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Author: H.M. Fried
Publisher: Springer Science & Business Media
ISBN: 1475704410
Category : Science
Languages : en
Pages : 438
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Book Description
This Advanced Study Institute (ASI) brought together two distinct ·"schools of approach" to Quantum Electrodynamics (QED) in the presence of intense, external, electromagnetic fields, in an effort to lay a joint foundation for a needed theoretical explanation of the sharp e+ e- "resonances" observed in the scattering of very heavy IOns. These (GSI/Darmstadt) experiments, whose history, latest reconfirmations, and most recent data were presented in three opening sessions (Bokemeyer, Koenig), show a smooth background of positron (e+) production, as a function of e+ kinetic energy. Superimposed upon this background are four very sharp peaks, of narrow widths (~ 30 KeV) and of clear experimental significance ('" 5 standard deviations). Most ofthese peaks correspond to sharp, essentially back-to-back electron-positron emission in the ions' center of mass. Following the approach of "supercritical" potential theory (SPT), where the total ionic charge unit Z satisfies Z > 137, it has been possible to provide a detailed and apparently correct understanding of the smooth e+ e- background; a coherent description of different facets of this approach, emphasizing the nature of the charged, supercritical vacuum, was described by the authors responsible for the invention of SPT (Greiner, Muller, Rafelski). In addition, predictions for related phenomena were outlined by other lecturers using the SPT approach (Bawin, Soff, SsJrensen).
Author: H.M. Fried
Publisher: Springer Science & Business Media
ISBN: 1475704410
Category : Science
Languages : en
Pages : 438
Get Book Here
Book Description
This Advanced Study Institute (ASI) brought together two distinct ·"schools of approach" to Quantum Electrodynamics (QED) in the presence of intense, external, electromagnetic fields, in an effort to lay a joint foundation for a needed theoretical explanation of the sharp e+ e- "resonances" observed in the scattering of very heavy IOns. These (GSI/Darmstadt) experiments, whose history, latest reconfirmations, and most recent data were presented in three opening sessions (Bokemeyer, Koenig), show a smooth background of positron (e+) production, as a function of e+ kinetic energy. Superimposed upon this background are four very sharp peaks, of narrow widths (~ 30 KeV) and of clear experimental significance ('" 5 standard deviations). Most ofthese peaks correspond to sharp, essentially back-to-back electron-positron emission in the ions' center of mass. Following the approach of "supercritical" potential theory (SPT), where the total ionic charge unit Z satisfies Z > 137, it has been possible to provide a detailed and apparently correct understanding of the smooth e+ e- background; a coherent description of different facets of this approach, emphasizing the nature of the charged, supercritical vacuum, was described by the authors responsible for the invention of SPT (Greiner, Muller, Rafelski). In addition, predictions for related phenomena were outlined by other lecturers using the SPT approach (Bawin, Soff, SsJrensen).
Author: C. S. Liu
Publisher: Cambridge University Press
ISBN: 1108618227
Category : Science
Languages : en
Pages : 308
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Book Description
The field of high-power laser-plasma interaction has grown in the last few decades, with applications ranging from laser-driven fusion and laser acceleration of charged particles to laser ablation of materials. This comprehensive text covers fundamental concepts including electromagnetics and electrostatic waves, parameter instabilities, laser driven fusion,charged particle acceleration and gamma rays. Two important techniques of laser proton interactions including target normal sheath acceleration (TNSA) and radiation pressure acceleration (RPA) are discussed in detail, along with their applications in the field of medicine. An analytical framework is developed for laser beat-wave and wakefield excitation of plasma waves and subsequent acceleration of electrons. The book covers parametric oscillator model and studies the coupling of laser light with collective modes.
Author: Jeremy Samuel Heyl
Publisher:
ISBN:
Category : Neutron stars
Languages : en
Pages : 538
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Book Description
Author: Greiner W. Hold
Publisher: Springer Science & Business Media
ISBN: 1489921397
Category : Technology & Engineering
Languages : en
Pages : 896
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Book Description
The NATO Advanced Study Institute on Quantum Electrodynamics of Strong Fields was held at Lahnstein on the Rhine from 15-26 June, 1981. The school was devoted to the advances, theoretical and exper imental, in the physics of strong fields made during the past decade. The topic of the first week was almost exclusively quantum electrodynamics, with discussions of symmetry breaking in the ground state, of the physics of heavy ion collisions and of precision tests of perturbative quantum electrodynamics. This was followed in the second week by the presentation of a broad range of other areas where strong fields occur, reaching from nuclear physics over quantum chromodynamics to gravitation theory and astrophysics. We were fortunate to be able to call on a body of lecturers who not only have made considerable personal contributions to these advances but who are also noted for their lecturing skills. Their dedication for their subject was readily transmitted to the stu dents resulting in a very successful school. This enthusiasm is also reflected in their contributions to these Proceedings which, as I believe, will in time become a standard source of reference for future work on the physics of strong fields and will help to spread the benefits of the school to a larger audience than those who were able to attend. I regret that the Soviet colleagues Ya. B. Zeldovich and V. S. Popov were unable to participate.
Author:
Publisher:
ISBN:
Category : Power resources
Languages : en
Pages : 592
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Book Description
Author: Reinhard Stock
Publisher: John Wiley & Sons
ISBN: 3527649263
Category : Science
Languages : en
Pages : 810
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Book Description
This book fills the need for a coherent work combining carefully reviewed articles into a comprehensive overview accessible to research groups and lecturers. Next to fundamental physics, contributions on topical medical and material science issues are included.
Author: Melvin Month
Publisher: World Scientific
ISBN: 9814548197
Category :
Languages : en
Pages : 774
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Book Description
This volume contains the proceedings of the Topical course on Frontiers of Accelerator Technology, jointly organized by the CERN Accelerator School, the KEK Accelerator School and the US Particle Accelerator School. It was held at Maui, Hawaii, November 3-9, 1994. The purpose was to disseminate knowledge on the latest ideas and developments in the technology of particle accelerators by bringing together world known experts and younger scientists in the field. It was intended for individuals with professional interest in accelerator physics and technology, for graduate students, for post-docs and for those working in accelerator-based sciences.The motivation to conceive and build accelerators comes from a most fundamental need of man — to understand and control the world around us. With beams and their associated accelerators, scientists and engineers can gain understanding of the nature of matter and modify matter not possible by other means. Areas already influenced by the developments in accelerator technology are high energy and nuclear physics, atomic and molecular physics, condensed matter physics and the biological sciences. There is also a growing number of applications in medicine and industry. The program was as follows: lectures in superconductivity, magnets, RF, feedback, instrumentation, high power sources, beam stability and novel accelerator techniques; seminars on accelerator applications, the role of government and industry, and perspectives on future technology; round table: the high energy accelerator frontier; four short courses, each including 8 hours of lectures, problems and tutorials on superconducting magnets, superconducting rf, instrumentation and linacs.This book aims to summarize all the currently available knowledge on the technology driving the development of particle beams for science, medicine, and industry. It is the most up-to-date and unique collection of information on this technology presently available.
Author: Andre D Bandrauk
Publisher: Springer Science & Business Media
ISBN: 1461533643
Category : Science
Languages : en
Pages : 397
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Book Description
This volume contains the lectures and communications presented at the NATO Advanced Research Workshop (NATO ARW 900857) which was held May 5-10, 1991 at McMaster University, Hamilton, Ontario, Canada. A scientific commitee made up of P.P. Lambropoulos (USC & Crete), P.8. Corkum (NRC, Ottawa), and H. B. vL. van den Heuvell (FOM, Amsterdam) guided the organizers, A.D. Bandrauk (Sherbrooke) and S.C. Wallace (Toronto) in preparing a programme which would cover the latest advances in the field of atom and molecule laser interactions. Since the last meeting held in July 1987 on "Atomic and Molecular Processes with Short Intense Laser Pulses", NATO ASI vol 1718 (Plenum Press 1988), considerable progress has been made in understanding high intensity effects on atoms and the concomitant coherence effects. After four years, the emphasis is now shifting more to molecules. The present volume represents therefore this trend with four sections covering the main interests of research endeavours in this area: i) Atoms in Intense Laser-Fields ii) Molecules in Intense Laser Fields iii) Atomic Coherences iv) Molecular Coherences The experience developed over the years in multiphoton atomic processes has been very useful and is the main source of our understanding of similar processes in molecules. Thus ATI (above threshold ionization) has been found to occur in molecules as well as a new phenomenon, ATD (above-threshold dissociation). Laser-induced avoided crossings of molecular electronic surfaces is also now entering the current language of high intensity molecular processes.
Author:
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 1268
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Book Description
Author: Ashwini P. Alegaonkar
Publisher: CRC Press
ISBN: 1000835464
Category : Science
Languages : en
Pages : 361
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Book Description
This book provides a practical platform to the readers for facile preparation of various forms of carbon in its nano-format, investigates their structure–property relationship, and finally, realizes them for a variety of applications taking the route of application engineering. It covers the preparation and evaluation of nanocarbons, variety of carbon nanotubes, graphene, graphite, additively manufactured 3D carbon fibres, their properties, and various factors associated with them. A summary and outlook of the nanocarbon field is included in the appendices. Features: Presents comprehensive information on nanocarbon synthesis and properties and some specific applications Covers the growth of carbon nanoparticles, nanotubes, ribbons, graphene, graphene derivatives, porous/spongy phases, graphite, and 3D carbon fabrics Documents a large variety of characterizations and evaluations on the nature of growth causing effect on structure properties Contains dedicated chapters on miniaturized, flat, and 2D devices Discusses a variety of applications from military to public domains, including prevalent topics related to carbon. This book is aimed at researchers and graduate students in materials science and materials engineering, and physics.
