Excitations in Liquid and Solid Helium, Glyde, Henry (Professor, Department of Physics and
Автор: Allan Griffin Название: Excitations in a Bose-condensed Liquid ISBN: 0521019982 ISBN-13(EAN): 9780521019989 Издательство: Cambridge Academ Рейтинг: Цена: 4830 р. Наличие на складе: Есть у поставщика Поставка под заказ.
Описание: 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.
Описание: Offers an introduction to the properties of wave-like excitations associated with surfaces and interfaces. Emphasizing acoustic, optic, and magnetic excitations and, apart from one section on liquid surfaces, this text focuses on solids. It also relates theory and experiment and describes important experimental techniques.
Автор: Borghesani, Armando Francesco Название: Ions and Electrons in Liquid Helium ISBN: 0199213607 ISBN-13(EAN): 9780199213603 Издательство: Oxford Academ Рейтинг: Цена: 10238 р. Наличие на складе: Есть у поставщика Поставка под заказ.
Описание: This book provides a complete scientific survey of the experiments and theories of charge transport in liquid helium. The experimental outcome and the theoretical interpretation are thoroughly discussed. A vast literature is supplied for the interested reader to improve his/her knowledge of a specific topic.
Автор: Russell J. Donnelly Название: Quantized Vortices in Helium II ISBN: 0521018145 ISBN-13(EAN): 9780521018142 Издательство: Cambridge Academ Рейтинг: Цена: 6096 р. Наличие на складе: Есть у поставщика Поставка под заказ.
Описание: This book discusses the properties of quantized vortex lines in superfluid helium-4 in the light of research on vortices in modern fluid mechanics, and gives the first comprehensive treatment of the problem. The author begins with a review of the knowledge of classical fluid dynamics which is relevant to the main topics of the book. This is followed by a presentation of basic material on helium II and quantized vortices. The following chapters deal with various different aspects of the subject, and the book concludes with substantial introductions to two currently active topics, namely superfluid turbulence and the nucleation of quantized vortices. Both quantum tunnelling and thermal activation nucleation processes are also discussed, including the Kosterlitz-Thouless transition in thin films. The author’s comprehensive approach will make this book invaluable for students taking advanced undergraduate or graduate courses, and for all those involved in research on classical and quantum vortices.
Описание: A compendium representing the current state of the art in the modelling, simulation and physics of the interaction of hydrogen and helium with plasma facing materials in fusion reactors. This is the topic that will determine the success of the production of energy by future Tokamak reactors and it is here discussed by the world's experts. Topics covered are recycling of hydrogen isotopes; wall fuelling and wall pumping; active control of hydrogen recycling; hydrogen and helium behaviour in solids and liquid metals; and databases for recycling.
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