ISSN:
1573-7357
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract The internal structure of hcp4He crystals was studied by SR (synchrotron radiation) X-ray topography. Subboundaries in the crystals appeared as black or white bands in the X-ray topographs. In one of the hcp4He crystals, the subboundaries turned out to be flat planes perpendicular to the basal plane. They were small-angle tilt boundaries which consisted of basal edge dislocations. The dislocation spacing in one of the subboundaries was determined to be 800 nm and the total density of the boundary dislocations to be 2.6 × 105 cm−2. The subboundaries in another hcp4He crystal were curved and/or branching, indicating that the crystal was strained.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00753841
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