, ultra-short and high-spatial-coherence table-top X-ray source based on betatron motions of electrons in laser wakefield accelerators has the promise to produce high quality images. In previous phase-contrast imaging studies with betatron sources, single-exposure images with a spatial resolution of 6-70 μm were reported by using large-scale laser systems (60-200 TW). Furthermore, images obtained with multiple exposures tended to have a reduced contrast and resolution due to the shot-to-shot fluctuations. In this article, we demonstrate that a highly stable multiple-exposure betatron source, with an effective average source size of 5 μm, photon number and pointing jitters of <5% and spectral fluctuation of <10%, can be obtained by utilizing ionization injection in pure nitrogen plasma using a 30-40 TW laser. Using this source, high quality phase-contrast images of biological specimens with a 5-μm resolution are obtained for the first time. This work shows a way for the application of high resolution phase-contrast imaging with stable betatron sources using modest power, high repetition-rate lasers.
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10
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Reichwein L, Thomas J, Pukhov A. Two-dimensional structures of electron bunches in relativistic plasma cavities. Phys Rev E 2018; 98:013201. [PMID: 30110785 DOI: 10.1103/physreve.98.013201] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2018] [Indexed: 11/07/2022]
Abstract
The spatial structure of an ultralow-emittance electron bunch in a plasma wakefield blowout regime is studied. The full Liénard-Wiechert potentials are considered for mutual interparticle interactions in the framework of the equilibrium slice model. This model uses the quasistatic theory which allows one to solve the Liénard-Wiechert potentials without knowledge of the electrons' history. The equilibrium structure we find is similar to already observed hexagonal lattices but shows topological defects. Scaling laws for interparticle distances are obtained from numerical simulations and analytical estimations.
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Affiliation(s)
- Lars Reichwein
- Institut für Theoretische Physik I, Heinrich-Heine-Universität Düsseldorf, D-40225 Düsseldorf, Germany
| | - Johannes Thomas
- Institut für Theoretische Physik I, Heinrich-Heine-Universität Düsseldorf, D-40225 Düsseldorf, Germany
| | - Alexander Pukhov
- Institut für Theoretische Physik I, Heinrich-Heine-Universität Düsseldorf, D-40225 Düsseldorf, Germany
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11
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Cole JM, Wood JC, Lopes NC, Poder K, Abel RL, Alatabi S, Bryant JSJ, Jin A, Kneip S, Mecseki K, Symes DR, Mangles SPD, Najmudin Z. Laser-wakefield accelerators as hard x-ray sources for 3D medical imaging of human bone. Sci Rep 2015; 5:13244. [PMID: 26283308 PMCID: PMC5289072 DOI: 10.1038/srep13244] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2015] [Accepted: 07/20/2015] [Indexed: 12/22/2022] Open
Abstract
A bright μm-sized source of hard synchrotron x-rays (critical energy Ecrit > 30 keV) based on the betatron oscillations of laser wakefield accelerated electrons has been developed. The potential of this source for medical imaging was demonstrated by performing micro-computed tomography of a human femoral trabecular bone sample, allowing full 3D reconstruction to a resolution below 50 μm. The use of a 1 cm long wakefield accelerator means that the length of the beamline (excluding the laser) is dominated by the x-ray imaging distances rather than the electron acceleration distances. The source possesses high peak brightness, which allows each image to be recorded with a single exposure and reduces the time required for a full tomographic scan. These properties make this an interesting laboratory source for many tomographic imaging applications.
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Affiliation(s)
- J M Cole
- The John Adams Institute for Accelerator Science, Blackett Laboratory, Imperial College London, London SW7 2BZ, UK
| | - J C Wood
- The John Adams Institute for Accelerator Science, Blackett Laboratory, Imperial College London, London SW7 2BZ, UK
| | - N C Lopes
- 1] The John Adams Institute for Accelerator Science, Blackett Laboratory, Imperial College London, London SW7 2BZ, UK [2] GoLP, Instituto de Plasmas e Fusão Nuclear, Instituto Superior Técnico, Universidade de Lisboa, 1049-001, Portugal
| | - K Poder
- The John Adams Institute for Accelerator Science, Blackett Laboratory, Imperial College London, London SW7 2BZ, UK
| | - R L Abel
- Department of Surgery and Cancer, MSk Laboratory, Charing Cross Hospital, Imperial College London, London W6 8RF, UK
| | - S Alatabi
- The John Adams Institute for Accelerator Science, Blackett Laboratory, Imperial College London, London SW7 2BZ, UK
| | - J S J Bryant
- The John Adams Institute for Accelerator Science, Blackett Laboratory, Imperial College London, London SW7 2BZ, UK
| | - A Jin
- Department of Mechanical Engineering, City and Guilds Building, Imperial College London, London SW7 2AZ, UK
| | - S Kneip
- The John Adams Institute for Accelerator Science, Blackett Laboratory, Imperial College London, London SW7 2BZ, UK
| | - K Mecseki
- The John Adams Institute for Accelerator Science, Blackett Laboratory, Imperial College London, London SW7 2BZ, UK
| | - D R Symes
- Central Laser Facility, Rutherford Appleton Laboratory, Didcot OX11 0QX, UK
| | - S P D Mangles
- The John Adams Institute for Accelerator Science, Blackett Laboratory, Imperial College London, London SW7 2BZ, UK
| | - Z Najmudin
- The John Adams Institute for Accelerator Science, Blackett Laboratory, Imperial College London, London SW7 2BZ, UK
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12
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Sävert A, Mangles SPD, Schnell M, Siminos E, Cole JM, Leier M, Reuter M, Schwab MB, Möller M, Poder K, Jäckel O, Paulus GG, Spielmann C, Skupin S, Najmudin Z, Kaluza MC. Direct Observation of the Injection Dynamics of a Laser Wakefield Accelerator Using Few-Femtosecond Shadowgraphy. PHYSICAL REVIEW LETTERS 2015; 115:055002. [PMID: 26274425 DOI: 10.1103/physrevlett.115.055002] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2014] [Indexed: 06/04/2023]
Abstract
We present few-femtosecond shadowgraphic snapshots taken during the nonlinear evolution of the plasma wave in a laser wakefield accelerator with transverse synchronized few-cycle probe pulses. These snapshots can be directly associated with the electron density distribution within the plasma wave and give quantitative information about its size and shape. Our results show that self-injection of electrons into the first plasma-wave period is induced by a lengthening of the first plasma period. Three-dimensional particle-in-cell simulations support our observations.
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Affiliation(s)
- A Sävert
- Institut für Optik und Quantenelektronik, Abbe-Center of Photonics, Friedrich-Schiller-Universität, 07743 Jena, Germany
| | - S P D Mangles
- The John Adams Institute for Accelerator Science, The Blackett Laboratory, Imperial College London, London SW7 2AZ, United Kingdom
| | - M Schnell
- Institut für Optik und Quantenelektronik, Abbe-Center of Photonics, Friedrich-Schiller-Universität, 07743 Jena, Germany
| | - E Siminos
- Max Planck Institute for the Physics of Complex Systems, 01187 Dresden, Germany
| | - J M Cole
- The John Adams Institute for Accelerator Science, The Blackett Laboratory, Imperial College London, London SW7 2AZ, United Kingdom
| | - M Leier
- Institut für Optik und Quantenelektronik, Abbe-Center of Photonics, Friedrich-Schiller-Universität, 07743 Jena, Germany
| | - M Reuter
- Institut für Optik und Quantenelektronik, Abbe-Center of Photonics, Friedrich-Schiller-Universität, 07743 Jena, Germany
- Helmholtz-Institut Jena, Friedrich-Schiller-Universität, 07743 Jena, Germany
| | - M B Schwab
- Institut für Optik und Quantenelektronik, Abbe-Center of Photonics, Friedrich-Schiller-Universität, 07743 Jena, Germany
| | - M Möller
- Institut für Optik und Quantenelektronik, Abbe-Center of Photonics, Friedrich-Schiller-Universität, 07743 Jena, Germany
| | - K Poder
- The John Adams Institute for Accelerator Science, The Blackett Laboratory, Imperial College London, London SW7 2AZ, United Kingdom
| | - O Jäckel
- Helmholtz-Institut Jena, Friedrich-Schiller-Universität, 07743 Jena, Germany
| | - G G Paulus
- Institut für Optik und Quantenelektronik, Abbe-Center of Photonics, Friedrich-Schiller-Universität, 07743 Jena, Germany
- Helmholtz-Institut Jena, Friedrich-Schiller-Universität, 07743 Jena, Germany
| | - C Spielmann
- Institut für Optik und Quantenelektronik, Abbe-Center of Photonics, Friedrich-Schiller-Universität, 07743 Jena, Germany
- Helmholtz-Institut Jena, Friedrich-Schiller-Universität, 07743 Jena, Germany
| | - S Skupin
- Univ. Bordeaux-CNRS-CEA, Centre Lasers Intense et Applications, UMR 5107, 33405 Talence, France
| | - Z Najmudin
- The John Adams Institute for Accelerator Science, The Blackett Laboratory, Imperial College London, London SW7 2AZ, United Kingdom
| | - M C Kaluza
- Institut für Optik und Quantenelektronik, Abbe-Center of Photonics, Friedrich-Schiller-Universität, 07743 Jena, Germany
- Helmholtz-Institut Jena, Friedrich-Schiller-Universität, 07743 Jena, Germany
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13
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Oppelt M, Baumann M, Bergmann R, Beyreuther E, Brüchner K, Hartmann J, Karsch L, Krause M, Laschinsky L, Leßmann E, Nicolai M, Reuter M, Richter C, Sävert A, Schnell M, Schürer M, Woithe J, Kaluza M, Pawelke J. Comparison study of in vivo dose response to laser-driven versus conventional electron beam. RADIATION AND ENVIRONMENTAL BIOPHYSICS 2015; 54:155-166. [PMID: 25600561 DOI: 10.1007/s00411-014-0582-1] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2014] [Accepted: 12/20/2014] [Indexed: 06/04/2023]
Abstract
The long-term goal to integrate laser-based particle accelerators into radiotherapy clinics not only requires technological development of high-intensity lasers and new techniques for beam detection and dose delivery, but also characterization of the biological consequences of this new particle beam quality, i.e. ultra-short, ultra-intense pulses. In the present work, we describe successful in vivo experiments with laser-driven electron pulses by utilization of a small tumour model on the mouse ear for the human squamous cell carcinoma model FaDu. The already established in vitro irradiation technology at the laser system JETI was further enhanced for 3D tumour irradiation in vivo in terms of beam transport, beam monitoring, dose delivery and dosimetry in order to precisely apply a prescribed dose to each tumour in full-scale radiobiological experiments. Tumour growth delay was determined after irradiation with doses of 3 and 6 Gy by laser-accelerated electrons. Reference irradiation was performed with continuous electron beams at a clinical linear accelerator in order to both validate the dedicated dosimetry employed for laser-accelerated JETI electrons and above all review the biological results. No significant difference in radiation-induced tumour growth delay was revealed for the two investigated electron beams. These data provide evidence that the ultra-high dose rate generated by laser acceleration does not impact the biological effectiveness of the particles.
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Affiliation(s)
- Melanie Oppelt
- OncoRay - National Center for Radiation Research in Oncology, Technische Universität Dresden, Dresden, Germany,
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14
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Brüchner K, Beyreuther E, Baumann M, Krause M, Oppelt M, Pawelke J. Establishment of a small animal tumour model for in vivo studies with low energy laser accelerated particles. Radiat Oncol 2014; 9:57. [PMID: 24533586 PMCID: PMC3936820 DOI: 10.1186/1748-717x-9-57] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2013] [Accepted: 02/10/2014] [Indexed: 12/12/2022] Open
Abstract
Background The long-term aim of developing a laser based acceleration of protons and ions towards clinical application requires not only substantial technological progress, but also the radiobiological characterization of the resulting ultra-short pulsed particle beams. Recent in vitro data showed similar effects of laser-accelerated versus "conventional" protons on clonogenic cell survival. As the proton energies currently achieved by laser driven acceleration are too low to penetrate standard tumour models on mouse legs, the aim of the present work was to establish a tumour model allowing for the penetration of low energy protons (~ 20 MeV) to further verify their effects in vivo. Methods KHT mouse sarcoma cells were injected subcutaneously in the right ear of NMRI (nu/nu) mice and the growing tumours were characterized with respect to growth parameters, histology and radiation response. In parallel, the laser system JETI was prepared for animal experimentation, i.e. a new irradiation setup was implemented and the laser parameters were carefully adjusted. Finally, a proof-of-principle experiment with laser accelerated electrons was performed to validate the tumour model under realistic conditions, i.e. altered environment and horizontal beam delivery. Results KHT sarcoma on mice ears showed a high take rate and continuous tumour growth after reaching a volume of ~ 5 mm3. The first irradiation experiment using laser accelerated electrons versus 200 kV X-rays was successfully performed and tumour growth delay was evaluated. Comparable tumour growth delay was found between X-ray and laser accelerated electron irradiation. Moreover, experimental influences, like anaesthesia and positioning at JETI, were found to be negligible. Conclusion A small animal tumour model suitable for the irradiation with low energy particles was established and validated at a laser based particle accelerator. Thus, the translation from in vitro to in vivo experimentation was for the first time realized allowing a broader preclinical validation of radiobiological characteristics and efficacy of laser driven particle accelerators in the future.
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Affiliation(s)
- Kerstin Brüchner
- Department of Radiation Oncology, University Hospital Carl Gustav Carus, TU Dresden, Fetscherstr, 74, 01307 Dresden, Germany.
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15
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Albert F, Pollock BB, Shaw JL, Marsh KA, Ralph JE, Chen YH, Alessi D, Pak A, Clayton CE, Glenzer SH, Joshi C. Angular dependence of betatron x-ray spectra from a laser-wakefield accelerator. PHYSICAL REVIEW LETTERS 2013; 111:235004. [PMID: 24476282 DOI: 10.1103/physrevlett.111.235004] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2013] [Indexed: 06/03/2023]
Abstract
We present the first measurements of the angular dependence of the betatron x-ray spectrum produced by electrons inside the cavity of a laser-wakefield accelerator. Electrons accelerated up to 300 MeV energies produce a beam of broadband, forward-directed betatron x-ray radiation extending up to 80 keV. The angular resolved spectrum from an image plate-based spectrometer with differential filtering provides data in a single laser shot. The simultaneous spectral and spatial x-ray analysis allows for a three-dimensional reconstruction of electron trajectories with micrometer resolution, and we find that the angular dependence of the x-ray spectrum is showing strong evidence of anisotropic electron trajectories.
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Affiliation(s)
- F Albert
- Lawrence Livermore National Laboratory, NIF and Photon Sciences, 7000 East Avenue, Livermore California 94550, USA
| | - B B Pollock
- Lawrence Livermore National Laboratory, NIF and Photon Sciences, 7000 East Avenue, Livermore California 94550, USA
| | - J L Shaw
- Department of Electrical Engineering, University of California, Los Angeles California 90095, USA
| | - K A Marsh
- Department of Electrical Engineering, University of California, Los Angeles California 90095, USA
| | - J E Ralph
- Lawrence Livermore National Laboratory, NIF and Photon Sciences, 7000 East Avenue, Livermore California 94550, USA
| | - Y-H Chen
- Lawrence Livermore National Laboratory, NIF and Photon Sciences, 7000 East Avenue, Livermore California 94550, USA
| | - D Alessi
- Lawrence Livermore National Laboratory, NIF and Photon Sciences, 7000 East Avenue, Livermore California 94550, USA
| | - A Pak
- Lawrence Livermore National Laboratory, NIF and Photon Sciences, 7000 East Avenue, Livermore California 94550, USA
| | - C E Clayton
- Department of Electrical Engineering, University of California, Los Angeles California 90095, USA
| | - S H Glenzer
- SLAC National Accelerator Laboratory, Stanford California 94309, USA
| | - C Joshi
- Department of Electrical Engineering, University of California, Los Angeles California 90095, USA
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16
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Optical control of hard X-ray polarization by electron injection in a laser wakefield accelerator. Nat Commun 2013; 4:2421. [PMID: 24026068 PMCID: PMC3778521 DOI: 10.1038/ncomms3421] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2013] [Accepted: 08/08/2013] [Indexed: 12/02/2022] Open
Abstract
Laser-plasma particle accelerators could provide more compact sources of high-energy radiation than conventional accelerators. Moreover, because they deliver radiation in femtosecond pulses, they could improve the time resolution of X-ray absorption techniques. Here we show that we can measure and control the polarization of ultra-short, broad-band keV photon pulses emitted from a laser-plasma-based betatron source. The electron trajectories and hence the polarization of the emitted X-rays are experimentally controlled by the pulse-front tilt of the driving laser pulses. Particle-in-cell simulations show that an asymmetric plasma wave can be driven by a tilted pulse front and a non-symmetric intensity distribution of the focal spot. Both lead to a notable off-axis electron injection followed by collective electron–betatron oscillations. We expect that our method for an all-optical steering is not only useful for plasma-based X-ray sources but also has significance for future laser-based particle accelerators. Radiation sources driven by laser-plasma accelerators have the potential to produce shorter bursts of radiation at lower cost than those based on conventional accelerators. Schnell et al. demonstrate the ability to control the polarization of the bursts of hard X-rays produced by such a source.
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17
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Chen S, Powers ND, Ghebregziabher I, Maharjan CM, Liu C, Golovin G, Banerjee S, Zhang J, Cunningham N, Moorti A, Clarke S, Pozzi S, Umstadter DP. MeV-energy x rays from inverse compton scattering with laser-wakefield accelerated electrons. PHYSICAL REVIEW LETTERS 2013; 110:155003. [PMID: 25167278 DOI: 10.1103/physrevlett.110.155003] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2012] [Indexed: 06/03/2023]
Abstract
We report the generation of MeV x rays using an undulator and accelerator that are both driven by the same 100-terawatt laser system. The laser pulse driving the accelerator and the scattering laser pulse are independently optimized to generate a high energy electron beam (>200 MeV) and maximize the output x-ray brightness. The total x-ray photon number was measured to be ∼1×10(7), the source size was 5 μm, and the beam divergence angle was ∼10 mrad. The x-ray photon energy, peaked at 1 MeV (reaching up to 4 MeV), exceeds the thresholds of fundamental nuclear processes (e.g., pair production and photodisintegration).
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Affiliation(s)
- S Chen
- Department of Physics and Astronomy, University of Nebraska, Lincoln, Nebraska 68588, USA
| | - N D Powers
- Department of Physics and Astronomy, University of Nebraska, Lincoln, Nebraska 68588, USA
| | - I Ghebregziabher
- Department of Physics and Astronomy, University of Nebraska, Lincoln, Nebraska 68588, USA
| | - C M Maharjan
- Department of Physics and Astronomy, University of Nebraska, Lincoln, Nebraska 68588, USA
| | - C Liu
- Department of Physics and Astronomy, University of Nebraska, Lincoln, Nebraska 68588, USA
| | - G Golovin
- Department of Physics and Astronomy, University of Nebraska, Lincoln, Nebraska 68588, USA
| | - S Banerjee
- Department of Physics and Astronomy, University of Nebraska, Lincoln, Nebraska 68588, USA
| | - J Zhang
- Department of Physics and Astronomy, University of Nebraska, Lincoln, Nebraska 68588, USA
| | - N Cunningham
- Department of Physics and Astronomy, University of Nebraska, Lincoln, Nebraska 68588, USA
| | - A Moorti
- Department of Physics and Astronomy, University of Nebraska, Lincoln, Nebraska 68588, USA
| | - S Clarke
- Department of Nuclear Engineering and Radiological Sciences, University of Michigan, Ann Arbor, Michigan 48109, USA
| | - S Pozzi
- Department of Nuclear Engineering and Radiological Sciences, University of Michigan, Ann Arbor, Michigan 48109, USA
| | - D P Umstadter
- Department of Physics and Astronomy, University of Nebraska, Lincoln, Nebraska 68588, USA
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18
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Yu TP, Pukhov A, Sheng ZM, Liu F, Shvets G. Bright betatronlike x rays from radiation pressure acceleration of a mass-limited foil target. PHYSICAL REVIEW LETTERS 2013; 110:045001. [PMID: 25166170 DOI: 10.1103/physrevlett.110.045001] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2012] [Indexed: 06/03/2023]
Abstract
By using multidimensional particle-in-cell simulations, we study the electromagnetic emission from radiation pressure acceleration of ultrathin mass-limited foils. When a circularly polarized laser pulse irradiates the foil, the laser radiation pressure pushes the foil forward as a whole. The outer wings of the pulse continue to propagate and act as a natural undulator. Electrons move together with ions longitudinally but oscillate around the latter transversely, forming a self-organized helical electron bunch. When the electron oscillation frequency coincides with the laser frequency as witnessed by the electron, betatronlike resonance occurs. The emitted x rays by the resonant electrons have high brightness, short durations, and broad band ranges which may have diverse applications.
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Affiliation(s)
- Tong-Pu Yu
- Department of Physics, National University of Defense Technology, Changsha 410073, China and State Key Laboratory of High Performance Computing, National University of Defense Technology, Changsha 410073, China and Institut für Theoretische Physik I, Heinrich-Heine-Universität Düsseldorf, 40225 Düsseldorf, Germany
| | - Alexander Pukhov
- Institut für Theoretische Physik I, Heinrich-Heine-Universität Düsseldorf, 40225 Düsseldorf, Germany
| | - Zheng-Ming Sheng
- Key Laboratory for Laser Plasmas (MoE) and Department of Physics, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Feng Liu
- Key Laboratory for Laser Plasmas (MoE) and Department of Physics, Shanghai Jiao Tong University, Shanghai 200240, China and Institut für Laser-und Plasmaphysik, Heinrich-Heine-Universität Düsseldorf, 40225 Düsseldorf, Germany
| | - Gennady Shvets
- Department of Physics, The University of Texas at Austin, Austin, Texas 78712, USA
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