Fig.7-7　(a) Ultracentrifuge (b) Unit developed for separating isotopes in solids or liquids (rotor and molten-specimen droplet injector)

The transferring of indium in the rotor

(1) is the initial state of a molten-indium droplet (0.1g-In/shot)
(2) ¹¹³In-enriched move to (3) by overflow

Physical properties of In

Melting point : 156.4 °C
Specific gravity : 7.9

Natural percentage of isotopes :

¹¹³In : 4.3%, ¹¹⁵In: 95.7%

Fig.7-7　(a) Ultracentrifuge (b) Unit developed for separating isotopes in solids or liquids (rotor and molten-specimen droplet injector)

A strong gravitational field can be generated by rotating the rotor at very high speed in an ultracentrifuge. The rotor temperature can be raised up to 400 °C using a heater in a vacuum chamber.

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