He-He mixtures 3He-4He II mixtures PDF Download
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Author: Johannes G. Kuerten
Publisher:
ISBN:
Category :
Languages : en
Pages : 140
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Author: Johannes G. Kuerten
Publisher:
ISBN:
Category :
Languages : en
Pages : 140
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Book Description
![Specific heat measurements on dilute 3He-4He [He-He] mixtures PDF](https://books.google.com/books/content/images/frontcover/iC6YPgAACAAJ?fife=w80-h100)
Author: Hendricus C. van der Zeeuw
Publisher:
ISBN:
Category :
Languages : en
Pages : 79
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Author: Roland Dobbs
Publisher:
ISBN: 9780198506409
Category : Helium
Languages : en
Pages : 1088
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Book Description
The condensed phases of helium three provide an exciting laboratory for many fundamental questions in condensed matter physics. Due to its light mass and weak interatomic potential, the condensed phases of helium display quantum effects more dramatically than any other atomic system. Intuitionbased on classical experience is often misleading in these phases: the solid phase for instance is less ordered at low temperature than the liquid phase. The present book is unique in covering all the low temperature properties of helium three as liquid, superfluid, and solid. It provides anintroduction to the extensive literature on helium three from the point of view of an experimentalist, and includes the analogy of its properties with the cosmological 'big bang'. Graduate students, researchers, and professionals in condensed matter physics and low temperature physics will findthis the standard reference work for the decade to come.
Author:
Publisher:
ISBN:
Category : Nuclear energy
Languages : en
Pages : 1162
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Author: Allan Griffin
Publisher: Cambridge University Press
ISBN: 0521432715
Category : Science
Languages : en
Pages : 322
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Book Description
This volume gives an up-to-date, systematic account of the microscopic theory of Bose-condensed fluids developed since the late 1950s. In contrast to the usual phenomenological discussions of superfluid 4He, the present treatment is built on the pivotal role of the Bose broken symmetry and a Bose condensate. The many-body formalism is developed, with emphasis on the one- and two-particle Green's functions and their relation to the density response function. These are all coupled together by the Bose broken symmetry, which provides the basis for understanding the elementary excitations and response functions in the hydrodynamic and collisionless regions. It also explains the difference between excitations in the superfluid and normal phases. Chapter 4 gives the first critical assessment of the experimental evidence for a Bose condensate in liquid 4He, based on high-momentum neutron scattering data.
Author: K.D. Timmerhaus
Publisher: Springer Science & Business Media
ISBN: 1468478648
Category : Science
Languages : en
Pages : 673
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Book Description
The 13th International Conference on Low Temperature Physics, organized by the National Bureau of Standards, Los Alamos Scientific Laboratory, and the University of Colorado, was held in Boulder, Colorado, August 21 to 25, 1972, and was sponsored by the National Science Foundation, the U. S. Army Office of Scientific Research, the U. S. Atomic Energy Commission, the U. S. Navy Office of Naval Research, the International Institute of Refrigeration, and the Internation al Union of Pure and Applied Physics. This international conference was the latest in a series of biennial conferences on low temperature physics, the first of which was held at the Massachusetts Institute of Technology in 1949. (For a complete list of previous L T conferences see p. viii. Many of these past conferences have been coordinated and sponsored by the Commission on Very Low Temperatures of IUPAP. Subsequent LT conferences will be scheduled triennially beginning in 1975. LT 13 was attended by approximately 1015 participants from twenty five countries. Eighteen plenary lectures and 550 contributed papers were presented at the Conference. The Conference began with brief introductory and welcoming remarks by Dr. R. H. Kropschot on behalf of the Organizing Committee, Professor J. Bardeen on behalf of the Commission on Very Low Temperatures of the IUP AP, and Pro fessor O. V. Lounasmaa on behalf of the International Institute of Refrigeration. The eighth London Award was then presented by Professor E.
Author: Steven W. Van Sciver
Publisher: Springer Science & Business Media
ISBN: 1441999795
Category : Science
Languages : en
Pages : 487
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Book Description
Twenty five years have elapsed since the original publication of Helium Cryogenics. During this time, a considerable amount of research and development involving helium fluids has been carried out culminating in several large-scale projects. Furthermore, the field has matured through these efforts so that there is now a broad engineering base to assist the development of future projects. Helium Cryogenics, 2nd edition brings these advances in helium cryogenics together in an updated form. As in the original edition, the author's approach is to survey the field of cryogenics with emphasis on helium fluids. This approach is more specialized and fundamental than that contained in other cryogenics books, which treat the associated range of cryogenic fluids. As a result, the level of treatment is more advanced and assumes a certain knowledge of fundamental engineering and physics principles, including some quantum mechanics. The goal throughout the work is to bridge the gap between the physics and engineering aspects of helium fluids to provide a source for engineers and scientists to enhance their usefulness in low-temperature systems. Dr. Van Sciver is a Distinguished Research Professor and John H. Gorrie Professor of Mechanical Engineering at Florida State University. He is also a Program Director at the National High Magnetic Field Laboratory (NHMFL). Dr. Van Sciver joined the FAMU-FSU College of Engineering and the NHMFL in 1991, initiating and teaching a graduate program in magnet and materials engineering and in cryogenic thermal sciences and heat transfer. He also led the NHMFL development efforts of the cryogenic systems for the NHMFL Hybrid and 900 MHz NMR superconducting magnets. Between 1997 and 2003, he served as Director of Magnet Science and Technology at the NHMFL. Dr. Van Sciver is a Fellow of the ASME and the Cryogenic Society of America and American Editor for the journal Cryogenics. He is the 2010 recipient of the Kurt Mendelssohn Award. Prior to joining Florida State University, Dr. Van Sciver was Research Scientist and then Professor of Nuclear Engineering, Engineering Physics and Mechanical Engineering at the University of Wisconsin-Madison from 1976 to 1991. During that time he also served as the Associate Director of the Applied Superconductivity Center. Dr. Van Sciver received his PhD in Low Temperature Physics from the University of Washington-Seattle in 1976. He received his BS degree in Engineering Physics from Lehigh University in 1970. Dr. Van Sciver is author of over 200 publications and patents in low temperature physics, liquid helium technology, cryogenic engineering and magnet technology. The first edition of Helium Cryogenics was published by Plenum Press (1986). The present work is an update and expansion of that original project.
Author:
Publisher: Elsevier
ISBN: 0080873081
Category : Science
Languages : en
Pages : 411
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Book Description
Since 1955 Progress in Low Temperature Physics has continued to monitor scientific achievements in the realm of low-temperature physics. Obtaining low temperatures used to be an aim in itself in the past, whereas nowadays achieving millikelvin temperatures is a routine experimental procedure. However, the properties of materials at these low temperatures contine to produce fascinating physics: the liquid, solid and superfluid, phases of the quantum fluids 3He and 4He as well as 'new' materials such as high-temperature superconductors and tiny quantum devices display their macroscopic quantum behavior only at the lowest temperatures. Volume XIII of this series continues the tradition of collecting fundamental studies of macroscopic quantum phenomena. In this volume, properties of new systems such as small circuits at low temperatures and high-Tc superconductors are studied. But the systems that are formed by 3He and 4He and their mixtures at low temperatures continue to dazzle and amaze with their ever more intricate properties studied with increasing accuracy. This volume provides the reader with an archival overview of the magic world of low temperatures as perceived by todays most sensitive probes.
Author:
Publisher:
ISBN:
Category : Mines and mineral resources
Languages : en
Pages : 1122
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Book Description
Author: A.F.G. Wyatt
Publisher: Springer Science & Business Media
ISBN: 1468459376
Category : Science
Languages : en
Pages : 583
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Book Description
The study of quantum fluids in three dimensions has been an important area for many years as it embraces Bose-Einstein condensation, superfluidity and macroscopic quantisation. These are fundamental aspects of physics which can be studied in liquid 4He. In contrast, quantum fluids in two dimension is more recent and less developed. Nevertheless it has shown many interesting phenomena including a rich variety of phases and the Kosterlitz-Thouless transition. Intermediate between these dimensions are the restricted geometries of micro porous materials into which He may be introduced. The main quantum materials considered are 4He, 3He, D2, H2, H and electrons on the surface of 4He. The superfluid phases of 3He were excluded, e~cept for superfluid film flow, as 3He involves a separate set of problems. These proceedings arise from a lively Advanced Research Workshop on Excitations in Two-Dimensional and Three-Dimensional Quantum Fluids held in Exeter 10-15 August 1990. Fifty scientists took part and each provided a written contribution. Perhaps it is a testimony to the discussions that several papers were revised by the authors after the meeting. The order of the chapters is the same as the presentations at the workshop. This arrangement starts with 4He in three dimensions which establishes a base from which the two dimensional properties can be viewed. At the end of each section there is a report on the discussion session. These are interesting and useful chapters as they clarify points made in the papers and define the boundary of current understanding.
