Plasticity and strength of nitrogen-doped normal-hydrogen (n-H2) crystals

Алексеева, Л. А.; Нацик, В. Д.; Romashkin, R. V.; Vashchenko, L. A.; Garbuz, A. S.; Lyakhno, V. Yu.

doi:10.1134/s1063783406080154

Cited by 4 publications

(2 citation statements)

References 4 publications

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“…The results obtained for solid hydrogen samples [101] have shown that even a slight granularity growth (grain size decrease by a factor of 1.4) significantly increases the deformation strengthening coefficient along the entire deformation curve. The strength limit also increases by ∼1.3 times.…”

Section: Fuel Layering In Free-standing and Line-moving Targetsmentioning

confidence: 89%

Review on high repetition rate and mass production of the cryogenic targets for laser IFE

Александрова

Koresheva

2017

High Pow Laser Sci Eng

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In inertial fusion energy (IFE) research, a considerable attention has recently been focused on the issue of large target fabrication for MJ-class laser facilities. The ignition and high-gain target designs require a condensed uniform layer of hydrogen fuel on the inside of a spherical shell. In this report, we discuss the current status and further trends in the area of developing the layering techniques intended to produce ignition, and layering techniques proposed to high repetition rate and mass production of IFE targets.

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Section: Fuel Layering In Free-standing and Line-moving Targetsmentioning

confidence: 89%

Review on high repetition rate and mass production of the cryogenic targets for laser IFE

Александрова

Koresheva

2017

High Pow Laser Sci Eng

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“…The results [10] obtained for solid hydrogen samples have shown that even a slight granularity growth (grain size decrease by a factor of 1.4) significantly increases the deformation strengthening coefficient along the entire deformation curve. The strength limit also increases in about 1.3 times.…”

Section: Fst-layering Methods For In-line Production Of Cryogenic Tar...mentioning

confidence: 98%

Target fabrication technologies and noncontact delivery systems to develop a free-standing target factory operating in the repetition mode at the IFE relevant level

Александрова¹,

Koresheva²,

Koshelev³

2021

Nucl. Fusion

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Realization of fusion energy imposes considerable challenges in the areas of producing cryogenic targets with an isotropic fuel structure and developing noncontact target delivery means. It was shown that the FST-layering method using high cooling rates (1–50 K s−1) and high-melting additives to fuel content (0.3%–25%) makes solid layers isotropic and free of local defects. FST-layering in line-moving shells is usually realized in a vertical single-spiral layering channel. Here we present our first results with a double-spiral layering channel (DS-LC). The cryogenic layers (D2 + 20% Ne) were formed in 5 shells (2R ∼ 1.8 mm) during their rolling in the DS-LC, and then they were gravitationally injected to the test chamber at T = 5 K. The obtained isotropic layers (W ∼ 87 μm) are stable in the temperature range from 5 K to T tp = 18.7 K of D2. The total layering time <20 s. Another critical issue is the noncontact target delivery. It is shown that using transport of high-temperature superconductors in the magnetic fields provides stable noncontact target acceleration placed in a superconducting sabot. The proof-of-principle experiments have shown that using only 1 field coil allows one to accelerate such sabot up to 1 m s−1. Computationally, it has been shown that acceleration up to a velocity of 200 m s−1 will require about 200 field coils (0.25 T each) along the 5 m-length of the linear accelerator with overloads a = 400 g; the velocity of 400 m s−1 will require the acceleration length of 20 m at the same a = 400 g. First steps are made to reduce the dimensions of the linear accelerator using a cyclic permanent magnet guideway with less than 10 field coils to achieve target injection velocities in the range of V inj = 200–400 m s−1.

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