1 edition of Collective motion of quantized vortex lines in rotating superfluid ³He-B found in the catalog.
Collective motion of quantized vortex lines in rotating superfluid ³He-B
by Helsinki University of Technology, Low Temperature Laboratory in Otaniemi [Finland]
Written in English
|Statement||M. Krusius ... [et al.].|
|Series||Report,, TKK-F-A707, Report (Teknillinen korkeakoulu. Teknillisen fysiikan osasto) ;, TKK-F-A707.|
|LC Classifications||Q175.4 .C65 1992|
|The Physical Object|
|Pagination||69 p. :|
|Number of Pages||69|
|LC Control Number||93231103|
A quantum vortex in a superfluid is a point-like hole around which the superfluid flows. This flow is quantized in the sense that the circulation—which is the sum of the velocity along a path around the vortex—takes on discrete values .The quantum unit of circulation is h ∕ m, where h is Planck’s constant and m is the mass of the superfluid particles. Skip to content. main page. Menu.
Dynamical Instability of a Doubly Quantized Vortex in a Bose. by fesi. Splitting dynamics of doubly quantized vortices in Bose. Abstract: The quantization of vortex lines in superfluids requires the introduction of their density $\C L(\B r,t)$ in the description of quantum turbulence. The space homogeneous balance equation for $\C L(t)$, proposed by Vinen on the basis of dimensional and physical considerations, allows a number of competing forms for the production term $\C P$.
principles of vortex dynamics in superfluids this book addresses the problems of vortex dynamics in for how a superfluid dissipates its energy via quantised vortices the authors employ a recently dynamics vortex motion abstract a comprehensive overview of the basic principles of vortex dynamics. CiteSeerX - Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): We obtain the explicit expression of the friction on a moving quantized vortex, following the formulation of Thouless, Ao and Niu. It is shown that the friction on a moving vortex is sensitive to details but does not change the transverse force. We provide a general thermodynamic interpretation for the mutual.
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Collective motion of quantized vortex lines in rotating superfluid 3He-B Article (PDF Available) in Physical review. B, Condensed matter 47(22) July with 44 Reads. The low-pressure, low-temperature phase is characterized by an array of singly-quantized vortices that spontaneously breaks axial rotation symmetry, exhibits anisotropic vortex currents and an axial current anomaly (D-core phase).Author: Robert C.
Regan, J. Wiman, J. Wiman, J. Sauls. There are two well known theories to describe the motion and thermodynamics of superfluids when a large number of quantized vortex lines are present and when the phenomena under study are on scales large compared with the vortex line spacing.
These works have been criticised on the grounds that their governing equations for the smoothly varying, spatially averaged, fields do not Cited by: Quantized Vortex Dynamics and Superfluid Turbulence. Posted on by gabaz. Quantized Vortex Dynamics and Superfluid Turbulence SpringerLink.
This book discusses the properties of quantized vortex lines in superfluid helium II in the light of research on vortices in modern fluid mechanics. Stability of a Vortex in a Rotating Trapped. The fluid circulates around quantized vortex lines.
The vortex lines are shown as yellow in the figure, and the circulating flow around them is indicated by arrows. There is no vorticity outside of the lines because the velocity near each line is larger than further away. (In mathematical terms curl v = 0, where v(r) is the velocity field.).
Quantized Vortex Dynamics and Superfluid Turbulence Next Quantized Vortex Dynamics and Superfluid Turbulence. By vome. Quantized Vortex Dynamics and Superfluid Turbulence Barenghi. Thus, when superfluid 3 He-A is slowly set into rotation, doubly quantized vortex lines are formed first and so the flow velocity never reaches high enough values for singly quantized.
ment: injection of vortex lines into vortex-free flow and NMR study of their evolution. tion in vortex dynamics from regular at higher temperatures to turbulent at lower temperatures. ion of vorticity in rotating column as a prop-agating front: Experimental results, numerical sim-ulations and analytic studies.
Quantized Vortex Dynamics and Superfluid Turbulence. Quantized Vortex Dynamics and Superfluid Turbulence Barenghi. The motion of a single vortex line in superfluid 4 He nearT λ is studied within linear response of the vortex-line velocityv L to a homogeneous counterflowv s −v n is calculated up to lowest order of renormalized perturbation theory.
The critical temperature dependence is taken into account via the renormalizationgroup theory. Search Form. © main page This blog is proudly powered by WordPress. Quantised Vortices A Handbook of Topological Excitations.
Remarkably, as the liquid becomes superfluid, it gradually stops its rotation. This expulsion of vorticity, analogous to the Meissner effect, provides a fundamental experimental definition of superfluidity.
As a consequence, superfluids not only posses quasiparticles like phonons, but also quantized vortex. When a cylindrical container filled with superfluid 3 He A is rotated around its symmetry axis, several different configurations of quantized vorticity are possible: which of them will be preferred depends on the specifics how the rotating state is formed.
The most unusual is the vortex sheet, a domain wall in the order parameter texture into which vortex lines are confined. quantized vortex dynamics and superfluid turbulence hardcover by cf barenghieditor Posted By Michael CrichtonPublic Library TEXT ID fbec Online PDF Ebook Epub Library QUANTIZED VORTEX DYNAMICS AND SUPERFLUID TURBULENCE HARDCOVER.
Quantized Vortex Dynamics And Superfluid Turbulence Cf this book springs from the programme quantized vortex dynamics and sup uid turbulence held at the isaac newton institute for mathematical sciences university of cambridge in august what motivated Quantized Vortex Dynamics Superfluid Turbulence Isaac.
In physics, a quantum vortex represents a quantized flux circulation of some physical quantity. In most cases quantum vortices are a type of topological defect exhibited in superfluids and existence of quantum vortices was first predicted by Lars Onsager in in connection with superfluid helium.
Onsager reasoned that quantisation of vorticity is a direct consequence of. Very recently, Shivamoggi [“ Vortex motion in superfluid 4 He: Reformulation in the extrinsic vortex-filament coordinate space,” Phys.
Rev. B 84, ()] studied the extrinsic form of the local induction approximation (LIA) for the motion of a Kelvin wave on a vortex filament in superfluid 4 He, and obtained some results in a cubic approximation. Quantized Vortex Dynamics and Superfluid Turbulence 7 August to 25 August Report from the Organisers: CF Barenghi (Newcastle), RJ Donnelly (Oregon), WF Vinen (Birmingham) The subject of the programme was primarily superfluid turbulence and its explanation in terms of quantum vortex.
main page. Archives; Next; Posted on by gucy by gucy. The vortex filament model has become a standard and powerful tool to visualize the motion of quantized vortices in helium superfluids. In this article, we present an overview of the method and highlight its impact in aiding our understanding of quantum turbulence, particularly superfluid helium.
A first order phase change in the core structure, along a well defined transition line on the P-T-plane, appears a discontinuity in the magnetization of the rotating 3 He-B.
A similar transition, marked by a jump in the critical velocity for vortex creation, is also observed in .a comprehensive overview of the basic principles of vortex dynamics in superfluids this book addresses the problems of vortex dynamics in all three superfluids available in laboratories 4he 3he and bec of Dynamics Of Quantized Vortices In Rotating Superfluid keywords superfluidity fluid dynamics vortex motion abstract a comprehensive.