Download or read book Production and Extraction of Polarized Electrons from an Optically Pumped Helium Discharge written by Raymond James Vandiver and published by . This book was released on 1994 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Polarized electron sources are needed to study the spin dependent processes in atomic and molecular systems. This area of physics has enjoyed much success in the past decade due to the development of polarized electron sources of high electron polarization and current. We have investigated the production and extraction of polarized electrons from an optically pumped helium discharge. We have directly extracted electrons with polarizations between 6% and 7% at currents greater than 200 [mu]A from a helium DC discharge where the helium 23S1 metastable atoms are optically pumped to nearly 100% polarization. These high metastable polarizations are achieved using recently developed, high power lasers tunable through the relevant He transitions and the development of a cross beam polarization enhancement technique. The polarized electrons are produced via coulombic interactions involving the polarized He metastable atoms within an active discharge. A single mode probe laser, appropriately tuned, oriented and polarized is used to interrogate the individual Zeeman levels to obtain the absolute polarization of the metastable ensemble. The polarization of the extracted electrons is measured with a new in-line neon polarimeter"--Abstract, leaf iii
Download or read book Atomic Physics 3 written by Stephen Smith and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 669 pages. Available in PDF, EPUB and Kindle. Book excerpt: Session A.- Status of QED Experiments.- Status of Quantum Electrodynamics Theory.- Atomic Physics and Quantum Electrodynamics in the Infinite Momentum Frame.- Theories of the Fine Structure Constant ?.- gJ(H)/gS(e) Determination: Preliminary Results.- Session B.- Exotic Atoms.- Highly Excited States of Helium and Neon.- Theoretical Study of Atomic Rydberg States.- Inner-Shell Ionization by Heavy Charged Particles.- Fine Structure and Hyperfine Structure of the Helium Negative Ion.- Statistical Theory of Atom and Ion Polarizabilities.- Session C.- Ab Initio Calculations of Atomic Energy Spectra.
Download or read book Atomic Physics 5 written by Richard Marrus and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 569 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Fifth International Conference on Atomic Physics was held July 26-30, 1976 in Berkeley, California. Invited talks were solicited which were representative of the most important developments since the fourth conference held in Heidelberg, Germany in 1974. In this volume, we have collected the manuscripts of the invited speakers, in the belief that they represent a guide to contemporary re search in atomic physics. Experimental work on such topics as the search for parity violation, spectroscopy and collision processes of fast, highly-stripped heavy ions, exotic atoms, high-Rydberg states, laser spectros copy, photoelectron spectroscopy, and others are described. The work described in these manuscripts is a clear mea sure of the continued vitality of our field. One unhappy event since the last conference was the passing of Dr. Victor William (Bill) Cohen (1911-1974) of Brookhaven National Laboratory. Bill was one of the scientists who recognized early the need for personal communication among atomic physicists and was the prime mover in establishing the present international conference series. Everyone who has enjoyed the stimulation of these conferences is indebted to Bill Cohen, and we dedicate this volume of the proceedings to his memory.
Download or read book Polarized Electrons written by J. Kessler and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book deals with the physics of spin-polarized free electrons. Many aspects of this rapidly expanding field have been treated in review articles, but to date a self-contained monograph has not been available. In writing this book, I have tried to oppose the current trend in science that sees specialists writing primarily for like-minded specialists, and even physicists in closely related fields understanding each other less than they are inclined to admit. I have attempted to treat a modern field of physics in a style similar to that of a textbook. The presentation should be intelligible to readers at the graduate level, and while it may demand concentration, I hope it will not require decipher ing. If the reader feels that it occasionally dwells upon rather elementary topics, he should remember that this pedestrian excursion is meant to be reasonably self-contained. It was, for example, necessary to give a simple introduction to the Dirac theory in order to have a basis for the discussion of Mott scattering-one of the most important techniques in polarized electron studies.
Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1976-05 with total page 912 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dissertation Abstracts International written by and published by . This book was released on 2003 with total page 730 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Physics of Ionized Gases 1972 written by M. V. Kurepa and published by . This book was released on 1972 with total page 838 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1987 with total page 1126 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Atomic Physics written by and published by . This book was released on 1972 with total page 694 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Development and Applications of Negative Ion Sources written by Vadim Dudnikov and published by Springer Nature. This book was released on 2019-10-18 with total page 346 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes the development of sources of negative ions and their application in science and industry. It describes the physical foundations and implementation of the key methods of negative ion production and control, such as charge exchange, thermionic emission, secondary emission (sputtering) and surface-plasma sources, as well as the history of their development. Following on from this essential foundational material, the book goes on to explore transport of negative ion beams, and beam-plasma instabilities. With exposition accessible at the graduate level, and a comprehensive bibliography, this book will appeal to all students and researchers whose work concerns ion sources and their applications to accelerators, beam physics, storage rings, cyclotrons, and plasma traps.
Download or read book Advances in Atomic and Molecular Physics written by and published by Academic Press. This book was released on 1981-08-17 with total page 403 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advances in Atomic and Molecular Physics
Download or read book INIS Atomindex written by and published by . This book was released on 1996 with total page 730 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book American Doctoral Dissertations written by and published by . This book was released on 1994 with total page 800 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book International Conference on the Physics of Electronic and Atomic Collisions written by and published by . This book was released on 1989 with total page 976 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book High Energy Spin Physics written by Karl-Heinz Althoff and published by Springer. This book was released on 1991-08-26 with total page 680 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 9th International Symposium on High Energy Spin Physics, held in Bonn, 6-15 September 1990, attracted 280 participants from 16 countries. This meet ing covered not only fundamental experimental and theoretical spin phenomena but also technological developments in polarized beams and targets. For the first time intermediate energy spin physics with electron machines was discussed extensively. Highlights included the work on polarized high energy electron beams at LEP and TRISTAN and the failure of the standard model in connection with spin phenomena, in particular the growth of the spin asymmetry in violent proton-proton scattering. Also the presentation of different models in con nection with the still-unsolved 'proton spin crisis' and the proposals for four different experiments to determine the spin structure functions caused lively and sometimes controversial discussions. The Organizing Committee would like to thank all speakers for their excel lent talks, the conveners for the organization of the parallel sessions, and the International Advisory Committee for their advice. Four workshops preceded the symposium. 160 participants, among them many young physicists, discussed mainly technological spin problems. These papers are published in separate proceedings. We gratefully acknowledge the enthusiastic help of the members of our institute in preparing and running the conference and the workshops, especially Mrs. D. FaSbender, Mrs. E. Wendorf, Mrs. J. Wetzel, and Dr. U.Idschok.
Download or read book Masters Abstracts International written by and published by . This book was released on 1996 with total page 880 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Soviet Physics Uspekhi written by and published by . This book was released on 1986 with total page 684 pages. Available in PDF, EPUB and Kindle. Book excerpt:
