Share

Evidence for a Bose-Einstein condensate in liquid helium 4 from quantum evaporation.

Author(s) : WYATT A. F. G.

Type of article: Article

Summary

Bose-Einstein condensation is a purely quantum phenomenon whereby a macroscopic number of identical atoms occupy the same single-particle state. Liquid helium 4 is generally accepted to have such a condensate. The current issue is not whether there is a condensate in this system, but how to demonstrate its existence in a clear and simple way. An earlier measurement of evaporation from liquid helium 4 caused by a collimated beam of phonons provides such a demonstration. This process of quantum evaporation also opens the possibility for creating beams of phase-coherent atoms of short wavelength.

Details

  • Original title: Evidence for a Bose-Einstein condensate in liquid helium 4 from quantum evaporation.
  • Record ID : 1999-1365
  • Languages: English
  • Source: Nature - vol. 391 - n. 6662
  • Publication date: 1998/01/01
  • Document available for consultation in the library of the IIR headquarters only.

Links


See the source

Indexing