Download or read book Stability and Symmetry in Inertial Confinement Fusion written by M. H. Emery and published by . This book was released on 1982 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: The asymmetries of spherical implosions driven by direct laser illuminations are of fundamental concern to the inertial confinement fusion community because they provide severe limitations on high gain pellet designs. Theoretical progress on several fronts has recently been made through numerical simulations in providing a more complete understanding of the physical processes involved in these asymmetries and instabilities. The results also suggest methods of controlling these processes and their implications for laser fusion systems design. Stability and symmetry issues have been investigated. Laser matter coupling and scaling laws relating the asymmetry results to spherical pellet designs have been investigated. Principle results include finding (1) the requirements for thermal smoothing of laser nonuniformities, (2) reduced Rayleigh-Taylor growth rates and saturation via the nonlinear Kelvin-Helmholtz roll-up, (3) that perturbation wavelengths greater than the shell thicknesses are most likely to cause an asymmetric implosion, (4) a new theory based on vortex shedding that explains the reduced linear Rayleigh-Taylor growth rates and (5) a possible wavelength-intensity window for direct illumination where the requirements of pellet velocity, symmetry, and efficiency necessary for high gain can be simultaneously met.

Download or read book Two dimensional Simulation of Hydrodynamic Symmetry and Stability Processes Relevant to Inertial Confinement Fusion written by S. Atzeni and published by . This book was released on 1984 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Assessment of Inertial Confinement Fusion Targets written by National Research Council and published by National Academies Press. This book was released on 2013-07-17 with total page 119 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the fall of 2010, the Office of the U.S. Department of Energy's (DOE's) Secretary for Science asked for a National Research Council (NRC) committee to investigate the prospects for generating power using inertial confinement fusion (ICF) concepts, acknowledging that a key test of viability for this concept-ignition -could be demonstrated at the National Ignition Facility (NIF) at Lawrence Livermore National Laboratory (LLNL) in the relatively near term. The committee was asked to provide an unclassified report. However, DOE indicated that to fully assess this topic, the committee's deliberations would have to be informed by the results of some classified experiments and information, particularly in the area of ICF targets and nonproliferation. Thus, the Panel on the Assessment of Inertial Confinement Fusion Targets ("the panel") was assembled, composed of experts able to access the needed information. The panel was charged with advising the Committee on the Prospects for Inertial Confinement Fusion Energy Systems on these issues, both by internal discussion and by this unclassified report. A Panel on Fusion Target Physics ("the panel") will serve as a technical resource to the Committee on Inertial Confinement Energy Systems ("the Committee") and will prepare a report that describes the R&D challenges to providing suitable targets, on the basis of parameters established and provided to the Panel by the Committee. The Panel on Fusion Target Physics will prepare a report that will assess the current performance of fusion targets associated with various ICF concepts in order to understand: 1. The spectrum output; 2. The illumination geometry; 3. The high-gain geometry; and 4. The robustness of the target design. The panel addressed the potential impacts of the use and development of current concepts for Inertial Fusion Energy on the proliferation of nuclear weapons information and technology, as appropriate. The Panel examined technology options, but does not provide recommendations specific to any currently operating or proposed ICF facility.

Download or read book Nuclear Fusion by Inertial Confinement written by Guillermo Velarde and published by CRC Press. This book was released on 2020-11-25 with total page 766 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nuclear Fusion by Inertial Confinement provides a comprehensive analysis of directly driven inertial confinement fusion. All important aspects of the process are covered, including scientific considerations that support the concept, lasers and particle beams as drivers, target fabrication, analytical and numerical calculations, and materials and engineering considerations. Authors from Australia, Germany, Italy, Japan, Russia, Spain, and the U.S. have contributed to the volume, making it an internationally significant work for all scientists working in the Inertial Confinement Fusion (ICF) field, as well as for graduate students in engineering and physics with interest in ICF.

Download or read book An Introduction to Inertial Confinement Fusion written by Susanne Pfalzner and published by CRC Press. This book was released on 2006-03-02 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt: Newcomers to the field of inertial confinement fusion (ICF) often have difficulty establishing a clear picture of the overall field. The reason for this is because, while there are many books devoted to special topics within the field, there is none that provides an overview of the field as a whole. An Introduction to Inertial Confinement Fusion fi

Download or read book Fusion Energy Update written by and published by . This book was released on 1986 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Plasma Physics and Controlled Nuclear Fusion Research 1994 written by International Atomic Energy Agency and published by . This book was released on 1995 with total page 754 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of the Fifteenth International Conference held in Seville, 26 September to 1 October 1994. The conference was characterized by valuable scientific results on virtually all aspects of controlled fusion and fusion technology, laying a solid foundation for continued progress. The proceedings include all the technical papers, the pertinent discussions, and five conference summaries which are published as a separate volume.

Download or read book Energy Research Abstracts written by and published by . This book was released on 1994-12 with total page 508 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Shock Obliquity and Stability in Inertial Confinement Fusion written by Patrick N. Diamond and published by . This book was released on 1993 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book ERDA Energy Research Abstracts written by and published by . This book was released on 1983 with total page 668 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Physics of Inertial Fusion written by Stefano Atzeni and published by OUP Oxford. This book was released on 2004-06-03 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is on inertial confinement fusion, an alternative way to produce electrical power from hydrogen fuel by using powerful lasers or particle beams. It involves the compression of tiny amounts (micrograms) of fuel to thousand times solid density and pressures otherwise existing only in the centre of stars. Thanks to advances in laser technology, it is now possible to produce such extreme states of matter in the laboratory. Recent developments have boosted laser intensities again with new possibilities for laser particle accelerators, laser nuclear physics, and fast ignition of fusion targets. This is a reference book for those working on beam plasma physics, be it in the context of fundamental research or applications to fusion energy or novel ultra-bright laser sources. The book combines quite different areas of physics: beam target interaction, dense plasmas, hydrodynamic implosion and instabilities, radiative energy transfer as well as fusion reactions. Particular attention is given to simple and useful modelling, including dimensional analysis and similarity solutions. Both authors have worked in this field for more than 20 years. They want to address in particular those teaching this topic to students and all those interested in understanding the technical basis.

Download or read book Inertial Confinement Fusion written by James J. Duderstadt and published by John Wiley & Sons. This book was released on 1982 with total page 380 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Inertial Confinement Fusion Driven Thermonuclear Energy written by Bahman Zohuri and published by Springer. This book was released on 2017-01-26 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book takes a holistic approach to plasma physics and controlled fusion via Inertial Confinement Fusion (ICF) techniques, establishing a new standard for clean nuclear power generation. Inertial Confinement Fusion techniques to enable laser-driven fusion have long been confined to the black-box of government classification due to related research on thermonuclear weapons applications. This book is therefore the first of its kind to explain the physics, mathematics and methods behind the implosion of the Nd-Glass tiny balloon (pellet), using reliable and thoroughly referenced data sources. The associated computer code and numerical analysis are included in the book. No prior knowledge of Laser Driven Fusion and no more than basic background in plasma physics is required.

Download or read book Inertial Confinement Fusion written by Keith A. Brueckner and published by American Institute of Physics. This book was released on 1992 with total page 486 pages. Available in PDF, EPUB and Kindle. Book excerpt: Market: Students and professionals in plasma and energy research. A cohesive assessment of current and future research trends in what may be the most challenging area of contemporary energy research. This work is edited by K.A. Brueckner--one of the pioneers in inertial confinement fusion--and examines the latest thinking regarding worldwide research in driver energy deposition, thermal and suprathermal electron transport, ICF diagnostics, and targets, drivers, and reactors.

Download or read book Plasma Physics and Controlled Nuclear Fusion Research written by and published by . This book was released on 1992 with total page 588 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Implosion Stability and Symmetry Analysis of OMEGA Direct drive Implosions Using Spectrally resolved Imaging written by Heather Marie Johns and published by . This book was released on 2013 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract Line absorption spectroscopy of Ti-doped tracer layers embedded in the shell of inertial confinement fusion targets is a powerful diagnostic to characterize the state of the un-ablated and compressed shell that confines the hot and dense core fuel. In this dissertation we investigate two applications of this diagnostic to warm shell implosion experiments performed at the OMEGA national laser user facility that provide new insights about implosion symmetry, stability and mixing. This was accomplished through two groups of experiments and different types of data processing and analysis. In a first group of experiments, streaked high-spectral resolution but spatially integrated measurements were recorded with a crystal spectrometer to determine the time-history of electron temperature and density, ionization state and areal density for tracer layers initially located at several depths from the shell's inner surface. This analysis included, for the first time, the effect of self-emission of Ti K-shell line transitions. We found that the self-emission is important for tracer layers located close to the core, and has to be taken into account in order to obtain accurate values of temperature and density; but this effect is less important for tracer layers initially placed farther from the core, for which the self-emission may be neglected and analysis of transmission is sufficient to model and interpret the absorption spectrum. This finding is consistent with the idea that regions of the shell close to the core are more significantly heated by thermal transport out of the hot dense core, but more distant regions will remain at lower temperatures because they are less affected by thermal transport. In a second group of experiments, arrays of spectrally-resolved images were recorded with a novel multi-monochromatic x-ray imager: the MMI instrument. The MMI affords simultaneous time-gated (snapshots), spatial- (based on pinholes) and spectral- (multi-layer Bragg mirror dispersive element) resolution. While the spectral resolution of MMI is not as high as that of the crystal spectrometer it is sufficient to extract spatially resolved areal density maps. In this regard, two independent methods were developed to extract these maps, one based on ratios of narrow-band images, and the other based on sets of spatially-resolved spectra. In addition, the observations were made with three identical MMI instruments fielded along three quasi-orthogonal lines-of-sight, hence providing insight into the 3-D nature of the implosion. A Fourier analysis of the areal density maps was performed to unfold their wavelength spectrum and to obtain the power per mode. In turn, this led to the determination of the target breakup fraction and a new method for estimation of the mix width. Results are presented and discussed for experiments that were done using different laser pulse shapes, shell thicknesses and gas filling pressures, and initial location of the Ti-doped tracer layer. Comparison of results from each line of sight that were taken at the same time in the implosion allowed us to determine the relative symmetry and stability of each implosion, in terms of the strength of the confinement the compressed shell was able to provide. We found that implosions driven with lower adiabat drive pulse shapes had better symmetry and stability in the compressed shell than higher adiabat pulse shapes. Additionally, for targets driven with low-adiabat pulses, Ti-doped layers initially placed closer to the fuel-shell interface had higher stability than those that were placed farther away, by the time of peak compression. Even though the low adiabat drives display more evidence of mixing early in time as the Ti-doped layer is placed closer to the core, the final mix width estimate, by the time of peak compression, is less affected. We show that our mix width estimate obtains reasonable values, based on comparison with other studies of mix width from nominally identical implosions, which is an important proof of concept for this new method.