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Author: Publisher: ISBN: Category : Languages : en Pages : 18
Book Description
In this paper, we discuss modelling of Lyman-[alpha] (i.e. Ly-[alpha]) radiation emitted from laser-produced plasmas. We are interested in the application of one of these line radiations to pump a transition of an ion in a different plasma spatially separated from the emitting source. The interest is in perturbing the plasma rather than just probing it as in some backlighting experiments. As a result of pumping, the populations of certain excited levels are inverted. The resulting gain coefficients depend strongly on the population inversion density which in turn depends on the brightness of the pump radiation. As a result, we must produce an intense bright radiation source. In addition, to pump a transition effectively, we also need a pump line with a width larger than the mismatch of the resonance since the widths of the pumped transitions are rather narrow.
Author: Publisher: ISBN: Category : Languages : en Pages : 18
Book Description
In this paper, we discuss modelling of Lyman-[alpha] (i.e. Ly-[alpha]) radiation emitted from laser-produced plasmas. We are interested in the application of one of these line radiations to pump a transition of an ion in a different plasma spatially separated from the emitting source. The interest is in perturbing the plasma rather than just probing it as in some backlighting experiments. As a result of pumping, the populations of certain excited levels are inverted. The resulting gain coefficients depend strongly on the population inversion density which in turn depends on the brightness of the pump radiation. As a result, we must produce an intense bright radiation source. In addition, to pump a transition effectively, we also need a pump line with a width larger than the mismatch of the resonance since the widths of the pumped transitions are rather narrow.
Author: Hector A. Baldis Publisher: CRC Press ISBN: 9783718654895 Category : Technology & Engineering Languages : en Pages : 116
Book Description
This book covers recent developments in laser plasma physics such as absorption, instability, energy transport and radiation from the standpoint of theory and simulation for plasma corona, showing how the elements for the high density compression depend on the interaction physics and heat transport.
Author: Hector A. Baldis Publisher: CRC Press ISBN: 1000658635 Category : Technology & Engineering Languages : en Pages : 110
Book Description
This book covers recent developments in laser plasma physics such as absorption, instability, energy transport and radiation from the standpoint of theory and simulation for plasma corona, showing how the elements for the high density compression depend on the interaction physics and heat transport.
Author: Dino A. Jaroszynski Publisher: CRC Press ISBN: 9781138114364 Category : Languages : en Pages : 450
Book Description
Collecting contributions from a host of international experts, this compendium presents novel diagnostic methods, experimental techniques, and simulation tools used to study and model laser-plasma interactions. After discussing the basic theory of the interaction of intense electromagnetic radiation fields with matter, it covers three applications of intense fields in plasma: inertial fusion, wakefield accelerators, and advanced radiation sources. The text also examines the underlying phenomena that link certain applications together. With a focus on current research trends, this book guides readers to the brink of the most stimulating challenges in the field.
Author: Maricel Agop Publisher: MDPI ISBN: 3039364138 Category : Computers Languages : en Pages : 104
Book Description
The world of laser matter interaction has known great and rapid advancements in the last few years, with a considerable increase in the number of both experimental and theoretical studies. The classical paradigm used to describe the dynamics of laser produced plasmas has been challenged by new peculiar phenomena observed experimentally, like plasma particles’ oscillations, plume splitting and self-structuring behavior during the expansion of the ejected particles. The use of multiple complementary techniques has become a requirement nowadays, as different aspects can be showcased by specific experimental approaches. To balance these non-linear effects and still remain tributary to the classical theoretical, views on laser produced plasma dynamics novel theoretical models that cover the two sides of the ablation plasma (differentiability and non-differentiability) still need to be developed. Plasma is a strongly nonlinear dynamic system, with many degrees of freedom and other symmetries, favorable for the development of ordered structures, instabilities and transitions (from ordered to chaotic states). In such contexts, we showcased research based on global and local symmetries, complexity and invariance. This special number highlighted exciting new phenomena related to laser produced plasma dynamics with the implementation of theoretical models, towards understanding the complex reality of laser matter interaction.
Author: Yuri Ralchenko Publisher: Springer ISBN: 3319275143 Category : Science Languages : en Pages : 220
Book Description
This book provides a compact yet comprehensive overview of recent developments in collisional-radiative (CR) modeling of laboratory and astrophysical plasmas. It describes advances across the entire field, from basic considerations of model completeness to validation and verification of CR models to calculation of plasma kinetic characteristics and spectra in diverse plasmas. Various approaches to CR modeling are presented, together with numerous examples of applications. A number of important topics, such as atomic models for CR modeling, atomic data and its availability and quality, radiation transport, non-Maxwellian effects on plasma emission, ionization potential lowering, and verification and validation of CR models, are thoroughly addressed. Strong emphasis is placed on the most recent developments in the field, such as XFEL spectroscopy. Written by leading international research scientists from a number of key laboratories, the book offers a timely summary of the most recent progress in this area. It will be a useful and practical guide for students and experienced researchers working in plasma spectroscopy, spectra simulations, and related fields.
Author: J. J. Duderstadt Publisher: ISBN: Category : Languages : en Pages : 54
Book Description
The interaction of a high power CO2 laser with a dense plasma is investigated. Stimulated Brillouin scattering and thermal self-focusing of the incident beam is studied. The dynamics of a strongly turbulent plasma generated by laser-plasma interaction, and the behavior of nonlinear waves (solitons) in the plasma is analyzed. Advanced MHD plasma simulation models are employed to study the complex dynamics of nonequilibrium plasmas interacting with laser radiation. MHD computer codes capable of simulating exploding wire or pinch dynamics subjected to intense laser irradiation are developed. Radiation transport effects, such as X-ray line emission and re-absorption in optically thick regions of the plasma, are incorporated in the MHD computer code. (Author).
Author: H. Hora Publisher: Springer Science & Business Media ISBN: 1461538041 Category : Technology & Engineering Languages : en Pages : 647
Book Description
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: 
Author: 
Author: Hector A. Baldis
Author: Hector A. Baldis
Author: Dino A. Jaroszynski
Author: Maricel Agop
Author: Yuri Ralchenko
Author: J. J. Duderstadt
Author: Philip Bernard Holden
Author: H. Hora
Author: Fraser Martin Kerr