1995 Fiscal Year Final Research Report Summary
STUDY OF EXCESS HEAT PRODUCTION MECHANISUM IN DEUTERIUM LOADED SOLID UNDER HIGH ELECTRIC FIELD
| Project/Area Number |
06650313
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| Research Category |
Grant-in-Aid for General Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Research Field |
電力工学・電気機器工学
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| Research Institution | IWATE UNIVERSITY |
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Principal Investigator |
YAMADA Hiroshi IWATE UNIVERSITY ELECTRICAL AND ELECTRONIC ENGINNEERING PROFESSOR, 工学部, 教授 (60125482)
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| Project Period (FY) |
1994 – 1995
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| Keywords | High voltage application / Deuterium / Palladium / Neutron / Tungsten bronze / Excess heat / Hydrogen loading / Helium 4 |
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| Research Abstract |
A neutron measurement system is used to detect 2.45MeV neutrons from the D(d, n)^3He fusion branch, during glow discharge with deuterium loaded palladium point electrode in 2 atm deuterium gas. The efficiency of the detector was measured to be approximately 1% using ^<252>Cf source with an intensity of 2.3* 10^4 neutrons s^<-1>. The average background of neutron flax without test cell is about 25 counts per hour. The deuterion to palladium loading ratio was measured to be about 0.6 at 24 hours after the start of loading.
No excess count was usually observed, however, a burst of neutron was occasionally detected under the application of a slightly lower voltage than that for flashover. Counting rate significantly higher than the background level was observed in 2 runs out of 37 runs. The observed highest counting rate of 2,700 counts for 5 seconds, is equivalent to 9*10^4 times larger than the background counting rate.
After each run, the tip of point electrode was observed using microscope. It is found that the tip of neutron bursting electrode was covered with a black deposit. To the contrary, no remarkable change in the tip was observed for other electrodes. Furthermore, XPS investigation revealed that the black deposit was carbon. The origin of the carbon could not be due to such as electro migratio in palladium point electrode.
It seems that the current density of the order 0.1A・cm^<-2> due to DC high-voltage application would be responsible for the transition of deuterons from octahedral sites to other sites near surface in palladium. It would be that a nuclear fusion from deuterium to such as ^4He, accompanied by neutron emission, took place during the transition. It is plausible that a next fusion from three 4He into a carbon atom folows.
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