Gravity-induced diffusion of isotope atoms in monoatomic solid Se

T. Mashimo, M. Ono, X. S. Huang, Y. Iguchi, S. Okayasu, K. Kobayashi, E. Nakamura

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)


A strong gravitational field resulted in the gravity-induced diffusion (sedimentation) of isotope atoms in monoatomic solid Se. The layer crystalline morphology consisting of three zones of the fine-grained crystals, the long crystals and feather-shaped crystals grown parallel to gravity direction appeared in the specimen ultracentrifuged at (0.8-1)×106 G and at 190 °C. Change in the concentration ratio 82Se/ 76Se of >0.8% was observed in the grown crystalline region. These results show an evidence for the sedimentation of substitutional atoms in solids via self-diffusion, and suggest the possibility of application to the control of impurity and crystalline states as well as to isotope separation.

Original languageEnglish
Article number56002
Issue number5
Publication statusPublished - Mar 1 2008

ASJC Scopus subject areas

  • General Physics and Astronomy


Dive into the research topics of 'Gravity-induced diffusion of isotope atoms in monoatomic solid Se'. Together they form a unique fingerprint.

Cite this