Issue |
EPL
Volume 85, Number 6, March 2009
|
|
---|---|---|
Article Number | 64001 | |
Number of page(s) | 5 | |
Section | Electromagnetism, Optics, Acoustics, Heat Transfer, Classical Mechanics, and Fluid Dynamics | |
DOI | https://doi.org/10.1209/0295-5075/85/64001 | |
Published online | 02 April 2009 |
Mass-dependent isotopic fractionation of a solid tin under a strong gravitational field
1
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: osawa.takahito@jaea.go.jp
Received:
24
December
2008
Accepted:
25
February
2009
Pure tin metals were centrifuged at 1106g
and at 220 °C for 100 hours, at 0.40
106g at 220–230 °C
for 24 hours, and at 0.25
106g
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 1.02
106g 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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