Volume 85, Number 6, March 2009
|Number of page(s)||5|
|Section||Electromagnetism, Optics, Acoustics, Heat Transfer, Classical Mechanics, and Fluid Dynamics|
|Published online||02 April 2009|
Mass-dependent isotopic fractionation of a solid tin under a strong gravitational field
Neutron Imaging and Activation Analysis Group, Quantum Beam Science Directorate, Japan Atomic Energy Agency (JAEA) - Tokai, Naka-Gun, Ibaraki, 319-1195, Japan
2 Advanced Science Research Center, Japan Atomic Energy Agency (JAEA) - Tokai, Naka-Gun, Ibaraki, 319-1195, Japan
3 Research Group for Analytical Science, Japan Atomic Energy Agency (JAEA) - Tokai, Naka-Gun, Ibaraki, 319-1195, Japan
4 Shock Wave and Condensed Matter Research Center, Kumamoto University - Kumamoto 860-8555, Japan
Corresponding author: email@example.com
Accepted: 25 February 2009
Pure tin metals were centrifuged at 1106g and at 220 °C for 100 hours, at 0.40106g at 220–230 °C for 24 hours, and at 0.25106g at 220 °C for 24 hours. Their isotopic compositions were measured by a secondary ion mass spectrometer (SIMS). 116Sn/120Sn and 124Sn/120Sn ratios of the 1.02106g sample were considerably different than the initial compositions, and the magnitude of isotopic fractionation reached 2.6±0.1%. A three-isotope diagram of 116Sn/120Sn vs. 124Sn/120Sn shows conclusively that isotopic fractionation caused by a gravitational field depended only on the isotopic mass.
PACS: 47.57.ef – Sedimentation and migration / 67.80.dj – Defects, impurities, and diffusion / 66.30.Fq – Self-diffusion in metals, semimetals, and alloys
© EPLA, 2009
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