Excitation of promising nuclear fusion reactions in picosecond laser plasmas

Belyaev, V. S.; Виноградов, В. И.; Матафонов, А. П.; Rybakov, S. M.; Крайнов, В. П.; Lisitsa, V. S.; Андрианов, В. П.; Ignatiev, G. N.; Bushuev, V.S.; Громов, А. И.; Rusetsky, A. S.; Dravin, V. A.

doi:10.1134/s1063778809070011

Cited by 30 publications

(15 citation statements)

References 22 publications

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“…≈ 600 keV [14] that dominates the total cross section of the reaction. Therefore the efforts of laser driven fusion studies focus on that energy range [15].…”

Section: Introductionmentioning

confidence: 99%

Low energy measurements of the B10(p,α)Be7 reaction

2017

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Background:The 11 B(p, 2α) 4 He reaction is being discussed as a prime candidate for advanced aneutronic fusion fuel systems. Particular interest in this reaction has recently emerged for laser driven plasma systems for energy generation and jet-propulsion systems. The lack of long-lived radioactive reaction products has been suggested as the main advantage of proton-boron fusion fuel. However, 19% of natural boron is 10 B, with the 10 B(p, α) 7 Be fusion reaction producing long-lived 7 Be as a side product.Purpose: A detailed measurement of the 10 B(p, α) 7 Be reaction over the critical energy range of hot fusion plasma environments will help to determine the amount of 7 Be radioactivity being produced. This information can be used in turn to monitor the actual fusion temperature by off-line measurement of the extracted 7 Be activity. The goal of the here presented experiment is to expand on the results of earlier experiments, covering a wider energy range of interest for aneutronic plasma fusion applications, including also both 10 B(p, α0) 7 Be and the 10 B(p, α1)7 Be reaction channels.Method: The reaction cross section was measured over a wide energy range from Ep = 400 to 1000 keV using particle detection and from Ep = 80 to 1440 keV using γ-ray spectroscopic techniques. Reaction α particles were measured at different angles to obtain angular distribution information. The results are discussed in terms of an R-matrix analysis. Results:The cross section data cover a wider energy range than previously investigated and bridge a gap in the previously available data sets. The cross sections show good agreement with previous results in the low energy region and show that the 10 B(p, α0) 7 Be channel is considerably larger than that of the 10 B(p, α1) 7 Be channel up to Ep ≈ 1 MeV. Conclusions:The new reaction data provides important new information about the reaction cross section over the entire energy range of plasma fusion facilities. This data, when coupled with previous measurement of the competing 10 B(p, γ) 11 C reaction will provide the opportunity for an extensive R-matrix analysis of the rather complex level structure in the 11 C compound nucleus system.

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“…≈ 600 keV [14] that dominates the total cross section of the reaction. Therefore the efforts of laser driven fusion studies focus on that energy range [15].…”

Section: Introductionmentioning

confidence: 99%

Low energy measurements of the B10(p,α)Be7 reaction

2017

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“…After the irradiation the detectors were etched in the solution 6M NaOH in H 2 O at the temperature of 70C during 7 hours. A detailed procedure of the track detector calibration is considered in 8 .…”

Section: Experimental Set-upmentioning

confidence: 99%

Observation of Neutron Bursts Produced by Laboratory High-Voltage Atmospheric Discharge

et al. 2013

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For the first time the emission of neutron bursts in the process of high-voltage discharge in air was observed. Experiments were carried out at an average electric field strength of ∼1 MV·m(-1) and discharge current of ∼10 kA. Two independent methods (CR-39 track detectors and plastic scintillation detectors) registered neutrons within the range from thermal energies up to energies above 10 MeV and with an average flux density of ≳10(6) cm(-2) per shot inside the discharge zone. Neutron generation occurs at the initial phase of the discharge and correlates with x-ray generation. The data obtained allow us to assume that during the discharge fast neutrons are mainly produced.

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“…Promising nuclear fusion reactions which do not produce neutrons are the p+ 11 B → 3α + 8.7 MeV [1-6, 9, 10] and the D+ 3 He → p + α + 18.34 MeV [6,10,11] which, in addition, do not require radioactive reagents. Indeed, in D+ 3 He, some neutrons are produced by D-D reactions.…”

Section: Introductionmentioning

confidence: 99%

“…Indeed, in D+ 3 He, some neutrons are produced by D-D reactions. The p+ 11 B reaction is considered for the third-generation fusion reactors, while D+ 3 He for the second generation [12], although one major problem is the scarcity of available 3 He in nature [10,13]. The higher energy required to achieve fusions from these reactions, with respect to the D-T, FIGURE 1 | (A) Total fusion cross-section vs. center-of-mass energy for D-T and p- 11 B fusion reactions [1][2][3].…”

Section: Introductionmentioning

confidence: 99%