Frozen Helium

May 2011
Science Teacher;May2011, Vol. 78 Issue 5, p24
Academic Journal
The article discusses research on frozen helium. It references a study led by professor J. C . Séamus Davis at Cornell University which was published in the journal "Science." It discusses the findings on helium at solid and liquid states subjected to a range of temperatures, exploring the Heisenberg uncertainty principle to explain the results.


Related Articles

  • Microscopic construction of the two-fluid model for superfluid helium-4. Shygorin, P.; Svidzynskyj, A. // Condensed Matter Physics;Dec2009, Vol. 12 Issue 4, p657 

    Using a system of Heisenberg's equation of motion for both the normal and the anomalous correlation functions a two-fluid hydrodynamics for superfluid helium-4 was constructed. The method is based on a gradient expansion of the exact equations of motion for correlation functions about a local...

  • Elementary Excitations in Solid and Liquid 4He at the Melting Pressure. I. Todoshchenko; H. Alles; H. Junes; M. Manninen; A. Parshin; V. Tsepelin // Journal of Low Temperature Physics;Feb2008, Vol. 150 Issue 3/4, p258 

    Abstract   Recent discovery of a nonclassical rotational inertia (NCRI) in solid 4He below 0.2 K by Kim and Chan has revived great interest in the problem of supersolidity and initiated intensive study on the properties of solid 4He. A direct proof that the onset...

  • Observation of a superfluid phase in solid helium. Kalinin, I.; Kats, E.; Koza, M.; Lauter, V.; Lauter, H.; Puchkov, A. // JETP Letters;Aug2008, Vol. 87 Issue 11, p645 

    Evidence of a superfluid liquid phase present in polycrystalline helium at a temperature of 0.2 K and a pressure of 51 bar has been obtained by means of inelastic neutron scattering. The superfluid component is absent at a temperature of 0.6 K and the same pressure. Thus, a “solid...

  • Sound propagation in liquid He in impurity-helium solids. Kiselev, S. I.; Kiselev, S.I.; Khmelenko, V. V.; Khmelenko, V.V.; Lee, D. M.; Lee, D.M. // Low Temperature Physics;Sep2000, Vol. 26 Issue 9 

    The observed features of the attenuation of ultrasound in Im-He samples created after the introduction of impurity particles (D[sub 2],N[sub 2], Ne, Kr) in a volume of helium II show that a porous substance consisting of a loosely interconnected continuous network is created. It is formed by...

  • Solid helium: Supersolid: crystal or plastic? Ceperley, David // Nature Physics;Oct2006, Vol. 2 Issue 10, p659 

    The article highlights the experiment of Sébastien Balibar and colleagues that directly deals on the flow behavior of solid helium at low temperature using a barometer setting. The barometer was filled with solid helium and was immersed in a bath of pressurized liquid helium. The group was...

  • Semiclassical description of antiproton collisions with molecular Hydrogen. Beck, W. A.; Wilets, L.; Alberg, M. A. // AIP Conference Proceedings;2005, Vol. 796 Issue 1, p276 

    In contrast to our previous work modeling antiproton capture on Helium, with its relatively straightforward, fixed center target, extending the semiclassical approach to molecular hydrogen, i.e. a multi-center target with target masses identical to the projectile, requires that we revisit the...

  • The biggest little molecule in the world. Holmes, Bob // New Scientist;4/1/95, Vol. 146 Issue 1971, p18 

    Focuses on research on the properties of helium molecules conducted by Ronald Gentry of the University of Minnesota and his team. Use of a theory from quantum mechanics called Heisenberg's uncertainty principles to explain the molecule's properties; Length of the chemical bond joining the two...

  • Impurity condensation in liquid and solid helium. Gordon, E. B.; Torstveit, Steve // Low Temperature Physics;Oct2004, Vol. 30 Issue 10, p756 

    It is shown from an analysis of x-ray structural and IR spectroscopic studies that when impurity particles are introduced into liquid or solid helium, the clusters formed in the cold part of a gas jet have a pronounced spatial separation of impurities with different volatility. In particular, in...

  • Mass Flux Through a Cell Filled with Solid He Induced by the Thermo-Mechanical Effect. Ray, M.; Hallock, R. // Journal of Low Temperature Physics;Mar2011, Vol. 162 Issue 5/6, p421 

    We have induced a mass flow through a sample cell filled with hcp solid He by the imposition of a temperature difference between two reservoirs filled with superfluid liquid helium connected to each other by porous Vycor glass rods in series with the bulk solid He. The Vycor rods allow us to...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics