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| Research
Directors |
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Prof. Shunsuke
Otani
The University of Electro-Communications |
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Prof. Joshua
Silver
Vice President at University of
Oxford, New College |
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Counterpart Organization: University of Oxford/National
Physical Laboratory (England)
Supporting National Agency: The U.K. Office of Science
and Technology/The U.K. Department of Trade and Industry |
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| Multivalent ions, which are new particles
and gaining attention in recent years, have distinguishing
features including naked heavy ions without electrons and
multivalent ions with high electric charge; those are not
found in neutral atoms or low-valence ions. In this collaborative
project with the U.K., we produced multivalent ions using
electron beams with high energy and density, fabricating an
Electron Beam Ion Trap (EBIT) that stores those ions for long
hours toward conducting: 1) precision prisms of multivalent
ions, 2) a study on collision process between electrons and
multivalent ions and, 3) microscopic grasp of interactions
between multivalent ions and the solid surface. |
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| A new technique called a "forced evaporative
cooling" enabled us to cool ions about up to 10eV per
valence, which is the highest level in the world; it means
we made it possible while it is impossible at other places.
Moreover, research on micro-structural modification as multivalent
ions being placed onto solid surface is expected to become
a basic knowledge of applying to surface processing in the
future. |
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