Improvement of ignition and burning target design for fast ignition scheme

AbstractThe shock waves in laser plasma interaction have played an important role in the study of inertial fusion energy (IFE) since the 1970's and perhaps earlier. The interaction of laser, or any other high power beam, induced shock waves with matter was one of the foundations of the target design in IFE. Even the importance of shock wave collision was studied and its importance forgotten. In due course, the shock waves were taken as granted and became “second fiddle” in IFE scenario. The analysis of the shock wave in the context of IFE is revived in this paper. At the forefront of the past decade the concept of fast ignition was introduced. The different ideas of fast ignition are summarized with special emphasis on shock wave fast ignition. The ignition is achieved by launching a shock wave during the final stages of the implosion. In this paper, a possible instability in the propagation of the igniting shock wave is analyzed. The idea of combining the fast ignition fusion with an impact shock wave is suggested and analyzed. This is achieved by launching a shock wave by an accelerated foil during the final stage of the implosion in order to ignite the compressed fuel. In this scheme, like other fast ignition schemes, a significant reduction of the driver energy in comparison with standard IFE scenarios is required for the same high gain fusion.

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Preliminary target design for integrated direct-drive fast ignition experiments on Shenguang-II upgrade facility

Acta Physica Sinica ◽

10.7498/aps.63.125205 ◽

2014 ◽

Vol 63 (12) ◽

pp. 125205

Author(s):

Tian Chao ◽

Shan Lian-Qiang ◽

Zhou Wei-Min ◽

Gao Zhe ◽

Gu Yu-Qiu ◽

...

Keyword(s):

Fast Ignition ◽

Direct Drive ◽

Target Design

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Target design for high-density non-spherical implosion in fast ignition

Journal of Physics Conference Series ◽

10.1088/1742-6596/112/2/022053 ◽

2008 ◽

Vol 112 (2) ◽

pp. 022053

Author(s):

H Nagatomo ◽

T Johzaki ◽

A Sunahara ◽

T Nakamura ◽

H Sakagami ◽

...

Keyword(s):

Fast Ignition ◽

High Density ◽

Target Design

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Target design & fabrication

Physics Subject Headings (PhySH) ◽

10.29172/17e985e4-5274-418e-953c-66b0458bde5c ◽

2018 ◽

Keyword(s):

Target Design

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Fast ignition

Physics Subject Headings (PhySH) ◽

10.29172/afce6bb5-4b42-4ae1-b0fe-7dfe73edcb14 ◽

2018 ◽

Keyword(s):

Fast Ignition

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Production of ion beams in high-power laser–plasma interactions and their applications

Laser and Particle Beams ◽

10.1017/s0263034604221048 ◽

2004 ◽

Vol 22 (1) ◽

pp. 19-24 ◽

Cited By ~ 21

Author(s):

F. PEGORARO ◽

S. ATZENI ◽

M. BORGHESI ◽

S. BULANOV ◽

T. ESIRKEPOV ◽

...

Keyword(s):

Laser Pulse ◽

Medical Physics ◽

Ion Beam ◽

Laser Pulses ◽

Ion Beams ◽

Laser Plasma Interactions ◽

Physical Mechanisms ◽

Short Laser Pulses ◽

Laser Pulse Intensity ◽

Target Design

Energetic ion beams are produced during the interaction of ultrahigh-intensity, short laser pulses with plasmas. These laser-produced ion beams have important applications ranging from the fast ignition of thermonuclear targets to proton imaging, deep proton lithography, medical physics, and injectors for conventional accelerators. Although the basic physical mechanisms of ion beam generation in the plasma produced by the laser pulse interaction with the target are common to all these applications, each application requires a specific optimization of the ion beam properties, that is, an appropriate choice of the target design and of the laser pulse intensity, shape, and duration.

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