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Magnetic Conditioning In Superfluid
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Book Synopsis Magnetic Conditioning in Superfluid by :
Download or read book Magnetic Conditioning in Superfluid written by and published by . This book was released on 1988 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Improvements in superconducting magnet technology have reduced to a handful the number of training quenches typical of dipole magnets. The number of training quenches in long (17 m) and short (1--2 m) SSC magnets are now about the same (operating at 6.6 tesla and 4.4 K). Yet the steps necessary to totally eliminate training are in the future RandD plans for magnet construction and conductor motion prevention. The accepted hypothesis is that Lorentz forces and poor mechanical properties of superconducting cables are the cause of conductor motion. Conductor motion reduces the stored energy in the cable by converting it into heat. The small amount of heat generated (millijoules) during motion is usually enough to quench the magnet when it is close to short sample. During training, the magnet performance normally improves with the number of quenches. It is not the quench itself that improves magnet performance but rather the fact that once conductor motion has occurred it will probably not repeat itself unless subjected to higher forces. Conditioning is a process that enables the magnet to reduce its stored energy without causing a premature quench. During the conditioning process the magnet is further cooled from its operating temperature of 4.4 K to 1.8 K by converting He I into He II. As a result the magnet is placed in a state where it has excess stability as well as excellent heat transfer capabilities. Although this does not eliminate motion, if the magnet is now cycled to (approximately)10% above its operating field at 4.4 K (which is above short sample) the excess stability should be enough to prevent quenching and reduce the probability of conductor motion and training once the magnet has been warmed back up to its operating temperature of 4.4 K. 3 refs., 5 figs.
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 702 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Magnetic Observations of the Superfluid-superfluid Phase Transition in Liquid Helium Three by : Stephen Thomas Boyd
Download or read book Magnetic Observations of the Superfluid-superfluid Phase Transition in Liquid Helium Three written by Stephen Thomas Boyd and published by . This book was released on 1992 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Energy Research Abstracts written by and published by . This book was released on 1990 with total page 620 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Magnetization and Magnetic Relaxation in Superfluid 3He by : Ronald Eugene Sager
Download or read book Magnetization and Magnetic Relaxation in Superfluid 3He written by Ronald Eugene Sager and published by . This book was released on 1977 with total page 298 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Exotic Properties of Superfluid 3He by : G. E. Volovik
Download or read book Exotic Properties of Superfluid 3He written by G. E. Volovik and published by World Scientific. This book was released on 1992 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book discusses the unique properties of superfluid phases of 3He, the condensed matter with the outmost broken symmetry, which combine in a surprising way the properties of ordered magnets, liquid crystals and superfluids. The complicated vacuum state of these phases with a large number of fermionic and bosonic quasiparticles and topological objects remains the vacuum in modern quantum field theories. Some of the objects and physical phenomena in 3He have strong analogy with the neutrino, W-bosons, weak interactions, gravity, chiral anomaly, Quantum Hall Effect and fractional statistics. As an example of topological objects, the quantized vortices in 3He phases are discussed in detail, including singular and continuous vortices, half-quantum vortices, broken symmetry in the vortex core and phase transitions between the vortex states with different symmetry and topology.
Book Synopsis Basic Superfluids by : Tony Guenault
Download or read book Basic Superfluids written by Tony Guenault and published by CRC Press. This book was released on 2002-11-28 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt: Superfluidity is the jewel in the crown of low temperature physics. When temperatures are low enough, every substance in thermal equilibrium must become ordered. Since some materials remain fluid to the lowest temperatures, it is a fascinating question as to how this ordering can take place. One possibility is the formation of a superfluid state, a
Book Synopsis Superfluidity and Superconductivity by : D.R. Tilley
Download or read book Superfluidity and Superconductivity written by D.R. Tilley and published by CRC Press. This book was released on 1990-01-01 with total page 484 pages. Available in PDF, EPUB and Kindle. Book excerpt: Superfluidity and Superconductivity, Third Edition introduces the low-temperature phenomena of superfluidity and superconductivity from a unified viewpoint. The book stresses the existence of a macroscopic wave function as a central principle, presents an extensive discussion of macroscopic theories, and includes full descriptions of relevant experimental results throughout. This edition also features an additional chapter on high-temperature superconductors. With problems at the end of most chapters as well as the careful elaboration of basic principles, this comprehensive survey of experiment and theory provides an accessible and invaluable foundation for graduate students studying low-temperature physics as well as senior undergraduates taking specialized courses.
Book Synopsis Superfluidity and Superconductivity by : David R. Tilley
Download or read book Superfluidity and Superconductivity written by David R. Tilley and published by CRC Press. This book was released on 1986 with total page 450 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Superfluid States of Matter by : Boris V. Svistunov
Download or read book Superfluid States of Matter written by Boris V. Svistunov and published by CRC Press. This book was released on 2015-04-15 with total page 569 pages. Available in PDF, EPUB and Kindle. Book excerpt: Covers the State of the Art in Superfluidity and SuperconductivitySuperfluid States of Matter addresses the phenomenon of superfluidity/superconductivity through an emergent, topologically protected constant of motion and covers topics developed over the past 20 years. The approach is based on the idea of separating universal classical-field superf
Book Synopsis Studies of Magneto-hydrodynamics of Superfluid 3He in High Magnetic Field by : Sing-Teh Lu
Download or read book Studies of Magneto-hydrodynamics of Superfluid 3He in High Magnetic Field written by Sing-Teh Lu and published by . This book was released on 1989 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Magnetic and Flow Relaxation in Superfluid 3He-A1 Phase by : Qiang Jiang
Download or read book Magnetic and Flow Relaxation in Superfluid 3He-A1 Phase written by Qiang Jiang and published by . This book was released on 1991 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Superfluids and Superconductors by : Roberto Zivieri
Download or read book Superfluids and Superconductors written by Roberto Zivieri and published by BoD – Books on Demand. This book was released on 2018-05-30 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers some of the most recent advances in the field of superfluids and superconductors. More specifically, it presents some of the most advanced theoretical formulations of superfluidity and superconductivity with special regard to their topological properties and vortex dynamics together with a description of the main experiments carried out via experimental techniques at the forefront to study these two such important phenomena in condensed matter physics. Special emphasis is given to ultracold Fermi gases, to clean liquid helium and to vortex membranes and knots for the class of superfluids and to the emerging superconductivity, to intermediate states in type-I superconductors, and to heat treatments to modulate the critical temperature for the class of superconductors.
Book Synopsis The Microscopic Theory of Superfluid He II and with Its QCE Superfluidity Mechanism Applied to Superconductors by : J. X. Zheng-Johansson
Download or read book The Microscopic Theory of Superfluid He II and with Its QCE Superfluidity Mechanism Applied to Superconductors written by J. X. Zheng-Johansson and published by Nova Publishers. This book was released on 2004 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors introduce the full content of the Microscopic Theory of Superfluid He II, developed since 1998; also given are brief accounts of the application of one concept from the theory, the QCE1 Superfluidity Mechanism, to superconductors. One peer review report writes: "The authors include more of the underlying physics than some earlier theories, and the comparisons they make with experimental data are satisfactory". The Microscopic Theory of Superfluid He II has several important features, which distinguishes this theory from the previous theories of He II. The immense volume of information the authors have today, especially the pieces of information revealing the microscopic dynamics of the system, was not available to the developers of the previous theories in the 1930s-1940s. This book also demonstrates how the general principles of quantum mechanics and condensed matter physics can be consistently applied to a given system with confidence, once a realistic microscopic model is derived for it. It demonstrates in turn the validity of the general physics principles in such an extreme system as the quantum fluid He II.
Book Synopsis Novel Superfluids by : Karl-Heinz Bennemann
Download or read book Novel Superfluids written by Karl-Heinz Bennemann and published by OUP Oxford. This book was released on 2014-11-27 with total page 657 pages. Available in PDF, EPUB and Kindle. Book excerpt: Volume 2 of Novel Superfluids continues the presentation of recent results on superfluids, including novel metallic systems, superfluid liquids, and atomic/molecular gases of bosons and fermions, particularly when trapped in optical lattices. Since the discovery of superconductivity (Leyden, 1911), superfluid 4He (Moscow and Cambridge, 1937), superfluid 3He (Cornell, 1972), and observation of Bose-Einstein Condensation (BEC) of a gas (Colorado and MIT, 1995), the phenomenon of superfluidity has remained one of the most important topics in physics. Again and again, novel superfluids yield surprising and interesting behaviors. The many classes of metallic superconductors, including the high temperature perovskite-based oxides, MgB2, organic systems, and Fe-based pnictides, continue to offer challenges. The technical applications grow steadily. What the temperature and field limits are remains illusive. Atomic nuclei, neutron stars and the Universe itself all involve various aspects of superfluidity, and the lessons learned have had a broad impact on physics as a whole.
Book Synopsis Collisionless Sound and Static Magnetization in Superfluid 3He by : Douglas Norman Paulson
Download or read book Collisionless Sound and Static Magnetization in Superfluid 3He written by Douglas Norman Paulson and published by . This book was released on 1974 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Superfluids written by Fritz London and published by . This book was released on 1961 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt:
