Spectral Measurements of X-rays and Electrons Emitted from 1. 06. Mu. M Laser Produced Plasmas
Spectral Measurements of X-rays and Electrons Emitted from 1. 06. Mu. M Laser Produced Plasmas

Author:

Publisher:

Published: 1975

Total Pages:

ISBN-13:

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Absolute spectral measurements were made of electrons escaping from plasmas produced by focusing 5-10 J, 50-100 picosecond, 1.06 .mu.m laser pulses on 10 .mu.m thick Parylene disk targets. Nine spectral bands with 3 to 7.5 keV resolution were obtained from 30 to 190 keV using a 90° focusing permanent magnet spectrometer and appropriately positioned silicon electron detectors.

Advances In Laser Interaction With Matter And Inertial Fusion
Advances In Laser Interaction With Matter And Inertial Fusion

Author: G Velarde

Publisher: World Scientific

Published: 1997-12-04

Total Pages: 714

ISBN-13: 9814545686

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This book collects together theoretical and experimental contributions on laser-plasma interaction and dynamics, together with the physics of laser fusion, coronal, hydrodynamics (instabilities), radiation hydrodynamics and atomic physics. Theory and experiments are reviewed. In addition to diagnostics, indirect drive modeling and experiments are reported, as well as approaches of direct drive foam-buffered targets for uniform compression. New ideas on triggering ignition and use of advanced fuels for neutronless fusion are also reported. The short-pulse ultra-intense laser interaction is extensively represented both theoretically and experimentally. The two major laser-fusion ignition projected facilities (2 MJ class). National Ignition Facility (NIF) / USA and Laser Megajoule (LMJ) / France, are also disscused.

Be Beryllium
Be Beryllium

Author: Gudrun Bär

Publisher: Springer Science & Business Media

Published: 2013-06-29

Total Pages: 293

ISBN-13: 3662103206

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The present Supplement Volume Beryllium A 3 continues and completes the description of the physical properties of the element, begun in Supplement Volume A 2, 1991, and also treats the electrochemical behavior of the metal. The unique combination of the Be properties, which was pointed out in Supplement Volume A 2, is also demonstrated in the following chapters of this Volume A 3: 13. Electrical Properties 14. Electronic Properties 15. Optical Properties. Emission and Impact Phenomena 16. Electrochemical Behavior Starting with the electrical properties, Be isarather good electrical conductor in centrast to what might be expected. Superconductivity was studied, especially on films. Quantum effects, which are more pronounced in Be than in most other metals, are the reason for numerous in vestigations of the magnetoresistance and the magnetic-breakdown effect. The basis for many of the characteristic properties is the unique nature of bonding in Be as a consequence of its peculiar electronic structure and the special shape of its Fermi surface which also gave rise to further numerous studies. Detailed cluster calculations were per formed to better understand the bonding in the metal. Regarding the optical properties, the high reflectivity of Be, particularly in the infrared region, makes it attractive for the fabrication of precision optical surfaces (mirrors); it is also useful for solar-collector surfaces in spacecraft applications. Emission and electron-and ion impact phenomena as well as neutron optics are also discussed.

Emission of Energetic Electrons from a Nd-Laser-Produced Plasma
Emission of Energetic Electrons from a Nd-Laser-Produced Plasma

Author: C. M. Armstrong

Publisher:

Published: 1978

Total Pages: 24

ISBN-13:

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Absolute spectral measurements of 50-500 keV electrons emitted from a Nd-laser-produced plasma are presented. For normally incident irradiation (10 to the 15th power to 10th to the 16th power W/sq.cm.) onto polystyrene slab targets a total emission of about 10 to the 10th power electrons is inferred with a total emitted energy of about 0.2 mJ. The electron emission is observed to be almost the same both in and out of the plane of polarization. Properties of the emitted spectrum, such as spectral hardness and intensity are observed to be dependent on pulse shape and target material. (Author).

Laser Interaction and Related Plasma Phenomena
Laser Interaction and Related Plasma Phenomena

Author: Helmut J. Schwarz

Publisher: Springer Science & Business Media

Published: 2012-12-06

Total Pages: 913

ISBN-13: 1461573351

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The 7th International Workshop in the series LASER INTERACTION AND RELATED PLASMA PHENOMENA continued the high standards established by the earlier meetings in this series. It was organized under the directorship of Heinrich Hora and George H. Miley at the Naval Postgraduate School in Monterey, California, with Fred Schwirzke as the local organizer. These workshops have presented many "firsts" in laser plasma interactions and especially in laser fusion. Some presentations provided continuity with the past, most represented advancements; however, in some workshops, progress did not appear to be occurring as rapidly as in others. Therefore, it was a special pleasure that in the present workshop when, on October 30, 1985, Chiyoe Yamanaka disclosed a breakthrough in the generation of fusion neutrons with laser fusion targets. The 7th Workshop also continued to represent other new fields of laser-plasma interaction. The progress reported was most pronounced in the fields of X-ray lasers, laser acceleration of particles by electrostatic double layers in plasmas, and a particle beam technique to solve the geometric problem of muon-catalyzed fusion. The development of laser-plasma interactions at medium to high laser intensities may be seen in its whole complexity from a brief review of prior conferences. At the first Workshop in 1969, a comprehensive review of the field was presented by the speakers with the opening address by N.