Dynamics of Quantized Vortices in a Torsional Oscillator under Rotation: Proposed Experiments in Supersolid 4He

2006 ◽  
Author(s):  
Minoru Kubota ◽  
Muneyuki Fukuda ◽  
Toshiaki Obata ◽  
Yuji Ito ◽  
Andrey Penzev ◽  
...  
Keyword(s):  
Torsional Oscillator ◽  
Quantized Vortices

scholarly journals Author Correction: Controlled creation and decay of singly-quantized vortices in a polar magnetic phase

2021 ◽  
Vol 4 (1) ◽  
Author(s):  
Y. Xiao ◽  
M. O. Borgh ◽  
L. S. Weiss ◽  
A. A. Blinova ◽  
J. Ruostekoski ◽  
...  
Keyword(s):  
Magnetic Phase ◽  
Quantized Vortices

Theory of quantized vortices in rotating superfluid 3He

Physica B+C ◽  
1984 ◽  
Vol 126 (1-3) ◽  
pp. 34-43 ◽  
Author(s):  
G.E. Volovik
Keyword(s):  
Superfluid 3He ◽  
Quantized Vortices

ABSORPTION SPECTRA OF ETHYLENE AND ETHYLENE-d4 IN THE VACUUM ULTRAVIOLET. II

1956 ◽  
Vol 34 (7) ◽  
pp. 643-652 ◽  
Author(s):  
P. G. Wilkinson
Keyword(s):  
Absorption Spectra ◽  
Vacuum Ultraviolet ◽  
Stable Equilibrium ◽  
Equilibrium Configuration ◽  
Rydberg States ◽  
Torsional Oscillator ◽  
Potential Barriers ◽  
First Order ◽  
Stretching Vibration ◽  
Vibrational Constants

The absorption spectra of ethylene and ethylene-d4 have been investigated in the 1300 Å to 1500 Å region using the first order of a 21-ft. vacuum grating spectrograph. Vibrational constants for the v2(ag) stretching vibration and the v4(au) twisting vibration have been determined for each of the observed five Rydberg states. The torsional oscillator–rotator treatment has been applied to the observed twisting data, and potential barriers hindering free rotation of 500 to 1200 cm−1 were obtained. It is concluded that the stable equilibrium configuration of the Rydberg states is not of D2h symmetry but is probably bent or staggered.

Flows of liquid4He due to oscillating grids

2017 ◽  
Vol 832 ◽  
pp. 578-599 ◽  
Author(s):  
P. Švančara ◽  
M. La Mantia
Keyword(s):  
Turbulent Flows ◽  
Particle Tracking Velocimetry ◽  
Reynolds Numbers ◽  
Quantized Vortices ◽  
Viscous Fluids ◽  
Statistical Distributions ◽  
Small Particles ◽  
Oscillating Grids ◽  
The Mean ◽  
Cryogenic Flows

We investigate cryogenic flows of liquid4He between two grids oscillating in phase, at temperatures ranging from approximately 1.3 to 2.5 K, resulting in suitably defined Reynolds numbers up to$10^{5}$. We specifically study the flow-induced motions of small particles suspended in the fluid by using the particle tracking velocimetry technique. We focus on turbulent flows of superfluid4He that occur below approximately 2.2 K and are known to display, in certain conditions, features different from those observed in flows of classical viscous fluids, such as water. We find that, at large enough length scales, larger than the mean distance between quantized vortices, representing the quantum length scale of the flow, the shapes of the velocity and velocity increment statistical distributions are very similar to those obtained in turbulent flows of viscous fluids. The experimental outcome strongly supports the view that, in the range of investigated parameters, particles probing flows of superfluid4He behave as if they were tracking classical flows.

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