Generation of a strong magnetic field by intense CO2 laser irradiation

Daido, Hiroyuki; Miki, F.; Mima, Kunioki; Fujita, Masayuki; Nishimura, Hiroaki; Fujita, Hisanori; Kitagawa, Yoneyoshi; Nakai, S.; Yamanaka, Chiyoe

doi:10.1364/cleo.1986.thk31

Cited by 20 publications

(21 citation statements)

References 2 publications

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“…The physics of the generation of the ultrahigh magnetic fields in the coils (Fujioka et al, 2013) is indeed an outstanding achievement following the work of Daido et al (1986) and of Hohenberger et al (2012) using nanosecond laser pulses of usual level. Nevertheless, the studying of the field properties, the time dependence, and further improvement are of technology for laboratory projects on usual level.…”

Section: Laser Boron Fusion Reactor With Basically New Propertiesmentioning

confidence: 99%

Road map to clean energy using laser beam ignition of boron-hydrogen fusion

Hora

Eliezer

Kirchhoff³

et al. 2017

Laser Part. Beams

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With the aim to overcome the problems of climatic changes and rising ocean levels, one option is to produce large-scale sustainable energy by nuclear fusion of hydrogen and other very light nuclei similar to the energy source of the sun. Sixty years of worldwide research for the ignition of the heavy hydrogen isotopes deuterium (D) and tritium (T) have come close to a breakthrough for ignition. The problem with the DT fusion is that generated neutrons are producing radioactive waste. One exception as the ideal clean fusion process – without neutron production – is the fusion of hydrogen (H) with the boron isotope11B11 (B11). In this paper, we have mapped out our research based on recent experiments and simulations for a new energy source. We suggest how HB11 fusion for a reactor can be used instead of the DT option. We have mapped out our HB11 fusion in the following way: (i) The acceleration of a plasma block with a laser beam with the power and time duration of the order of 10 petawatts and one picosecond accordingly. (ii) A plasma confinement by a magnetic field of the order of a few kiloteslas created by a second laser beam with a pulse duration of a few nanoseconds (ns). (iii) The highly increased fusion of HB11 relative to present DT fusion is possible due to the alphas avalanche created in this process. (iv) The conversion of the output charged alpha particles directly to electricity. (v) To prove the above ideas, our simulations show for example that 14 milligram HB11 can produce 300 kWh energy if all achieved results are combined for the design of an absolutely clean power reactor producing low-cost energy.

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Section: Laser Boron Fusion Reactor With Basically New Propertiesmentioning

confidence: 99%

Road map to clean energy using laser beam ignition of boron-hydrogen fusion

Hora

Eliezer

Kirchhoff³

et al. 2017

Laser Part. Beams

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“…Although the spontaneous magnetic fields and the surface-magnetic fields in plasma are very strong, they are not applicable for applications in free space. In 1986, H. Daido et al demonstrated a strong magnetic field with a capacitor-coil target irradiated by high power CO 2 laser pulses [23]. The field is generated due to the potential difference across two parallel plates induced by hot electrons.…”

Section: Introductionmentioning

confidence: 99%

Strong magnetic fields generated with a simple open-ended coil irradiated by high power laser pulses

Zhu

Yuan

et al. 2015

Applied Physics Letters

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A new simple mechanism due to cold electron flow to produce strong magnetic field is proposed. A 600-T strong magnetic field is generated in the free space at the laser intensity of 5.7 × 10 15 ⋅ −2 . Theoretical analysis indicates that the magnetic field strength is proportional to laser intensity. Such a strong magnetic field offers a new experimental test bed to study laser-plasma physics, in particular, fast-ignition laser fusion research and laboratory astrophysics.

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“…Moreover, proposed improvements involve sophisticated target structures [28][29][30], which efficiency is unproven in the harsh conditions of an ICF target.Here we present an alternative and apply for the first time an external B-field enough strong to guide MeVelectrons aligned with the REB propagation axis in solid targets. The 600 T B-field was produced by an alloptical technique using laser-driven coil targets [31][32][33][34][35] (see Methods). This technique creates a stable magnetic field that is of sufficiently long duration to fully magnetize the transport target prior to REB generation.…”

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confidence: 99%

Guiding of relativistic electron beams in dense matter by laser-driven magnetostatic fields

et al. 2018

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Intense lasers interacting with dense targets accelerate relativistic electron beams, which transport part of the laser energy into the target depth. However, the overall laser-to-target energy coupling efficiency is impaired by the large divergence of the electron beam, intrinsic to the laser–plasma interaction. Here we demonstrate that an efficient guiding of MeV electrons with about 30 MA current in solid matter is obtained by imposing a laser-driven longitudinal magnetostatic field of 600 T. In the magnetized conditions the transported energy density and the peak background electron temperature at the 60-μm-thick target's rear surface rise by about a factor of five, as unfolded from benchmarked simulations. Such an improvement of energy-density flux through dense matter paves the ground for advances in laser-driven intense sources of energetic particles and radiation, driving matter to extreme temperatures, reaching states relevant for planetary or stellar science as yet inaccessible at the laboratory scale and achieving high-gain laser-driven thermonuclear fusion.

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Generation of a strong magnetic field by intense CO2 laser irradiation

Cited by 20 publications

References 2 publications

Road map to clean energy using laser beam ignition of boron-hydrogen fusion

Road map to clean energy using laser beam ignition of boron-hydrogen fusion

Strong magnetic fields generated with a simple open-ended coil irradiated by high power laser pulses

Guiding of relativistic electron beams in dense matter by laser-driven magnetostatic fields

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