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- 2.17 KLearn more:✕This summary was generated using AI based on multiple online sources. To view the original source information, use the "Learn more" links.Superfluid phase at temperature below 2.17 K (−270.98 °C).en.wikipedia.org/wiki/Liquid_heliumOnly liquids and gasses can be superfluids. For example, helium's freezing point is 1 K (Kelvin) and 25 atmospheres of pressure, the lowest of any element, but the substance begins exhibiting superfluid properties at about 2 K.www.allthescience.org/what-is-a-superfluid.htmThe liquid boils at 4.2 K (−452°F or ‐269°C), a significantly lower temperature than any other substance, except hydrogen,, and below 2,172 K (−455.76°F) it has exceptional superfluidity characteristics, especially the possibility of flowing between small streams without any friction present.cryospain.com/superfluid-the-importance-of-liquid-…
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See all on WikipediaSuperfluid helium-4 - Wikipedia
Superfluid-helium technology is used to extend the temperature range of cryocoolers to lower temperatures. So far the limit is 1.19 K, but there is a potential to reach 0.7 K. See more
Superfluid helium-4 (helium II or He-II) is the superfluid form of helium-4, an isotope of the element helium. A superfluid is a state of matter in which matter behaves like a See more
Known as a major facet in the study of quantum hydrodynamics and macroscopic quantum phenomena, the superfluidity effect was … See more
Superfluids, such as helium-4 below the lambda point, exhibit many unusual properties. A superfluid acts as if it were a mixture of a normal component, with all the properties of a … See more
Landau two-fluid approach
L. D. Landau's phenomenological and semi-microscopic theory of superfluidity of helium-4 earned him … See more
Recently in the field of chemistry, superfluid helium-4 has been successfully used in spectroscopic techniques as a quantum solvent. … See more
Thermodynamics
Figure 1 is the phase diagram of He. It is a pressure-temperature (p-T) diagram indicating the solid and liquid regions separated by the melting curve (between the liquid and solid state) and the liquid and gas region, … See moreWikipedia text under CC-BY-SA license Liquid helium - Wikipedia
WEBLiquid helium is a physical state of helium at very low temperatures at standard atmospheric pressures. Liquid helium may show superfluidity. …
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Liquid helium, superfluidity - HyperPhysics
WEBSuperfluidity. A remarkable transition occurs in the properties of liquid helium at the temperature 2.17K, called the "lambda point" for helium. Part of the liquid becomes a …
Superfluidity - Wikipedia
WEBSuperfluidity occurs in two isotopes of helium (helium-3 and helium-4) when they are liquefied by cooling to cryogenic temperatures. It is also a property of various other …
Strange but True: Superfluid Helium Can Climb Walls
WEBFeb 20, 2009 · Key to the effect is helium's unique ability to remain liquid down to absolute zero (–459.67 degrees F, or –273.15 degrees C), the temperature at which atoms …
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Superfluidity: the mysterious quantum effect that became a …
WEBSuperfluid begins in the late 19th century with the race to liquify gases such as oxygen, nitrogen and hydrogen – a race that created the modern field of cryogenics. Helium …
Introduction to Liquid Helium - NASA
WEBSuperfluid Helium. For helium 4, crogenicists distinguish two liquid forms: helium I and helium II. Helium I is the warmer form; helium II is the colder. The transition temperature, called the "lambda point", is 2.17 K. (It …
Secrets of superfluid helium explored | Department of Physics
WEBWhen the isotope of helium known as helium-3 is cooled to 3.2 degrees above absolute zero it changes from gas to liquid – what physicists call a “change of state.” Cool it …
Superfluid Helium - MIT - Massachusetts Institute of …
WEBThe predicted BEC transition temperature of Tc=3.13°K at the density of helium is not far off. Lazlo Tisza's two fluid model can explain the thermo-mechanical effects. Key differences of helium superfluidity and BEC:
Eighty years of superfluidity - Nature
WEBEighty years of superfluidity. In 1938, two studies demonstrated that liquid helium-4 flows without friction or viscosity at temperatures close to absolute zero. The finding led to major advances...
WEBA pressure gradient will tend to drive both fluids in the same direction. An increase in temperature increases ˆn but decreases ˆs, so a temperature gradient tends to drive …
52.11: Superfluids - Physics LibreTexts
WEB52.11: Superfluids. Page ID. When liquid helium-4 ( 4He 4 H e ) is cooled below a critical temperature of 2.17 K 2.17 K (called the lambda point), a sudden phase transition …
Superfluidity goes 2D | Nature Physics
WEBHowever, in superfluid helium, even at the lowest temperature, where the superfluid fraction should be nearly 100%, the strong interactions between the helium atoms limit the …
Superfluidity | Physics of Low-Temperature Fluids | Britannica
WEBSuperfluidity, the frictionless flow and other exotic behaviour observed in liquid helium at temperatures near absolute zero (−273.15 °C, or −459.67 °F), and (less widely used) …
WEBliqUid helium is a rewarding subject for the study of thermodynamic properties, especially because helium II, the lower temperature phase, exhibits the property of superfluidity. …
Superfluid Helium | SpringerLink
WEBBelow a certain pressure, helium remains liquid for arbitrarily small temperatures, allowing for a superfluid phase below a critical temperature, sometimes called λ-temperature. …
Understanding Liquid Helium, The Superfluid | FTLOScience
WEBtl;dr: As a container of liquid helium is cooled past its λ point, a fraction of its particles ‘condense’ and exist in their lowest energy state. This superfluid phase possesses an …
WEBThere are two classes of reason that call for the use of superfluid helium as a coolant for superconducting devices; namely , the lower temperature of operation, and the …
Superfluid reacts strangely under pressure change
WEBBy varying the pressure of the system while lowering the temperature, the researchers caused the superfluid to transition at even lower limits, enhancing its supercooling. This …
Physics - Looking Inside the Superfluid Helium-3 Universe
WEBWhen liquid helium-3 is cooled to millikelvin temperatures, it transitions into a state of matter called a superfluid. From the outside, superfluid helium-3 looks like a simple, …
Superfluid Helium - an overview | ScienceDirect Topics
WEBAt these temperatures, liquid helium undergoes a phase transition to the superfluid state and becomes a quantum fluid, known as He II or superfluid helium. He II can be …
Phys. Rev. A 101, 012336 (2020) - Integrating superfluids with ...
WEBAbstract. Superfluid helium's low-loss dielectric properties, excellent thermal conductivity, and unique collective excitations make it an attractive candidate to incorporate into …
Superfluid helium 3 - TKK
WEBSuperfluid 3 He. Here we discuss the superfluid phases of liquid helium 3. For more general introduction to helium see here. The phase diagram of 3 He at low temperatures is …
High-resolution laser resonances of antiprotonic helium in …
WEBHere we show that when an exotic helium atom with a constituent antiproton7–9 is embedded into superfluid helium, its visible-wavelength spectral line retains a sub …
[2408.03931] Superfluid quantum criticality and the thermal …
WEBSuperfluid quantum criticality and the thermal evolution of neutron stars. The neutron star starts to cool down shortly after its birth by emitting neutrinos. When it is cold enough, …
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