Mashimo, Tsutomu et al. (2008) Gravity-induced diffusion of isotope atoms in monoatomic solid Se, A Letters Journal Exploring The Frontiers of Physics, 81, 56002, doi: 10.1209/0295-5075/81/56002. < 20100403102546217.admin > pub
  • abstract:

    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.

  • doi: 10.1209/0295-5075/81/56002
  • modified at 2020-05-11
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  • name
  • Mashimo, Tsutomu
  • Ono, Masao
  • Huang, X. S.
  • Iguchi, Yusuke
  • Okayasu, Satoru
  • Kobayashi, Katsura
  • Nakamura, E.