Radiation effect on pellet implosion and Rayleigh-Taylor instability in light-ion beam inertial confinement fusion

Kawata, Shigeo; Sato, Tomohiro; Teramoto, Tokuo; Bandoh, E.; Masubichi, Y.; Takahashi, Isao

doi:10.1017/s0263034600006492

Cited by 47 publications

(67 citation statements)

References 15 publications

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“…The fuel target implosion nonuniformity must be reduced less than a few percent [10]. The wobbling HIBs illumination provides a sufficiently small acceleration nonuniformity, which may help to reduce the Rayleigh-Taylor instability growth [3,4]. The small-amplitude nonuniformity oscillation frequency is the wobbling oscillation frequency and the double of the wobbling frequency.…”

Section: Discussionmentioning

confidence: 99%

“…The small-amplitude nonuniformity oscillation frequency is the wobbling oscillation frequency and the double of the wobbling frequency. The wobbling HIBs may supply a new stable and uniform implosion mode in HIF [3,4].…”

Section: Discussionmentioning

confidence: 99%

“…So far the wobbling HIBs illumination has been considered by the time averaged illumination [3][4][5][6]. In the time averaged energy deposition onto a spherical direct drive target, the averaged illumination nonuniformity was small, for example, less than a few percent [6].…”

Section: Spiraling Heavy Ion Beam Illumination Uniformitymentioning

confidence: 99%

“…The HIB axis rotation radius is 2 mm and the HIB radius is 3 mm [5,9]. When the 09002-p. 3 Figure 6. Spectrum of the mode (2, 0) in its frequency space.…”

Section: Spiraling Heavy Ion Beam Illumination Uniformitymentioning

confidence: 99%

“…Our recent work presented that the Rayleigh-Taylor (R-T) instability growth can be reduced significantly by the sinusoidally oscillating HIBs in time and space [3,4].…”

Section: Introductionmentioning

confidence: 99%

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Spiral wobbling beam illumination uniformity in HIF fuel target implosion

Kawata

Kurosaki

Koseki

et al. 2013

EPJ Web of Conferences

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Abstract.A few % wobbling-beam illumination nonuniformity is realized in heavy ion inertial confinement fusion (HIF) throughout the heavy ion beam (HIB) driver pulse by a newly introduced spiraling beam axis motion in the first two rotations. The wobbling HIB illumination was proposed to realize a uniform implosion in HIF. However, the initial imprint of the wobbling HIBs was a serious problem and introduces a large unacceptable energy deposition nonuniformity. In the wobbling HIBs illumination, the illumination nonuniformity oscillates in time and space. The oscillating-HIB energy deposition may produce a timedependent implosion acceleration, which reduces the Rayleigh-Taylor (R-T) growth [Laser Part. Beams 11, 757 (1993)

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Spiraling Heavy Ion Beam Illumination Uniformitymentioning

confidence: 99%

“…The HIB axis rotation radius is 2 mm and the HIB radius is 3 mm [5,9]. When the 09002-p. 3 Figure 6. Spectrum of the mode (2, 0) in its frequency space.…”

Section: Spiraling Heavy Ion Beam Illumination Uniformitymentioning

confidence: 99%

“…Our recent work presented that the Rayleigh-Taylor (R-T) instability growth can be reduced significantly by the sinusoidally oscillating HIBs in time and space [3,4].…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Spiral wobbling beam illumination uniformity in HIF fuel target implosion

Kawata

Kurosaki

Koseki

et al. 2013

EPJ Web of Conferences

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Applications of Plasmas

Kawata

2023

Springer Series in Plasma Science and Technology

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Code O-SUKI: Simulation of direct-drive fuel target implosion in heavy ion inertial fusion

Satô

Kawata

Karino

et al. 2019

Computer Physics Communications

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The Code O-SUKI is an integrated 2-dimensional (2D) simulation program system for a fuel implosion, ignition and burning of a direct-drive nuclear-fusion pellet in heavy ion beam (HIB) inertial confinement fusion (HIF). The Code O-SUKI consists of the four programs of the HIB illumination and energy deposition program of OK3 (Comput. Phys. Commun. 181, 1332), a Lagrangian fluid implosion program, a data conversion program, and an Euler fluid implosion, ignition and burning program. The OK3 computes the multi-HIBs irradiation onto a spherical fuel target. One HIB is divided into many beamlets in OK3. Each heavy ion beamlet deposits its energy along the trajectory in a deposition layer depending on the particle energy. The OK3 also has a function of a wobbling motion of the HIB axis oscillation, and the HIBs energy deposition spatial detail profile is obtained inside the energy absorber of the fuel target. The spherical target implosion 2D behavior is computed by the 2D Lagrangian fluid code coupled with OK3, until just before the void closure time of the fuel implosion. After that, all the data by the Lagrangian implosion code are converted to them for the Eulerian code. The fusion Deuterium (D)-Tritium (T) fuel and the inward moving heavy tamping material are imploded and deformed seriously at the stagnation phase. The Euler fluid code is appropriate to simulate the fusion fuel compression, ignition and burning. The Code O-SUKI 2D simulation system provides a capability to compute and to study the HIF target implosion dynamics. Program summaryProgram Title: O-SUKI Licensing provisions: CC BY NC 3.0 Programming language: C++ Computer: PC(Pentium 4, 1 GHz or more recommended) RAM: 3072 MBytes Operating system: UNIX Journal reference of previous version: No Nature of problem: The nuclear fusion energy would provide one of energy resources for our human society. In this paper we focus on heavy ion beam (HIB) inertial confinement fusion (HIF). A spherical deuterium (D) -tritium (T) fuel pellet, whose radius may be about several mm, is irradiated by HIBs to be compressed to about a thousand times of the solid density. The DT fuel temperature reaches ∼5-10KeV to be ignited to release the DT fusion energy. The typical HIBs total input energy is several MJ, and the HIBs pulse length is about a few tens of ns. The DT fuel compression uniformity is essentially important to release the sufficient fusion energy output. The DT fuel pellet implosion non-uniformity should be kept less than a few %. The O-SUKI code system provides an integrated tool to simulate the HIF DT fuel pellet implosion, ignition and burning. The HIBs energy deposition detail profile is computed by the OK3 code (Comput. Phys. Commun. 181, 1332Commun. 181, (2010) in an energy absorber outer layer, which covers the DT fuel spherical shell. The DT fuel is compressed to the high density, and so the DT fuel spatial deformation may be serious at the DT fuel stagnation. Therefore, the O-SUKI system employs a Lagrangian fluid code first to simulate the DT fuel ...

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Radiation effect on pellet implosion and Rayleigh-Taylor instability in light-ion beam inertial confinement fusion

Cited by 47 publications

References 15 publications

Spiral wobbling beam illumination uniformity in HIF fuel target implosion

Spiral wobbling beam illumination uniformity in HIF fuel target implosion

Applications of Plasmas

Code O-SUKI: Simulation of direct-drive fuel target implosion in heavy ion inertial fusion

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