| Project/Area Number |
12650270
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
電力工学・電気機器工学
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| Research Institution | NIIGATA UNIVERSITY |
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Principal Investigator |
SEKINE Seishi Faculty of Engineering, Niigata University, Professor, 工学部, 教授 (60018489)
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| Co-Investigator(Kenkyū-buntansha) |
OHKAWA Masashi Faculty of Engineering, Niigata University, Associate Professor, 工学部, 助教授 (90213644)
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| Project Period (FY) |
2000 – 2001
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| Project Status |
Completed (Fiscal Year 2001)
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| Budget Amount *help |
¥3,700,000 (Direct Cost: ¥3,700,000)
Fiscal Year 2001: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 2000: ¥3,100,000 (Direct Cost: ¥3,100,000)
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| Keywords | incandescent radiator / high luminous efficacy / microcavity / tungsten / complex index of refraction / ellipsometer / 高効率白熱ランプ / 赤外放射抑制 / クラスター発光 / 表皮長 |
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| Research Abstract |
[1] Using KrF excimer laser, we made a sample of tungsten microcavity radiator that was perforated 640000 cylindrical cavities of diameter 5 μm in 10 μm intervals at central region 8 mm x 8 mm of the quartz glass on which tungsten of thickness 1 μm was deposited. The cutoff wavelength of the cavity of aperture 5 μm is about 9 μm and the temperature of black body at which the radiation of wavelength 9 μm becomes a maximum is about 320 K. Therefore, we measured spectral radiant existances of the sample heated at 300〜700 K. By analyzing measurement results in detail based on a theoretical analysis, we evaluated cutoff characteristics of the sample.
[2] Complex index of refraction of the tungsten is necessary for design of the tungsten microcavity radiators and evaluation of their luminous efficacy. Therefore, we constructed an ellipsometer in order to measure the complex index of refraction of the tungsten and verified that this ellipsometer measures the complex index of refraction of the tungsten at a high accuracy.
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