Parametric Instabilities in U.V. Laser-produced Plasmas PDF Download
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Author: Kazuo A. Tanaka
Publisher:
ISBN:
Category :
Languages : en
Pages : 246
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Author: Kazuo A. Tanaka
Publisher:
ISBN:
Category :
Languages : en
Pages : 246
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Author: Laszlo Veisz
Publisher:
ISBN: 9783836456562
Category : Science
Languages : de
Pages : 112
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Laser-produced plasmas play an important role in plasma physics and fusion research. Parametric instabilities are the most important processes governing the laser-plasma interaction. Some parametric instabilities as two-plasmon decay or stimulated Raman scattering were investigated in this work using an optical signal, the so called 3/2 harmonics. As this harmonic originates from the plasma its characteristics provide important information about the plasma properties. The angular, spectral and temporal structure of this 3/2 harmonics were studied. Detailed theoretical analysis was made based on a new model to explain the measured results and to gain information about the generation process and the plasma.
Author: László Veisz
Publisher:
ISBN:
Category :
Languages : en
Pages : 200
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 310
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Author:
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ISBN:
Category :
Languages : en
Pages :
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The purpose of this LDRD was the study of parametric instabilities on a laser-produced plasma, addressing crucial issues affecting the coupling between the laser and the plasma. We have made very good progress during these three years, in advancing our understanding in many different fronts. Progress was made in both theoretical and experimental areas. The coupling of high-power laser light to a plasma through scattering instabilities is still one of the most complex processes in laser-plasma interaction physics. In spite of the relevance of these parametric processes to inertial confinement fusion (ICF) and all other situations where a high-power laser beam couples to a plasma, many aspects of the interaction remain unexplained, even after many years of intensive experimental and theoretical efforts. Important instabilities under study are stimulated Brillouin scattering (SBS), stimulated Raman scattering (SRS), and the Langmuir decay instability (LDI). The study of these instabilities is further complicated by the competition and interplay between them, and, in the case of ICF, by the presence of multiple overlapping interaction beams. Stimulated Brillouin scattering consists of the decay of the incident electromagnetic (EM) wave into a scattered EM wave and an ion acoustic wave (IAW). Similarly, SRS consists of the decay of the incident EM wave into a scattered EM wave and an electron plasma wave (EPW). Langmuir decay instability is the further decay of an EPW into a secondary EPW and an IAW. The principal areas of research covered during this three-year period were the following: a) Modeling of Parametric Instabilities in Speckles b) Langmuir Decay Instability c) Non Maxwellian Plasmas d) Multiple Interaction Beams e) SBS from Speckle Distributions.
Author: William Kruer
Publisher: CRC Press
ISBN: 1000754464
Category : Science
Languages : en
Pages : 176
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This book focuses on the physics of laser plasma interactions and presents a complementary and very useful numerical model of plasmas. It describes the linear theory of light wave propagation in plasmas, including linear mode conversion into plasma waves and collisional damping.
Author: Shelly Nuruzzaman
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Author: H. Hora
Publisher: Springer Science & Business Media
ISBN: 1461538041
Category : Technology & Engineering
Languages : en
Pages : 647
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The 9th International Workshop on "Laser Interaction and Related Plasma Phenomena" was held November 6-10, 1989, at the Naval Postgraduate School, Monterey, Cal ifornia. Starting in 1969, thi s represents a continuation of the longest series of meetings in this field in the United States. It is, in fact, the longest series anywhere with published Proceedings that document the advances and the growth of this dynamic field of physics and technology. Following the discovery of the laser in 1960, the study of processes involved in laser beam interactions with materials opened a basically new dimension of physics. The energy densities and intensities generated are many orders of magnitude beyond those previously observed in laboratories. Simultaneously, the temporal dynamics of this interaction covers a broad range, only recently reaching ultra short times, of the order of a few femtoseconds. Applications of this technology are of interest for many types of material treatments. Further, from the very beginning, a key ambitious goal has been to produce fusion energy by intense laser irradiation of a target containi ng appropriate fusion fuels. The vari ous phenomena discovered during the ensuing research on laser-fusion are, indeed, much more complex than originally expected. However, in view of recent advances in physics understanding, a route to successful laser fusion can be seen. The development of fusion energy received a very strong stimulation since the last workshop due to the now partially publicized results of underground nuclear explosions.
Author: A. C. Machacek
Publisher:
ISBN:
Category : Laser-plasma interactions
Languages : en
Pages : 344
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Author:
Publisher:
ISBN:
Category : Controlled fusion
Languages : en
Pages : 170
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