| Budget Amount *help |
¥2,200,000 (Direct Cost: ¥2,200,000)
Fiscal Year 1997: ¥400,000 (Direct Cost: ¥400,000)
Fiscal Year 1996: ¥1,800,000 (Direct Cost: ¥1,800,000)
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| Research Abstract |
The palladium point electrode was made of a palladium wire bu polishing with sand paper. Ahter annealing, the electrode was kept in 2 atm deuterium gas for 24 hours to be loading palladium. The deuterion to palladium loading ratio was measured to be about 0.6 at 24 hours after the start of loading. Next, the palladium electrode was set in atest cell, counter plane electrode was the bottom of the test cell with gap spacing of 10 mm. A DC high voltage of positive 4-8 keV was applied to the point electrode to form glow discharge condition. Measurment of excess neutron and gamma-ray started just after the voltage application. Each run continued for 24-l00 hours. The total number of runs was 59.
Non of excess neutron and gamma-ray was observed during any run. After, each run, the surface of palladium electrode was investigated by XPS and EDX.The XPS and EDX revealed that considerable area was covered with iron, manganese, copper and silver. Similar run was performed at out-door, where background neutron was expected to be higher level. Iron and scandium were detected in 3 runs out of total 13 runs by XPS.
Another experiment under 3 Torr deuterium gas with rod-plane electrode was performed. A deuterium loaded round plladium disc of 0.3 mm thick and 10 mm diameter was set on the plane chatode. Anomalous peak clearly deferent from background was observed in gamma-ray spectrum in 10 runs out of total 28 runs.the peak corresponds to 106 keV in the energy spectrum. A kind of nuclear reaction seemed to occur in or on the palladium electrode during transfer of deuteron through the palladium under DC glow dischage condition. Iron was also detected by XPS on the palladium with the anomalous emission.
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