By using aerosol deposition, BaTiO 3 films of more than 0.5 mm thickness were fabricated at room temperature on metal substrates. The dielectric constant of the films was 80 and their tan was 0.02 at 1 MHz. The change in the temperature characteristics of the capacitance of the films was rectilinear from room temperature to 180 C. The films were fabricated on the substrates with Ra values of 0.011 and 0.048 mm. The breakdown voltages of the films were measured: the maximum value was 220 V/mm. The volume resistivities of thin films depended on film thickness. They stabilized at a value of 10 12 Ácm when the film thickness was 5 mm or more. These electric properties are considered to depend on film density. We manufactured a noise-cutting probe with a decoupling capacitor as an inspection apparatus for microwave devices in trial production using the BaTiO 3 films fabricated by aerosol deposition. The contact probe had a 0.3 mm diameter, a 5 mm length, and a 6-mm-thick BaTiO 3 film on the outer surface. Its capacitance was 0.5 nF. Its withstand voltage was 700 V. These values are sufficient for this application.

Transition metal catalysts in various liquid polymer media supported on silica gel were prepared and used for vapor-phase hydrosilylation. Tetraammineplatinum(II) chloride and potassium hexachloroplatinate(IV) in a polyethylene glycol (PEG) medium showed high and stable activity. Deactivation of the catalyst was not observed unless a high platinum concentration in PEG was used. When the amount of PEG was 40 vol% of the pore volume of silica gel, PEG was coated on the pore walls of the silica gel, and did not block the pore openings. Active species in the PEG were formed only during the reaction.

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A stable 50 kW slow-extracted beam has been being delivered to the experimental hall (hadron hall) to execute various experiments on nuclear physics and elementary particle physics in J-PARC. However future experimental programs need beam powers much more than 100 kW. The slow extraction technique makes an inevitable beam loss around the electrostatic septum (ESS) using a septum to make an electric field distribution with a step function. The beam loss generated by hitting at the septum is most critical and limits the beam power. Tungsten including rhenium (W/Re) is used for the septum material for the present ESSs. If the material with a low atomic number can be used for the septum, the beam loss can be drastically reduced. We have started to develop carbon nanotube (CNT) wires for the ESS. Preliminary voltage supply test has been carried out using a test stand fabricated to investigate various basic characteristics of the CNT wire.