| Budget Amount *help |
¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2013: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2012: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2011: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
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| Research Abstract |
Compared with an X-ray tube, the X ray intensity of the X-rays generating method only by the temperature change of pyroelectric crystals (LiTaO_3) is instable and discontinuous principally. The purpose of this study is to clarify the instability and improve the discontinuity. One of the factors of instability was related to creeping discharge at the surface of a crystal and was improved drastically by the optimization of the electron supply by a photoelectric effect or the cycle a temperature change. Using two or more crystals and optimizing both the cycle and phase of a temperature change, the shape, and target material, the instability of intensity was improved. The miniaturized X-rays generators with a high vacuum enclosure were fabricated and the excellent X-rays-emission characteristic was achieved.
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