Demonstration of the First Visible Wavelength Direct Nuclear Pumped Laser. [He-Hg]. PDF Download
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Author: Publisher: ISBN: Category : Languages : en Pages :
Book Description
The first direct nuclear pumped laser to operate on a visible wavelength is described, whereas previous nuclear lasers have operated in the infrared. The Sandia Pulsed Reactor II was used as a high flux source of neutrons that pumped a helium-mercury gas laser via the high energy products of the /sup 10/B(n, .cap alpha.)/sup 7/Li nuclear reaction. No other source of energy was utilized. Lasing was observed at 6150 A, corresponding to the 7/sup 2/P/sub 3/2/--7/sup 2/S/sub /sup 1///sub 2// mercury ion transition. The thermal neutron flux threshold for lasing was approximately 1 x 10/sup 16/n/cm/sup 2/-sec, and the laser output was continuous over the 400 .mu.sec operating time of the nuclear reactor. The laser signal appeared to increase linearly with the thermal neutron flux, up to 5.8 x 10/sup 16/n/cm/sup 2/-sec, the highest flux used.
Author: Publisher: ISBN: Category : Languages : en Pages :
Book Description
The first direct nuclear pumped laser to operate on a visible wavelength is described, whereas previous nuclear lasers have operated in the infrared. The Sandia Pulsed Reactor II was used as a high flux source of neutrons that pumped a helium-mercury gas laser via the high energy products of the /sup 10/B(n, .cap alpha.)/sup 7/Li nuclear reaction. No other source of energy was utilized. Lasing was observed at 6150 A, corresponding to the 7/sup 2/P/sub 3/2/--7/sup 2/S/sub /sup 1///sub 2// mercury ion transition. The thermal neutron flux threshold for lasing was approximately 1 x 10/sup 16/n/cm/sup 2/-sec, and the laser output was continuous over the 400 .mu.sec operating time of the nuclear reactor. The laser signal appeared to increase linearly with the thermal neutron flux, up to 5.8 x 10/sup 16/n/cm/sup 2/-sec, the highest flux used.
Author: Publisher: ISBN: Category : Aeronautics Languages : en Pages : 880
Book Description
Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Author: Marvin J. Weber Publisher: CRC Press ISBN: 1420050176 Category : Technology & Engineering Languages : en Pages : 1224
Book Description
Lasers continue to be an amazingly robust field of activity. Anyone seeking a photon source is now confronted with an enormous number of possible lasers and laser wavelengths to choose from, but no single, comprehensive source to help them make that choice. The Handbook of Lasers provides an authoritative compilation of lasers, their properties, and original references in a readily accessible form. Organized by lasing media-solids, liquids, and gases-each section is subdivided into distinct laser types. Each type carries a brief description, followed by tables listing the lasing element or medium, host, lasing transition and wavelength, operating properties, primary literature citations, and, for broadband lasers, reported tuning ranges. The importance and value of the Handbook of Lasers cannot be overstated. Serving as both an archive and as an indicator of emerging trends, it reflects the state of knowledge and development in the field, provides a rapid means of obtaining reference data, and offers a pathway to the literature. It contains data useful for comparison with predictions and for developing models of processes, and may reveal fundamental inconsistencies or conflicts in the data.
Author: Helmut J. Schwarz Publisher: Springer Science & Business Media ISBN: 1468481037 Category : Science Languages : en Pages : 667
Book Description
Since the third Workshop on "Laser Interaction and Related Plasma Phenomena" in 1973, one area within the scope of this con ference received increased attention: laser fusion. This possi bility was emphasized in February 1977 in a Seminar on US energy policies at The Hartford Graduate Center by John F. O'Leary, Head of the Federal Energy Administration, who said that "by the year 2100, ••• laser fusion will be coming along, giving us a new age of choice". Efforts in research and development were stepped up to investigate new concepts of laser ignition of controlled nuclear reactions. Here, one expects no radioactive waste from fuel. Th~ deuterium-tritium reaction - the only one which may be possible with magnetic field confinement in tokamaks - has a highly radio active tritium cycle, while, in principle, laser reactions are possible with pure deuterium, hydrogen-boron or others. The worldwide progress in laser compression was not only stim ulated by the energy crisis, but also by its advancements. In our first Workshop in 1969 F. Floux of the French Limeil Laboratories described his experiments, which led, only one month later, to the production of fusion neutrons in such large numbers as had not been achieved up to then (see appendix of Vol. I these Proceedings).
Author: United States. Energy Research and Development Administration. Technical Information Center Publisher: ISBN: Category : Force and energy Languages : en Pages : 1682
Author: S. Nakai Publisher: American Institute of Physics ISBN: 9781563964459 Category : Technology & Engineering Languages : en Pages : 680
Book Description
Papers from the April 1995 conference (formerly called a "workshop") are contained in two volumes. The first volume (623-9) comprises contributions arranged in sections on ICF programs and energy drivers; critical elements for ignition--target experiment, physics, and design; laser-matter interaction physics; and high intensities, short pulse interactions. The second volume (624-7) begins with papers on optical technologies and various kinds of lasers--free electron, LD and LD pumped, gas, nuclear pumped, and short pulse. Following these are sections on particle beams--light and heavy ion beam fusions; and applications of laser and plasma. Edward Teller Award lectures complete the proceedings. Not indexed by subject (contains only an author "index"). Annotation copyrighted by Book News, Inc., Portland, OR
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Author: 
Author: Marvin Alfred Akerman
Author: Marvin Alfred Akerman
Author: 
Author: Marvin J. Weber
Author: Helmut J. Schwarz
Author: United States. Energy Research and Development Administration. Technical Information Center
Author: 
Author: United States. Energy Research and Development Administration
Author: S. Nakai