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Fedeli L, Formenti A, Cialfi L, Pazzaglia A, Passoni M. Ultra-intense laser interaction with nanostructured near-critical plasmas. Sci Rep 2018; 8:3834. [PMID: 29497130 PMCID: PMC5832818 DOI: 10.1038/s41598-018-22147-6] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2017] [Accepted: 02/06/2018] [Indexed: 11/09/2022] Open
Abstract
Near-critical plasmas irradiated at ultra-high laser intensities (I > 1018W/cm2) allow to improve the performances of laser-driven particle and radiation sources and to explore scenarios of great astrophysical interest. Near-critical plasmas with controlled properties can be obtained with nanostructured low-density materials. By means of 3D Particle-In-Cell simulations, we investigate how realistic nanostructures influence the interaction of an ultra-intense laser with a plasma having a near-critical average electron density. We find that the presence of a nanostructure strongly reduces the effect of pulse polarization and enhances the energy absorbed by the ion population, while generally leading to a significant decrease of the electron temperature with respect to a homogeneous near-critical plasma. We also observe an effect of the nanostructure morphology. These results are relevant both for a fundamental understanding and for the foreseen applications of laser-plasma interaction in the near-critical regime.
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Affiliation(s)
- Luca Fedeli
- Department of Energy, Politecnico di Milano, Via Ponzio 34/3, Milano, 20133, Italy.
| | - Arianna Formenti
- Department of Energy, Politecnico di Milano, Via Ponzio 34/3, Milano, 20133, Italy
| | - Lorenzo Cialfi
- Department of Energy, Politecnico di Milano, Via Ponzio 34/3, Milano, 20133, Italy
| | - Andrea Pazzaglia
- Department of Energy, Politecnico di Milano, Via Ponzio 34/3, Milano, 20133, Italy
| | - Matteo Passoni
- Department of Energy, Politecnico di Milano, Via Ponzio 34/3, Milano, 20133, Italy
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Homma H, Kadota H, Hosokawa H, Nagata M, Fujimura T, Nagai K, Nakai M, Norimatsu T, Azechi H. Recent Developments in Fabrication of New Conceptual Gold Cone and Machining of Polystyrene Shell for Fast Ignition Target. FUSION SCIENCE AND TECHNOLOGY 2017. [DOI: 10.13182/fst11-a11537] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- H. Homma
- Osaka University, Institute of Laser Engineering, 2-6 Yamada-oka, Suita, Osaka 565-0871, Japan
| | - H. Kadota
- Osaka University, Institute of Laser Engineering, 2-6 Yamada-oka, Suita, Osaka 565-0871, Japan
| | - H. Hosokawa
- Osaka University, Institute of Laser Engineering, 2-6 Yamada-oka, Suita, Osaka 565-0871, Japan
| | - M. Nagata
- Osaka University, Institute of Laser Engineering, 2-6 Yamada-oka, Suita, Osaka 565-0871, Japan
| | - T. Fujimura
- Osaka University, Institute of Laser Engineering, 2-6 Yamada-oka, Suita, Osaka 565-0871, Japan
| | - K. Nagai
- Tokyo Institute of Technology, Chemical Resources Laboratory, 4259 Nagatsuta Midori-ku, Yokohama 226-8503, Japan
| | - M. Nakai
- Osaka University, Institute of Laser Engineering, 2-6 Yamada-oka, Suita, Osaka 565-0871, Japan
| | - T. Norimatsu
- Osaka University, Institute of Laser Engineering, 2-6 Yamada-oka, Suita, Osaka 565-0871, Japan
| | - H. Azechi
- Osaka University, Institute of Laser Engineering, 2-6 Yamada-oka, Suita, Osaka 565-0871, Japan
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Kitagawa Y, Mori Y, Komeda O, Ishii K, Hanayama R, Fujita K, Okihara S, Sekine T, Satoh N, Kurita T, Takagi M, Watari T, Kawashima T, Kan H, Nishimura Y, Sunahara A, Sentoku Y, Nakamura N, Kondo T, Fujine M, Azuma H, Motohiro T, Hioki T, Kakeno M, Miura E, Arikawa Y, Nagai T, Abe Y, Ozaki S, Noda A. Direct heating of a laser-imploded core by ultraintense laser-driven ions. PHYSICAL REVIEW LETTERS 2015; 114:195002. [PMID: 26024175 DOI: 10.1103/physrevlett.114.195002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2013] [Indexed: 06/04/2023]
Abstract
A novel direct core heating fusion process is introduced, in which a preimploded core is predominantly heated by energetic ions driven by LFEX, an extremely energetic ultrashort pulse laser. Consequently, we have observed the D(d,n)^{3}He-reacted neutrons (DD beam-fusion neutrons) with the yield of 5×10^{8} n/4π sr. Examination of the beam-fusion neutrons verified that the ions directly collide with the core plasma. While the hot electrons heat the whole core volume, the energetic ions deposit their energies locally in the core, forming hot spots for fuel ignition. As evidenced in the spectrum, the process simultaneously excited thermal neutrons with the yield of 6×10^{7} n/4π sr, raising the local core temperature from 0.8 to 1.8 keV. A one-dimensional hydrocode STAR 1D explains the shell implosion dynamics including the beam fusion and thermal fusion initiated by fast deuterons and carbon ions. A two-dimensional collisional particle-in-cell code predicts the core heating due to resistive processes driven by hot electrons, and also the generation of fast ions, which could be an additional heating source when they reach the core. Since the core density is limited to 2 g/cm^{3} in the current experiment, neither hot electrons nor fast ions can efficiently deposit their energy and the neutron yield remains low. In future work, we will achieve the higher core density (>10 g/cm^{3}); then hot electrons could contribute more to the core heating via drag heating. Together with hot electrons, the ion contribution to fast ignition is indispensable for realizing high-gain fusion. By virtue of its core heating and ignition, the proposed scheme can potentially achieve high gain fusion.
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Affiliation(s)
- Y Kitagawa
- The Graduate School for the Creation of New Photonics Industries, Kurematsucho, 1955-1 Nishi-ku, Hamamatsu 431-1202 Japan
| | - Y Mori
- The Graduate School for the Creation of New Photonics Industries, Kurematsucho, 1955-1 Nishi-ku, Hamamatsu 431-1202 Japan
| | - O Komeda
- The Graduate School for the Creation of New Photonics Industries, Kurematsucho, 1955-1 Nishi-ku, Hamamatsu 431-1202 Japan
| | - K Ishii
- The Graduate School for the Creation of New Photonics Industries, Kurematsucho, 1955-1 Nishi-ku, Hamamatsu 431-1202 Japan
| | - R Hanayama
- The Graduate School for the Creation of New Photonics Industries, Kurematsucho, 1955-1 Nishi-ku, Hamamatsu 431-1202 Japan
| | - K Fujita
- The Graduate School for the Creation of New Photonics Industries, Kurematsucho, 1955-1 Nishi-ku, Hamamatsu 431-1202 Japan
| | - S Okihara
- The Graduate School for the Creation of New Photonics Industries, Kurematsucho, 1955-1 Nishi-ku, Hamamatsu 431-1202 Japan
| | - T Sekine
- Hamamatsu Photonics, K. K. Kurematsucho, 1820 Nishi-ku, Hamamatsu 431-1202, Japan
| | - N Satoh
- Hamamatsu Photonics, K. K. Kurematsucho, 1820 Nishi-ku, Hamamatsu 431-1202, Japan
| | - T Kurita
- Hamamatsu Photonics, K. K. Kurematsucho, 1820 Nishi-ku, Hamamatsu 431-1202, Japan
| | - M Takagi
- Hamamatsu Photonics, K. K. Kurematsucho, 1820 Nishi-ku, Hamamatsu 431-1202, Japan
| | - T Watari
- Hamamatsu Photonics, K. K. Kurematsucho, 1820 Nishi-ku, Hamamatsu 431-1202, Japan
| | - T Kawashima
- Hamamatsu Photonics, K. K. Kurematsucho, 1820 Nishi-ku, Hamamatsu 431-1202, Japan
| | - H Kan
- Hamamatsu Photonics, K. K. Kurematsucho, 1820 Nishi-ku, Hamamatsu 431-1202, Japan
| | - Y Nishimura
- Toyota Technical Development Corp., 1-21 Imae, Hanamoto-cho, Toyota, Aichi 470-0334, Japan
| | - A Sunahara
- Institute for Laser Technology, 1-8-4 Utsubo-honmachi, Nishi-ku, Osaka 550-0004, Japan
| | - Y Sentoku
- Department of Physics, University of Nevada, Reno 1664 N Virginia Street, Reno, Nevada 89557, USA
| | - N Nakamura
- Advanced Material Engineering Division, TOYOTA Motor Corporation, 1200, Mishuku, Susono, Shizuoka 410-1193, Japan
| | - T Kondo
- Advanced Material Engineering Division, TOYOTA Motor Corporation, 1200, Mishuku, Susono, Shizuoka 410-1193, Japan
| | - M Fujine
- Advanced Material Engineering Division, TOYOTA Motor Corporation, 1200, Mishuku, Susono, Shizuoka 410-1193, Japan
| | - H Azuma
- TOYOTA Central Research and Development Laboratories, Inc., 41-1 Yokomichi, Nagakute-cho, Aichi, Japan
| | - T Motohiro
- TOYOTA Central Research and Development Laboratories, Inc., 41-1 Yokomichi, Nagakute-cho, Aichi, Japan
| | - T Hioki
- TOYOTA Central Research and Development Laboratories, Inc., 41-1 Yokomichi, Nagakute-cho, Aichi, Japan
| | - M Kakeno
- TOYOTA Central Research and Development Laboratories, Inc., 41-1 Yokomichi, Nagakute-cho, Aichi, Japan
| | - E Miura
- National Institute of Advanced Industrial Science and Technology, 1-1-1 Umezono, Tsukuba, Ibaraki 305-8568, Japan
| | - Y Arikawa
- Institute of laser Engineering, Osaka University, 2-6 Yamadaoka, Suita, Osaka 565, Japan
| | - T Nagai
- Institute of laser Engineering, Osaka University, 2-6 Yamadaoka, Suita, Osaka 565, Japan
| | - Y Abe
- Institute of laser Engineering, Osaka University, 2-6 Yamadaoka, Suita, Osaka 565, Japan
| | - S Ozaki
- National Institute for Fusion Science, 322-6 Oroshi Toki, Gifu 509-5292, Japan
| | - A Noda
- Advanced Research Center for Beam Science, Institute for Chemical Research, Kyoto University, Gokasho, Uji, Kyoto 611-0011, Japan
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Wang WM, Gibbon P, Sheng ZM, Li YT. Integrated simulation approach for laser-driven fast ignition. PHYSICAL REVIEW. E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS 2015; 91:013101. [PMID: 25679717 DOI: 10.1103/physreve.91.013101] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2014] [Indexed: 06/04/2023]
Abstract
An integrated simulation approach fully based on the particle-in-cell (PIC) model is proposed, which involves both fast-particle generation via laser solid-density plasma interaction and transport and energy deposition of the particles in extremely high-density plasma. It is realized by introducing two independent systems in a simulation, where the fast-particle generation is simulated by a full PIC system and the transport and energy deposition computed by a second PIC system with a reduced field solver. Data of the fast particles generated in the full PIC system are copied to the reduced PIC system in real time as the fast-particle source. Unlike a two-region approach, which takes a single PIC system and two field solvers in two plasma density regions, respectively, the present one need not match the field solvers since the reduced field solver and the full solver adopted respectively in the two systems are independent. A simulation case is presented, which demonstrates that this approach can be applied to integrated simulation of fast ignition with real target densities, e.g., 300 g/cm(3).
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Affiliation(s)
- W-M Wang
- Forschungszentrum Jülich GmbH, Institute for Advanced Simulation, Jülich Supercomputing Centre, D-52425 Jülich, Germany and Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, CAS, Beijing 100190, China and IFSA Collaborative Innovation Center, Shanghai Jiao Tong University, Shanghai 200240, China
| | - P Gibbon
- Forschungszentrum Jülich GmbH, Institute for Advanced Simulation, Jülich Supercomputing Centre, D-52425 Jülich, Germany
| | - Z-M Sheng
- IFSA Collaborative Innovation Center, Shanghai Jiao Tong University, Shanghai 200240, China and SUPA, Department of Physics, University of Strathclyde, Glasgow G4 0NG, United Kingdom and Key Laboratory for Laser Plasmas (MoE) and Department of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Y-T Li
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, CAS, Beijing 100190, China and IFSA Collaborative Innovation Center, Shanghai Jiao Tong University, Shanghai 200240, China
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Komura M, Kamata K, Iyoda T, Nagai K. Hexagonally Arranged Nanopore Film Fabricated via Selective Etching by 172-nm Vacuum Ultraviolet Light Irradiation. FUSION SCIENCE AND TECHNOLOGY 2013. [DOI: 10.13182/fst13-a16347] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Motonori Komura
- Tokyo Institute of Technology, Chemical Resources Laboratory, Division of Integrated Molecular Engineering 4259-R1-25, Nagatsuta-cho, Midori-ku, Yokohama 226-8503, Japan
| | - Kaori Kamata
- Tokyo Institute of Technology, Chemical Resources Laboratory, Division of Integrated Molecular Engineering 4259-R1-25, Nagatsuta-cho, Midori-ku, Yokohama 226-8503, Japan
| | - Tomokazu Iyoda
- Tokyo Institute of Technology, Chemical Resources Laboratory, Division of Integrated Molecular Engineering 4259-R1-25, Nagatsuta-cho, Midori-ku, Yokohama 226-8503, Japan
| | - Keiji Nagai
- Tokyo Institute of Technology, Chemical Resources Laboratory, Division of Integrated Molecular Engineering 4259-R1-25, Nagatsuta-cho, Midori-ku, Yokohama 226-8503, Japan
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Habara H, Mishima Y, Nakanii N, Honda S, Katayama M, Gremillet L, Willingale L, Maksimchuk A, Krushelnick K, Tanaka K. Enhanced energy coupling by using structured nano-wire targets. EPJ WEB OF CONFERENCES 2013. [DOI: 10.1051/epjconf/20135917007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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7
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Kitagawa Y, Mori Y, Komeda O, Ishii K, Hanayama R, Fujita K, Okihara S, Sekine T, Satoh N, Kurita T, Takagi M, Kawashima T, Kan H, Nakamura N, Kondo T, Fujine M, Azuma H, Motohiro T, Hioki T, Nishimura Y, Sunahara A, Sentoku Y. Fusion using fast heating of a compactly imploded CD core. PHYSICAL REVIEW LETTERS 2012; 108:155001. [PMID: 22587260 DOI: 10.1103/physrevlett.108.155001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2011] [Indexed: 05/31/2023]
Abstract
A compact fast core heating experiment is described. A 4-J 0.4-ns output of a laser-diode-pumped high-repetition laser HAMA is divided into four beams, two of which counterilluminate double-deuterated polystyrene foils separated by 100 μm for implosion. The remaining two beams, compressed to 110 fs for fast heating, illuminate the same paths. Hot electrons produced by the heating pulses heat the imploded core, emitting x-ray radiations >20 eV and yielding some 10(3) thermal neutrons.
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Affiliation(s)
- Y Kitagawa
- The Graduate School for the Creation of New Photonics Industries, Kurematsuchou, 1955-1 Nishi-ku, Hamamatsu 431-1202 Japan.
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Macphee AG, Divol L, Kemp AJ, Akli KU, Beg FN, Chen CD, Chen H, Hey DS, Fedosejevs RJ, Freeman RR, Henesian M, Key MH, Le Pape S, Link A, Ma T, Mackinnon AJ, Ovchinnikov VM, Patel PK, Phillips TW, Stephens RB, Tabak M, Town R, Tsui YY, Van Woerkom LD, Wei MS, Wilks SC. Limitation on prepulse level for cone-guided fast-ignition inertial confinement fusion. PHYSICAL REVIEW LETTERS 2010; 104:055002. [PMID: 20366771 DOI: 10.1103/physrevlett.104.055002] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2009] [Indexed: 05/29/2023]
Abstract
The viability of fast-ignition (FI) inertial confinement fusion hinges on the efficient transfer of laser energy to the compressed fuel via multi-MeV electrons. Preformed plasma due to the laser prepulse strongly influences ultraintense laser plasma interactions and hot electron generation in the hollow cone of an FI target. We induced a prepulse and consequent preplasma in copper cone targets and measured the energy deposition zone of the main pulse by imaging the emitted K_{alpha} radiation. Simulation of the radiation hydrodynamics of the preplasma and particle in cell modeling of the main pulse interaction agree well with the measured deposition zones and provide an insight into the energy deposition mechanism and electron distribution. It was demonstrated that a under these conditions a 100 mJ prepulse eliminates the forward going component of approximately 2-4 MeV electrons.
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Affiliation(s)
- A G Macphee
- Lawrence Livermore National Laboratory, Livermore, California, USA.
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Kahaly S, Yadav SK, Wang WM, Sengupta S, Sheng ZM, Das A, Kaw PK, Kumar GR. Near-complete absorption of intense, ultrashort laser light by sub-lambda gratings. PHYSICAL REVIEW LETTERS 2008; 101:145001. [PMID: 18851536 DOI: 10.1103/physrevlett.101.145001] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2008] [Indexed: 05/26/2023]
Abstract
We demonstrate near-100% light absorption and increased x-ray emission from dense plasmas created on solid surfaces with a periodic sub-lambda structure. The efficacy of the structure-induced surface plasmon resonance, responsible for enhanced absorption, is directly tested at the highest intensities to date (3 x 10{15} W cm{-2}) via systematic, correlated measurements of absorption and x-ray emission. An analytical grating model as well as 2D particle-in-cell simulations conclusively explain our observations. Our study offers a definite, quantitative way forward for optimizing and understanding the absorption process.
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Affiliation(s)
- Subhendu Kahaly
- Tata Institute of Fundamental Research, 1 Homi Bhabha Road, Mumbai 400005, India
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Tanimoto T, Ohta K, Habara H, Yabuuchi T, Kodama R, Tampo M, Zheng J, Tanaka KA. Use of imaging plates at near saturation for high energy density particles. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2008; 79:10E910. [PMID: 19044565 DOI: 10.1063/1.2987679] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Since an imaging plate (IP) is sensitive to electron, ion, and x rays, it can be used as a detector for laser plasma experiment using ultraintense laser. Moreover, an IP has the advantageous features such as high sensitivity, wide dynamic range, and high spatial resolution. Even though IP itself has a considerable wide dynamic range up to 10(5), the IP data have appeared often saturated at an IP reading device. We propose a reading technique by inserting optical density filters so that an apparently saturated IP data can be saved.
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Affiliation(s)
- Tsuyoshi Tanimoto
- Graduate School of Engineering, Osaka University, Osaka 565-0871, Japan
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