Gravity-induced diffusion of isotope atoms in monoatomic solid Se

T. Mashimo, M. Ono, X. S. Huang, Y. Iguchi, S. Okayasu, Katsura Kobayashi, Eizou Nakamura

Research output: Contribution to journalArticle

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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.

Original languageEnglish
Article number56002
JournalEPL
Volume81
Issue number5
DOIs
Publication statusPublished - Mar 1 2008

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isotopes
gravitation
crystals
atoms
isotope separation
gravitational fields
impurities

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Gravity-induced diffusion of isotope atoms in monoatomic solid Se. / Mashimo, T.; Ono, M.; Huang, X. S.; Iguchi, Y.; Okayasu, S.; Kobayashi, Katsura; Nakamura, Eizou.

In: EPL, Vol. 81, No. 5, 56002, 01.03.2008.

Research output: Contribution to journalArticle

Mashimo T, Ono M, Huang XS, Iguchi Y, Okayasu S, Kobayashi K et al. Gravity-induced diffusion of isotope atoms in monoatomic solid Se. EPL. 2008 Mar 1;81(5). 56002. https://doi.org/10.1209/0295-5075/81/56002
Mashimo, T. ; Ono, M. ; Huang, X. S. ; Iguchi, Y. ; Okayasu, S. ; Kobayashi, Katsura ; Nakamura, Eizou. / Gravity-induced diffusion of isotope atoms in monoatomic solid Se. In: EPL. 2008 ; Vol. 81, No. 5.
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