In-Target Proton–Boron Nuclear Fusion Using a PW-Class Laser

Margarone, D.; Bonvalet, J.; Giuffrida, L.; Morace, A.; Kantarelou, V.; Tosca, Marco; Raffestin, D.; Nicolaï, Philippe; Picciotto, Antonino; Abe, Yuki; Arikawa, Yasunobu; Fujioka, Shinsuke; Fukuda, Yuji; Kuramitsu, Yasuhiro; Habara, H.; Batani, D.

doi:10.3390/app12031444

Cited by 50 publications

(56 citation statements)

References 27 publications

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“…However, HB11 has published results with pB11 fuel using the LFEX facility in Osaka, Japan. They published [35] a fusion yield of 1.4 x10 11 alpha particles, for an energy release of 66mJ with a device energy input of 6.5 MJ , yielding  = 1.0x10 -8 , a factor of about 300 less than LPPFusion's result with D, a less reactive fuel.…”

Section: Highest Wall-plug Efficiency Among Private Fusion Effortsmentioning

confidence: 97%

Focus Fusion: Overview of Progress Towards p-B11 Fusion with the Dense Plasma Focus

Lerner

Hassan

2022

Preprint

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LPPFusion is developing a source of fusion energy using the dense plasma focus device and pB11 fuel, a combination we call Focus Fusion. So far, this project has led to the achievement of the highest confined ion energies of any fusion experiment (> 200 keV) as well as, recently, the lowest impurities of any fusion plasma. Among privately-funded fusion efforts, our experiments have achieved the highest ratio of fusion energy generation to device energy input (wall-plug efficiency) and the highest ntT product of 3.4x1020 keV-s/cm3. Our calculations and simulations indicate that the quantum magnetic field effect will allow a great reduction in bremsstrahlung radiation with pB11 fuel. For commercial fusion, this approach has several major advantages. The small size and simplicity of design of the DPF can lead to 5MW generators that are much cheaper than any existing energy source, that can be manufactured by mass production and that can be located close to loads. It shares with other pB11 approaches a lack of neutron damage and radioactive waste. Direct energy conversion of the ion beam and x-rays produced by the device avoids the high costs associated with thermal cycles. With adequate, but still modest, financial resources we anticipate working prototype generators could be ready for production by 2026–2030.

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Section: Highest Wall-plug Efficiency Among Private Fusion Effortsmentioning

confidence: 97%

Focus Fusion: Overview of Progress Towards p-B11 Fusion with the Dense Plasma Focus

Lerner

Hassan

2022

Preprint

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“…Su invención hizo posible la cirugía LASIK y abrió el camino a los láseres de petawatios de pulsos ultracortos (duración de decenas a centenas de 46(181):.920-938, octubre-diciembre de 2022. doi: https://doi.org/10.18257/raccefyn.1748 Revista de la Academia Colombiana de Ciencias Exactas, Físicas y Naturales. femtosegundos) que han aumentado grandemente las posibilidades de obtener la fusión nuclear con láseres (Tollefson, 2021;Margarone et al, 2022). Gérard Mourou y Donna Strickland recibieron el Premio Nobel del 2018 "por su método para generar pulsos ópticos ultracortos de alta intensidad".…”

Section: Fusión Nuclear Con Láseresunclassified

Óptica y fotónica: ciencia y tecnología de la luz

Hernández

2022

Rev. Acad. Colomb. Cienc. Ex. Fis. Nat.

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Este artículo de revisión presenta el panorama actual de las múltiples tecnologías basadas en la luz que se han hecho indispensables en nuestra vida diaria y que seguirán teniendo impacto en ella y en la economía mundial. Con el objetivo de motivar la formulación de un plan nacional de desarrollo de la investigación y apropiación de la tecnología fotónica en Colombia, se presentan los propósitos generales de algunas iniciativas regionales y nacionales de investigación y desarrollo en óptica y fotónica.

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“…An experimental realization of this integrated fusion reactor concept poses unique challenges in many aspects, such as, for example, fulfilling the laser driver requirements, in target manufacturing, and to accurately diagnose the laser-target interaction under the demanding conditions inside the reactor. Most investigations about laser-driven proton-boron fusion have measured the escaping alpha particles [2][3][4][5][6][7][8][9][10][11] to infer fusion efficiencies. However, alpha particle detection in such experiments is challenging due to the fact that the target also emits other ions such as protons and borons, with identical or similar energies and charge-to-mass ratios as the alpha particles, leading to overlapping signals in detectors.…”

Section: Introductionmentioning

confidence: 99%

Investigation of Proton Beam-Driven Fusion Reactions Generated by an Ultra-Short Petawatt-Scale Laser Pulse

Schollmeier¹,

Shirvanyan²,

Capper³

et al. 2022

Laser Part. Beams

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We present results from a pitcher-catcher experiment utilizing a proton beam generated with nanostructured targets at a petawatt-class, short-pulse laser facility to induce proton-boron fusion reactions in a secondary target. A 45-fs laser pulse with either 400 nm wavelength and 7 J energy, or 800 nm and 14 J, and an intensity of up to 5 × 1021 W/cm2 was used to irradiate either thin foil targets or near-solid density, nanostructured targets made of boron nitride (BN) nanotubes. In particular, for 800 nm wavelength irradiation, a BN nanotube target created a proton beam with about five times higher maximum energy and about ten times more protons than a foil target. This proton beam was used to irradiate a thick plate made of boron nitride placed in close proximity to trigger 11B (p, α) 2α fusion reactions. A suite of diagnostics consisting of Thomson parabola ion spectrometers, postshot nuclear activation measurements, neutron time-of-flight detectors, and differentially filtered solid-state nuclear track detectors were used to measure both the primary proton spectrum and the fusion products. From the primary proton spectrum, we calculated (p, n) and (α,n) reactions in the catcher and compare with our measurements. The nuclear activation results agree quantitatively and neutron signals agree qualitatively with the calculations, giving confidence that primary particle distributions can be obtained from such measurements. These results provide new insights for measuring the ion distributions inside of proton-boron fusion targets.

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In-Target Proton–Boron Nuclear Fusion Using a PW-Class Laser

Cited by 50 publications

References 27 publications

Focus Fusion: Overview of Progress Towards p-B11 Fusion with the Dense Plasma Focus

Focus Fusion: Overview of Progress Towards p-B11 Fusion with the Dense Plasma Focus

Óptica y fotónica: ciencia y tecnología de la luz

Investigation of Proton Beam-Driven Fusion Reactions Generated by an Ultra-Short Petawatt-Scale Laser Pulse

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