Sedimentation of isotope atoms in monatomic liquid Se

Tsutomu Mashimo, Masao Ono, Xinsheng Huang, Yusuke Iguchi, Satoru Okayasu, Katsura Kobayashi, Eizou Nakamura

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

A strong gravitational field resulted in the sedimentation of isotope atoms in monatomic liquid. The concentration ratio Se82 Se76 increased by greater than 3.5% in specimen ultracentrifuged at (0.7-0.9) × 106 G and at 300 °C. The recovered sample had a feather-shaped crystalline morphology. The concentration gradient was nearly twice that of the steady state analytical result (ideal gas system), indicating a nonideal system diffusion. The present result is evidence of sedimentation of substitutional atoms in condensed matter via self-diffusion and suggestes its possible application to isotope separation, crystalline control, and matter dynamics in massive star.

Original languageEnglish
Article number231917
JournalApplied Physics Letters
Volume91
Issue number23
DOIs
Publication statusPublished - 2007

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isotopes
isotope separation
ideal gas
liquids
massive stars
gravitational fields
atoms
gradients

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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Sedimentation of isotope atoms in monatomic liquid Se. / Mashimo, Tsutomu; Ono, Masao; Huang, Xinsheng; Iguchi, Yusuke; Okayasu, Satoru; Kobayashi, Katsura; Nakamura, Eizou.

In: Applied Physics Letters, Vol. 91, No. 23, 231917, 2007.

Research output: Contribution to journalArticle

Mashimo, Tsutomu ; Ono, Masao ; Huang, Xinsheng ; Iguchi, Yusuke ; Okayasu, Satoru ; Kobayashi, Katsura ; Nakamura, Eizou. / Sedimentation of isotope atoms in monatomic liquid Se. In: Applied Physics Letters. 2007 ; Vol. 91, No. 23.
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