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Author:
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 848
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Author:
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 848
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Book Description
Author: H. A. Stahl
Publisher:
ISBN:
Category : Photoelectric materials
Languages : en
Pages : 80
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Book Description
The feasibility of making a photoemissive solar energy converter was investigated theoretically and in practical devices. Theoretical considerations indicate that with optimum photoemitters and collectors efficiencies of the order of 3% are achievable.. The maximum efficiency achieved in a practical device was only one-tenth of one percent. In support of the work done directly in fabrication of photoemissive solar energy converters, numerous measurements were made of the properties of photoemitters under the high light and high current conditions typical of photoemissives solar energy converter. It was established that several photoemitters can operate for relatively long periods at high current densities without excessive fatigue. Techniques were developed to place photoemissive surfaces on conductive substrates having such conductivity as to make the combination suitable for use in photoemissive solar energy converters. (Author)
Author:
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ISBN:
Category : Electrons
Languages : en
Pages : 36
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Book Description
Author: S.P. McGlynn
Publisher: Springer Science & Business Media
ISBN: 9400952694
Category : Science
Languages : en
Pages : 953
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Book Description
This volume contains the texts of the Invited Lectures pre sented at the NATO Advanced Study Institute PHOTOPHYSICS AND PHOTOCHEMISTRY IN THE VACUUM ULTRAVIOLET, which was held at the Interlaken Lodge in Lake Geneva, Wisconsin USA, August 15-28, 1982. This ASI was the third in a series of NATO Institutes de voted to a study of the physical and chemical transformations undergone by atoms and molecules after absorption of high-energy (VUV
Author:
Publisher:
ISBN:
Category : Military research
Languages : en
Pages : 588
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Book Description
Author: C.V. Shank
Publisher: Elsevier
ISBN: 0444600574
Category : Science
Languages : en
Pages : 513
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Book Description
The physics of nonequilibrium electrons and phonons in semiconductors is an important branch of fundamental physics that has many practical applications, especially in the development of ultrafast and ultrasmall semiconductor devices. This volume is devoted to different trends in the field which are presently at the forefront of research. Special attention is paid to the ultrafast relaxation processes in bulk semiconductors and two-dimensional semiconductor structures, and to their study by different spectroscopic methods, both pulsed and steady-state. The evolution of energy and space distribution of nonequilibrium electrons and the relaxation kinetics of hot carriers and phonons are considered under various conditions such as temperature, doping and pumping intensity by leading experts in the field.
Author: United States. National Aeronautics and Space Administration
Publisher:
ISBN:
Category :
Languages : en
Pages : 792
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Book Description
Author: Leo Young
Publisher: Elsevier
ISBN: 0323155537
Category : Technology & Engineering
Languages : en
Pages : 333
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Book Description
Advances in Microwaves, Volume 5 is a three-chapter text that covers low microwave frequencies used to accelerate elementary particles and centimeter and millimeter waves for exploring atmospheric phenomena, as well as the microwave demodulation of light. Chapter 1 describes high-speed photodetectors whose modulation frequency response extends into the microwave region. This chapter focuses on the fundamental principles of specific detectors whose performance is sufficiently close to fundamental limits to assure their staying power. Chapter 2 examines radiometric fundamentals associated with the frequency spectrum, with particular emphasis on the 3 cm to 3 mm wavelength region. Chapter 3 discusses the conditions in which hybrid waves traveling at the velocity of light can exist in a homogeneous isotropic medium. This chapter also explores the design requirements of deflectors. Discussions on transformation of Maxwell's equations for a traveling wave in a gyroelectric or gyromagnetic medium and consistent solutions of the scalar wave equation are provided in the supplementary texts.
Author: S.D. Kevan
Publisher: Elsevier
ISBN: 0080887465
Category : Science
Languages : en
Pages : 627
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Book Description
Angle-resolved photoemission has become an indispensable tool for solid state and surface physicists and chemists. This book covers the underlying phenomenology of the technique, reviews its application to existing problems, and discusses future applications. The book is particularly timely given the significant improvements in experimental and theoretical methodology which have recently been or soon will be attained, namely, ultrahigh resolution studies using improved sources of synchrotron radiation, quasiparticle interpretation of measured dispersion relations and spectra, in situ growth of novel materials, etc. The technique has been applied predominantly to understand materials for which the one-electron paradigm is a reasonable approximation. Most chapters discuss this type of experiment: 2D and 3D states in metals and semiconductors, extrinsic states induced by adsorption, etc. Applications of the technique to materials where electron correlation plays a comparable role to that of solid state hybridization, ferro- and antiferromagnets, high Tc superconductors, etc. are rapidly growing in popularity. These areas are also discussed and a foundation is laid for further experiments in this direction. Almost all chapters contain comprehensive bibliographies and compendia of systems studied. The book has an extensive index which cross references applications and systems studied.
Author:
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ISBN:
Category : Aeronautics
Languages : en
Pages : 704
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Book Description
