Alternative approaches to the design of targets for a hybrid thermonuclear station

Basov, N G; Lebo, I. G.; Розанов, В. Б.; Тишкин, В. Ф.; Feoktistov, L. P.

doi:10.1070/qe1998v028n04abeh001219

Cited by 5 publications

(2 citation statements)

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“…1 shows the main parts of a fast ignition, direct compression target for a scenario involving the formation of a " hot spot" in a clot of main compressed fuel by a twosided cone target microexplosion. This scenario is analogous to the one proposed in paper [36] with formation of a " hot spot" in the main compressed fuel clot by a cone target microexplosion (see also [34,[45][46][47][48]). Compressing the region near the top of a cone target [34,36] or the middle of a two-sided cone target with the main compressed fuel will contribute to the efficient initiation of microexplosions of these targets.…”

Section: Concept Of Fast Ignition and Some Variants Of Fast Ignition ...supporting

confidence: 60%

On the problem of acceleration of fast ignition thermonuclear targets with two cones

Shmatov

2022

Technical Physics

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The problems of acceleration of fast ignition thermonuclear targets with two cones for their high-precision injection into region near the center of the reactor chamber are considered and the possibility of solution of these problems is shown. A brief review of discussed variants of such targets and of their main advantages, related to ignition of microexplosion and simplicity of providing preservation of targets workability during their flight in the reactor chamber, is presented. Fast ignition by microexplosion of two-sided cone target and the method to estimate acceptable speed of stabilizing rotation of thermonuclear target are proposed. Keywords: controlled thermonuclear fusion, inertial confinement, fast ignition, two-sided cone targets, spin stabilization of flight.

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Section: Concept Of Fast Ignition and Some Variants Of Fast Ignition ...supporting

confidence: 60%

On the problem of acceleration of fast ignition thermonuclear targets with two cones

Shmatov

2022

Technical Physics

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“…The designs of these reactors were studied in [3][4][5]. Specifically, it was shown in [4, 5] that an energy gain ~10 3 can be obtained as a result of fission in…”

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confidence: 99%

Power Plant for Heavy-Ion DT Fusion with Targets Containing Fissioning Materials

et al. 2005

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The special features of the concept of a hybrid power-generating plant, which combines the fusion and fission processes in a cylindrical target initiated by a high-power heavy-ion accelerator, are analyzed. The main advantages of the proposed setup are: burning of unenriched 238 U in the reactor cavity, continuous removal of fission products from the core, and impossibility of an uncontrollable nuclear reaction. The characteristics of matched heavy ion accelerator, target, reactor chamber, and blanket with circulating coolant in the blanket are presented, and the power parameters of the electric power plant are estimated.Evolution of the Concept of Hybrid Nuclear Power Systems. Different physical principles for producing energy can be used in nuclear power reactors: fission of actinides, fusion of light elements, or a combination of both of these reactions (hybrid system). In our view, a hybrid nuclear power system will have the highest energy production efficiency. In fission systems, most of the energy is contained in fission products, and the neutrons, although they do initiate this process, make a relatively small contribution to energy release. Conversely, in the DT fusion reaction the neutrons produced carry most of the energy. A combination of the fission and fusion processes in a single system would make it possible to increase substantially the specific power release (per unit mass of nuclear fuel). The fission energy increases the gain of the entire system (ratio of the obtained energy to the energy consumed), which for a prescribed power level decreases the requirements for increasing the power of the thermonuclear target itself. Burning uranium fuel in a hybrid reactor does not require critical parameters, which makes the system much safer. These considerations form the basis for various proposals for the development of hybrid nuclear power systems.In the first hybrid schemes, it was proposed that the thermonuclear reaction can be realized in some way (magnetic confinement, laser or ionic inertial confinement fusion, reaction on Z pinches), and the power of the reaction can be varied over the required limits so that the neutron flux would be controllable and would give the required fission of heavy nuclei in a subcritical assembly.For laser-driven thermonuclear fusion, hybrid schemes were first proposed in [1,2]. The designs of these reactors were studied in [3][4][5]. Specifically, it was shown in [4, 5] that an energy gain ~10 3 can be obtained as a result of fission in

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Design of laser pulse shapes and target structures by random optimization for direct-drive inertial confinement fusion

Yang

et al. 2022

Physics of Plasmas

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Quasi-isentropic compression is required for inertial confinement fusion (ICF) to compress the target to a high density and high temperature status, where to match the laser pulse shape and target structure is of great significance to the implosion. However, many parameters for the laser pulse shape and the target structure should be optimized in order to realize such match. In this paper, the drive laser pulse and the target structure are designed using a random optimization method for a direct-drive ICF implosion driven by a 358.40 kJ laser pulse. This method can quickly optimize the laser pulse and target structure parameters for an efficient quasi-isentropic compression of the plasmas, leading to an areal density of 9.30% higher than that given by the hydrodynamic scaling. A correlation matrix is also constructed to analyze the correlation between the parameters. This provides a reference for further optimization and improvement. The method should have potential applications in the target design for future ICF experiments.

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Alternative approaches to the design of targets for a hybrid thermonuclear station

Cited by 5 publications

References 0 publications

On the problem of acceleration of fast ignition thermonuclear targets with two cones

On the problem of acceleration of fast ignition thermonuclear targets with two cones

Power Plant for Heavy-Ion DT Fusion with Targets Containing Fissioning Materials

Design of laser pulse shapes and target structures by random optimization for direct-drive inertial confinement fusion

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