Nanostructured targets irradiation by ns-laser for nuclear astrophysics applications: first results

Muoio, A.; Altana, C.; Frassetto, M.; Lanzalone, G.; Malferrari, L.; Odorici, F.; Tudisco, S.

doi:10.1088/1748-0221/12/03/c03076

Cited by 3 publications

(2 citation statements)

References 15 publications

(18 reference statements)

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“…There is excellent agreement between the measured neutron speed and the known 2. 45 MeV neutron speed at various detector locations.…”

Section: Neutron Yieldsmentioning

confidence: 99%

“…Therefore, the interaction of nanosecond (ns) lasers with solid targets is well suited to generate extreme plasma environments at energy levels higher than the normal range. At the LENS laboratory in Catania, Italy, nanowire targets made of different materials are irradiated by using an infrared laser with an intensity of 10 12 W/cm 2 , a pulse duration of 6 ns, and an energy of 2 J [44,45]. It was found that, in the nanowire form, nanostructures on the surface of the target can absorb laser energy with very high efficiency.…”

Section: Introductionmentioning

confidence: 99%

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Deuterium–deuterium fusion in nanowire plasma driven with a nanosecond high-energy laser

Xi,

Lv,

et al. 2023

Front. Phys.

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Investigating the enhancement of the interaction between laser and plasma is crucial for fundamental and applied physics research studies based on laser-induced acceleration and nuclear reactions. The improvement of energy conversion efficiency resulting in increasing reaction yields has been extensively studied by the interaction of femtosecond (fs) or picosecond (ps) lasers with nanowire targets. However, the effects of nanosecond (ns) lasers interacting with nanowire targets on energy absorption and production yield remain unknown. To address this issue, we conducted a deuterium–deuterium fusion experiment based on the collision of two plasmas induced by the interaction of the kilo-Joule-level nanosecond laser with nanowire targets. The experimental results of neutron detection indicate that the yields of nanowire targets remain at the same level as those of planar targets. We have used the counter-streaming collisionless plasma model to perform a numerical analysis of the output of nuclear reaction products at the center-of-mass energy (Ec.m.) values between 10 and 30 keV, and the calculation results are in good agreement with the experimental results. In addition, a magneto-hydrodynamic numerical simulation was also performed. It shows that the critical density of the target’s surface, which forms on the picosecond time scale, blocks the absorption of laser energy with nanosecond pulse length. Consequently, both our experimental and simulation results indicate that the enhancement factor is limited when a target with a spatial period less than µm is used in conjunction with a ns laser. Therefore, additional research is highly desirable to develop a target structure that can improve the efficiency of energy conversion between the laser and the target.

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“…There is excellent agreement between the measured neutron speed and the known 2. 45 MeV neutron speed at various detector locations.…”

Section: Neutron Yieldsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Deuterium–deuterium fusion in nanowire plasma driven with a nanosecond high-energy laser

Xi,

Lv,

et al. 2023

Front. Phys.

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Numerical simulations on laser absorption enhancement in hybrid metallo-dielectric nanostructured targets for future nuclear astrophysics experiments

et al. 2020

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The linear electromagnetic interaction between innovative hybrid metallo-dielectric nanostructured targets and laser in visible and IR range is investigated through numerical simulations. The obtained results rely on the optimization of a target based on metallic nanowires (NWs) to enhance light absorption in the visible range of the electromagnetic spectrum. The NWs are grown within the ordered nanoholes of an alumina substrate, thus, forming a plasmonic lattice with triangular symmetry. The remaining volume of the nanoholes on top of the NWs is sealed with a transparent layer of aluminum oxide that is suitable to be chemically modified for containing about 25% of deuterium atoms. The study presented here is carried out within the framework of a scientific program named PLANETA (Plasmonic Laser Absorption on Nano-Engineered Targets) aiming at investigating new laser–matter interaction schemes in the ns domain and for nuclear fusion purposes, involving especially the D–D reaction.

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Nuclear Reactions Studies in Laser-Plasmas at the forthcoming ELI-NP facilities

Lanzalone¹,

Muoio²,

Altana³

et al. 2018

J. Phys.: Conf. Ser.

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Nanostructured targets irradiation by ns-laser for nuclear astrophysics applications: first results

Cited by 3 publications

References 15 publications

Deuterium–deuterium fusion in nanowire plasma driven with a nanosecond high-energy laser

Deuterium–deuterium fusion in nanowire plasma driven with a nanosecond high-energy laser

Numerical simulations on laser absorption enhancement in hybrid metallo-dielectric nanostructured targets for future nuclear astrophysics experiments

Nuclear Reactions Studies in Laser-Plasmas at the forthcoming ELI-NP facilities

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