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Development of a special rotor for centrifugal separation of isotopes in solid or liquid

Aug. 27 , 2009

The collaborative team of Japan Atomic Energy Agency and Maruwa Electronic Inc. has developed a prototype rotor for centrifugal separation of isotopes in solid or liquid pure-metals. This idea is based on the sedimentation of constitutional isotope atoms in solid or liquid under strong centrifugal force field that had reported by collaborative team of Kumamoto University and Japan Atomic Energy Agency [2, 3].
The developed rotor can be used to perform the isotope separation on at least solid or liquid metals under the conditions of up to 400�C in specimen temperature and 0.4 x 106 G in centrifugal force field, although it is need to develop a method to remove the concentrated isotopes from the rotor during the rotation.
It is expected to apply the method to the process of radioisotope production such as 99Mo.

[1] �Development of Special Rotor for Centrifugal Separation of Isotopes in Solid Pure-Metals�,
M. Ono, M. Sueyoshi, S. Okayasu, T. Hao, F. Esaka, T. Osawa, Y. Iguchi and T. Mashimo,
Review of Scientific Instruments, 80, 083908 -p1-p6 (2009).

[2] �Gravity-induced diffusion of isotope atoms in monoatomic solid Se�,
T. Mashimo, M. Ono, X. S. Huang, Y. Iguchi, S. Okayasu, K. Kobayashi and E. Nakamura;
Europhysics Letters 81, 56002-p1-p4 (2008).

[3] �Sedimentation of isotope atoms in monoatomic liquid Se�,
T. Mashimo, M. Ono, X. S. Huang, Y. Iguchi, S. Okayasu, K. Kobayashi and E. Nakamura;
Appl. Phys. Lett., 91, 231917-p1-p3(2007).


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