RESEARCH
The effect of the pyramid field on an electrical field
and on the electrical resistance of carbon materials
and on the electrical resistance of carbon materials
The All-Russian (Lenin) Electro-Technical Institute
An evaluation was carried out of the effect of the pyramid field on an electrical field in a long air-gap between a rod and a surface under a positively polarised impulse tension of 250/2500 μs. The basic set-up used had a rod-surface air-gap between the electrodes of 5.0 metres. The experimental set-up was the same, except that placed on the surface were 7 pieces of granite, each weighing 100 grammes that had been exposed in the pyramid and were placed on the surface around the perimeter of a 1-metre-diameter circle with its centre 0.5 metres from the centre of the surface.
An evaluation was carried out of the effect of the pyramid field on an electrical field in a long air-gap between a rod and a surface under a positively polarised impulse tension of 250/2500 μs. The basic set-up used had a rod-surface air-gap between the electrodes of 5.0 metres. The experimental set-up was the same, except that placed on the surface were 7 pieces of granite, each weighing 100 grammes that had been exposed in the pyramid and were placed on the surface around the perimeter of a 1-metre-diameter circle with its centre 0.5 metres from the centre of the surface.
100 voltage impulses were applied to each of the set-ups. The trajectories of the discharges and the impact damage points were recorded. On the basis of the results a plot of the impact points was produced. The discharge voltage throughout the experiments was approximately 1400 kV.
As a result of the study it was reliably established that the number of impact points inside the circle in the basic set-up was 5 times higher than in the experimental set-up.
Conclusion: the shape made up of pieces of stone exposed in the pyramid has powerful properties protecting the part of the surface inside it against damage from electrical discharges.
Graphite scientific research institute
We explored the influence of the pyramid field effect on the electrical resistance of carbon materials. The research object was pyrolytic carbon obtained by precipitating the products of the pyrolysis of methane on a graphite liner at a temperature of ~2100C. Measurements were taken by the four-probe method on direct current under normal conditions. The size of the sheet was ~25×10×1mm; the distance between the potential contacts ~3mm. The measuring current had a density of ~1500mA/cm2. Before exposure in the pyramid the electrical resistance was measured at ~5–7μΩ (micro ohms)/m. After exposure in the pyramid for 24 hours resistance approximately doubled. Such changes are anomalous for pyrocarbon. Even neutron bombardment with at about 1019 neutrons/cm2 does not produce changes of more than 5%.
Over time the changes taking place in electrical resistance varied from +100% to -100% following a sine curve. Besides, we discovered a reduction in the electrical resistance of silicon of semiconductor purity from 105 Ω/cm2 to 104 Ω/cm2 and a loss of high temprature superconductivity in samples after exposure in the pyramid.
A corresponding member of the Russian Academy of Sciences
Professor V.I.Kostikov, Dr. A.S. Katasonov
As a result of the study it was reliably established that the number of impact points inside the circle in the basic set-up was 5 times higher than in the experimental set-up.
Conclusion: the shape made up of pieces of stone exposed in the pyramid has powerful properties protecting the part of the surface inside it against damage from electrical discharges.
Graphite scientific research institute
We explored the influence of the pyramid field effect on the electrical resistance of carbon materials. The research object was pyrolytic carbon obtained by precipitating the products of the pyrolysis of methane on a graphite liner at a temperature of ~2100C. Measurements were taken by the four-probe method on direct current under normal conditions. The size of the sheet was ~25×10×1mm; the distance between the potential contacts ~3mm. The measuring current had a density of ~1500mA/cm2. Before exposure in the pyramid the electrical resistance was measured at ~5–7μΩ (micro ohms)/m. After exposure in the pyramid for 24 hours resistance approximately doubled. Such changes are anomalous for pyrocarbon. Even neutron bombardment with at about 1019 neutrons/cm2 does not produce changes of more than 5%.
Over time the changes taking place in electrical resistance varied from +100% to -100% following a sine curve. Besides, we discovered a reduction in the electrical resistance of silicon of semiconductor purity from 105 Ω/cm2 to 104 Ω/cm2 and a loss of high temprature superconductivity in samples after exposure in the pyramid.
A corresponding member of the Russian Academy of Sciences
Professor V.I.Kostikov, Dr. A.S. Katasonov
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