Doshisha University (Private)

Applied Physics Laboratory is being developing variety of plasma devices for dry processes. Glow and arc discharges create
plasmas as environments suitable for producing new functional materials like carbon nano tubes and titanium oxides. Plasmas also
serve as sources of various ions with their energy precisely controlled to achieve specific reaction. Ions extracted from plasmas with
very low energy can form films of quality better than other preparation procedures.
Our laboratory participates in various research programs related to magnetically confined thermo nuclear fusion plasmas. Negative
ions of hydrogen (H-) easily lose an extra electron through collisions with photons and other particles even after they acquire kinetic
energy necessary to heat up a nuclear fusion plasma. Study on H- density measurement in a magnetic multi-cusp device indicates a
scenario for further enhancing the efficiency to produce, extract and focus the H- beam. The high-energy beam of hydrogen formed
by electron detachment from H- delivers energy to a plasma confined in a strong magnetic field.
Deeper understanding of the fundamental plasma physics obtained from the laboratory's research helps to find the most effective
way to realize a plasma for advanced applications. Many devices at Applied Physics Laboratory creates plasmas for one to learn
plasma physics as well as plasma application technologies. Experience in producing plasma through many different methods
together with prediction obtained by computer simulation software cuts down the cost and time to develop a complicated plasma
device.
We participate in many joint research programs conducted with other research institutes. These include National Institute for Fusion
Science, Japan Atomic Energy Research Agency, Advanced Institute for Science and Technology, RIKEN and many universities in
Japan as well as abroad.
Keywords
high energy physics
plasma material interaction
plasma sputtering
ion beam
nuclear fusion
plasma diagnostics
negative ion
plasma enhanced CVD
computational plasma physics