Download or read book Excited States of Positronium written by Stephen Martindale Curry and published by . This book was released on 1972 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The First Excited State of Positronium written by Henry Way Kendall and published by . This book was released on 1954 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Positronium Chemistry written by James Green and published by . This book was released on 1964 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Principles and Applications of Positron Positronium Chemistry written by Y. C. Jean and published by World Scientific. This book was released on 2003 with total page 426 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a comprehensive description of the principles and applications of positron and positronium chemistry. Pedagogical and tutorial in nature, it will be ideal for graduate students and researchers in the area of positron annihilation spectroscopy. The contributing authors are authoritative scientists prominent in the frontiers of research, actively pursuing positron annihilation research on chemical and applied systems. Contents: Introduction to Positron and Positronium Chemistry (Y C Jean et al.); Compounds of Positrons and Positronium (D M Schrader); Experimental Techniques in Positron Spectroscopy (P G Coleman); Organic and Inorganic Chemistry of the Positron and Positronium (G Duplotre & I Billard); Physical and Radiation Chemistry of the Positron and Positronium (S V Stepanov & V M Byakov); Positrons and Positronium in the Gas Phase (D M Schrader); Positron Porosimetry (M H Weber & K G Lynn); Positron Annihilation Studies on Superconducting Materials (C S Sundar); Positronium in Si and SiO 2 Thin Films (R Suzuki); Applications to Polymers (P E Mallon); Applications of Slow Positrons to Polymeric Surfaces and Coatings (Y C Jean et al.); Positron Annihilation Induced Auger Spectroscopy (S Amdani et al.); Characterization of Nanoparticle and Nanopore Materials (J Xu); AMOC in Positron and Positronium Chemistry (H Stoll et al.). Readership: Materials science researchers; physical chemists; polymer scientists and engineers; chemical and mechanical engineers; solid state physicists; graduate students in chemistry, physics, engineering and polymer science; coating industry researchers."
Download or read book Positron Physics written by M. Charlton and published by Cambridge University Press. This book was released on 2005-10-13 with total page 466 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a comprehensive and up-to-date account of the field of low energy positrons and positronium within atomic and molecular physics. Each chapter contains a blend of theory and experiment, giving a balanced treatment of all the topics. Useful for graduate students and researchers in physics and chemistry.
Download or read book Study of Photoexcited States by Positron Method Final Report written by and published by . This book was released on 1981 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Positrons can be used as markers in microscopic studies of molecular systems. This is so because positrons, as antiparticles of electrons, will annihilate with an electron in the medium under conditions that signify the electron density and momenta at the site of the positron. In most insulators, positrons can capture an electron into a stable atomic state before annihilation called positronium (Ps). Positronium, when formed, is a particularly powerful probe of materials since Ps annihilates in distinct ways from free positrons. It also has two different spin states which can be perturbed by paramagnetic centers in the medium and, thereby, measure their concentration and properties. This aspect of low-energy positron physics was taken advantage of for the study of light-excited electronic states in organic molecules. Long-lived triplet states, which normally yield phosphorescent luminescence on deexcitation, are particularly interesting. The triplet state has long been the subject of speculation as to its role in biology, the transmission of information, distribution of photo and radiation effects, etc. It was the object of this project to assess the potential of the positron method for the detection of trace concentrations of photo-induced triplet states of organic molecules. Progress is discussed. (WHK).
Download or read book Positron And Positronium Chemistry Proceedings Of The Third International Workshop written by Jerry Y C Jean and published by World Scientific. This book was released on 1990-11-27 with total page 674 pages. Available in PDF, EPUB and Kindle. Book excerpt: This workshop on the subject of positron and positronium chemistry is the third international conference after those in Blacksburg, Virginia (1979), and in Arlington, Texas (1986). The fields of interests are interdisciplinary, such as radiation chemistry, superconductivity polymer chemistry, biochemistry, quantum chemistry and nuclear chemistry.
Download or read book Evidence for Formation of the First Excited State of Positronium written by S. L. Varghese and published by . This book was released on 1974 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Positrons in Solids written by P. Hautojärvi and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 266 pages. Available in PDF, EPUB and Kindle. Book excerpt: In condensed matter initially fast positrons annihilate after having reached equi librium with the surroundings. The interaction of positrons with matter is governed by the laws of ordinary quantum mechanics. Field theory and antiparticle properties enter only in the annihilation process leading to the emergence of energetic photons. The monitoring of annihilation radiation by nuclear spectroscopic methods provides valuable information on the electron-positron system which can directly be related to the electronic structure of the medium. Since the positron is a positive electron its behavior in matter is especially interesting to solid-state and atomic physi cists. The small mass quarantees that the positron is really a quantum mechanical particle and completely different from any other particles and atoms. Positron physics started about 25 years ago but discoveries of new features in its interac tion with matter have maintained continuous interest and increasing activity in the field. Nowadays it is becoming part of the "stock-in-trade" of experimental physics.
Download or read book Spectroscopy and Manipulation of Positronium in Excited States written by Alberto M. Alonso and published by . This book was released on 2018 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1975-12 with total page 886 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Positron Annihilation ICPA 13 written by Toshio Hyodo and published by Trans Tech Publications Ltd. This book was released on 2004-01-15 with total page 550 pages. Available in PDF, EPUB and Kindle. Book excerpt: There is no doubt that, when it comes to the study of the structures and defects of materials, there is presently no technique that rivals positron annihilation. The increasing demands for higher accuracy and reliability provide a constant stimulus to the field, and the present work presents the newest and most important scientific discoveries made in the field of positron annihilation. Volume is indexed by Thomson Reuters CPCI-S (WoS).
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 Positron Beams And Their Applications written by Paul G Coleman and published by World Scientific. This book was released on 2000-01-22 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a coherent and comprehensive overview of the generation and application of mono-energetic positron beams. It has been written by acknowledged experts, at a level accessible to graduate students working, or planning to work, with positron beams, and to scientists in other areas who want to know something about the field.The book begins with a brief historical introduction and an overview of how positron beams are generated and transported. A description of the fate of slow positrons in gaseous and condensed matter, with reference to many of the fundamental measurements made possible by the advent of positron beams, is followed by a discussion on applications in the study of solid surfaces, defect profiling in subsurface regions, interfaces and thin films, and the probing of bulk properties in novel ways. The book ends with a look at the future, considering the prospects for intense positron beams and their potential for further research.
Download or read book Theoretical Calculation of the Lifetime of Positronium in Its Excited State written by Fred Neil Mortensen and published by . This book was released on 1953 with total page 59 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Atomic Physics with Positrons written by J.W. Humberston and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt: The NATO Advanced Research Workshop on Atomic Physics with Positrons, which was held at University College London during 15-18 July 1987, was the fourth meeting in a series devoted to the general theme of positron colli sions in gases. Previous meetings have been held at York University, Toronto (1981); Royal Holloway College, Egham (1983) and Wayne State Uni versity, Detroit (1985). Recent very significant improvements in positron beam currents, due to the development of more efficient moderators and the use of more intense positron sources, are making possible an increasingly sophisticated range of experiments in atomic collision physics. Whereas a few years ago only total scattering cross sections could be determined, measurements can now be made of various partial and differential cross sections. Intense positron beams are also being used to produce positronium beams and already, as reported here, preliminary investigations have been made of collisions of positronium with several target systems. These experimental developments have stimulated, and been stimulated by, steady, if somewhat less spectacu1ar,progress in associated theoretical studies. Both aspects of the field are well represented in these Proceed ings.
Download or read book EXCITED STATE POSITRONIUM written by SHAHRAM HATAMIAN and published by . This book was released on 1987 with total page 103 pages. Available in PDF, EPUB and Kindle. Book excerpt: discrete symmetries are considered in detail.
