Download or read book K shell Line Radiation from Laser produced Aluminum Plasmas written by K. Whitney and published by . This book was released on 1973 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt: Two rate equation models are developed to describe the emission of K-line radiation from laser-produced aluminum plasmas. In the first model, the temperature of the electrons is a freely variable quantity; whereas, in the second model, it is computed from a kinetic energy equation in which phenomenological terms representing thermal conduction and laser energy absorption are introduced. The latter model predicts X-ray emission from a hot-spot of plasma in close agreement with observations from an experiment initiated by focusing 1.9 J of neodymium radiation in a 1/4 nanosecond pulse onto an aluminum target. Computer solutions to the rate equation model are obtained for a number of different prescribed time variations of the electron temperature. These solutions are compared to a similar set of solutions to a coronal model. It is found that these two sets of solutions differ significantly whenever the electron temperature varies rapidly over subnanosecond periods and the aluminum plasma has not been overheated and driven to the state of total ionization. (Author).
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1988 with total page 968 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book K shell Emission from 140 Femtosecond Laser produced Plasmas Created from Porous Aluminum Targets written by and published by . This book was released on 1992 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: The K-shell emission from flat and porous aluminum targets is used to infer the efficiency of creating a high temperature (>100eV), thermal plasma with 800 nm, 140 fs laser light. The K-shell emission from flat aluminum targets is fond to be significantly less than that of the porous targets, implying a lower temperature and less efficient coupling between the target and ultra-short pulse laser light.
Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1974 with total page 692 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Hearings and Reports on Atomic Energy written by United States. Congress. Joint Committee on Atomic Energy and published by . This book was released on 1975 with total page 2042 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Physics of Laser Plasmas and Applications Volume 2 written by Hideaki Takabe and published by Springer Nature. This book was released on with total page 467 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Lasers Induced Plasmas and Applications written by Leon J. Radziemski and published by CRC Press. This book was released on 2020-09-11 with total page 474 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book discusses the physics of plasma initiation and reviews the features of dissipating, propagating plasmas. It deals with advances in diagnostics for high-energy, laser-fusion plasmas. The book reviews the basic physical processes, plasma characteristics of the "continuous optical discharge".
Download or read book Laser Interaction and Related Plasma Phenomena written by H. Hora and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 647 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Government Reports Announcements written by and published by . This book was released on 1973 with total page 670 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Review written by and published by . This book was released on 1970 with total page 710 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Review Naval Research Laboratory Washington D C written by United States. Office of Naval Research and published by . This book was released on with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Annual Report written by and published by . This book was released on with total page 876 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Laser generated and Other Laboratory X ray and EUV Sources Optics and Applications written by George A. Kyrala and published by SPIE-International Society for Optical Engineering. This book was released on 2004 with total page 468 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of SPIE present the original research papers presented at SPIE conferences and other high-quality conferences in the broad-ranging fields of optics and photonics. These books provide prompt access to the latest innovations in research and technology in their respective fields. Proceedings of SPIE are among the most cited references in patent literature.
Download or read book Nonequilibrium Processes in Partially Ionized Gases written by M. Capitelli and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 682 pages. Available in PDF, EPUB and Kindle. Book excerpt: The NATO . Advanced Research Insti tute on Nonequilibrium Processes in Partially Ionized Gases was held at Acquafredda di Maratea during 4-17 June 1989. The Institute considered the interconnections between scattering and transport theories and modeling of nonequilibrium systems generated by electrical discharges, emphasizing the importance of microscopic processes in affecting the bulk properties of plasmas. The book tries to reproduce these lines. In particular several contributions describe scattering cross sections involving electrons interacting with atoms and molecules in both ground and excited states (from theoretical and experimental point of view), of energy transfer processes as well as reactive ones involving excited molecules colliding with atoms and molecules as well as with metallic surfaces. Other contributions deal with the basis of transport theories (Boltzmann and Monte Carlo methods) for describing the bulk properties of non equilibrium plasmas as well as with the modeling of complicated systems emphasizing in particular the strong coupling between the Boltzmann equation and excited state kinetics. Finally the book contains several contributions describing applications in different fields such as Excimer Lasers, Negative Ion Production, RF Discharges, Plasma Chemistry, Atmospheric Processes and Physics of Lamps. The Organizing Committee gratefully acknowledges the generous financial support provided by the NATO Science Committee as well as by Azienda Autonoma di Soggiorno e Turismo of Maratea, by University of Bari, by C. N. R. (Centro di Studio per la Chimica dei Plasmi and Comitato per la Chimica), by ENEA, by Lawrence Livermore Laboratory and by US Army Research Office.
Download or read book Journal of Current Laser Abstracts written by and published by . This book was released on 1973 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Detailed Hydrodynamic and X Ray Spectroscopic Analysis of a Laser Produced Rapidly Expanding Aluminum Plasma written by and published by . This book was released on 2001 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt: We present a detailed analysis of K-shell emission from laser-produced rapidly-expanding aluminum plasmas. This work forms part of a series of experiments performed at the Vulcan laser facility of the Rutherford Appleton Laboratory, UK. 1-D planar expansion was obtained by over-illuminating Al-microdot targets supported on CH plastic foils. The small size of the Al-plasma ensured high spatial and frequency resolution of the spectra, obtained with a single crystal spectrometer, two vertical dispersion variant double crystal spectrometers, and a vertical dispersion variant Johann Spectrometer. The hydrodynamic properties of the plasma were measured independently by spatially and temporally resolved Thomson scattering, utilizing a 4[omega] probe beam. This enabled sub- and super- critical densities to be probed relative to the 1[omega] heater beams. The deduced plasma hydrodynamic conditions are compared with those generated from the 1-D hydro-code Medusa, and the significant differences found in the electron temperature discussed. Synthetic spectra generated from the detailed term collisional radiative non-LTE atomic physics code Fly are compared with the experimental spectra for the measured hydrodynamic parameters, and for those taken from Medusa. Excellent agreement is only found for both the H- and He-like Al series when careful account is taken of the temporal evolution of the electron temperature.
Download or read book ERDA Authorizing Legislation Fiscal Year 1976 Fission power reactor development Laser and electron beam pellet fusion March 11 and 13 1975 written by United States. Congress. Joint Committee on Atomic Energy and published by . This book was released on 1975 with total page 1186 pages. Available in PDF, EPUB and Kindle. Book excerpt:
