Share

Observation of helium 3 crystallization down to 1 milliK using a cooled Charge Coupled Device camera.

Author(s) : WAGNER R., RAS P. J., REMEIJER P., STEEL S. C., FROSSATI G.

Type of article: Article

Summary

The authors describe a new setup for optical observations (particularly of helium crystals) at ultralow temperatures. It is conceptually different from the usual optical setups, which require the use of optical windows in the cryostat. Their optical system, including the light source and camera, is placed inside the vacuum can of a dilution refrigerator cryostat. They have succeeded in filming the growth of helium 3 crystals in contact with the superfluid B phase, down to 1 milliK. The optical system can easily be combined with a nuclear demagnetization stage, and a simple extension of the image transport system will allow them to study helium 3 crystals in high magnetic fields. The entire setup is described, and some typical images are shown.

Details

  • Original title: Observation of helium 3 crystallization down to 1 milliK using a cooled Charge Coupled Device camera.
  • Record ID : 1997-2629
  • Languages: English
  • Source: Commun. Kamerlingh Onnes Lab./J. low Temp. Phys. - 33 ref./vol. 95 - n. 455
  • Publication date: 1994
  • Document available for consultation in the library of the IIR headquarters only.

Links


See the source

Indexing