2013 Fiscal Year Final Research Report
Electron emission from pyroelectric crystal excited by laser light and its miniature X-ray source application
| Project/Area Number |
23360022
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Thin film/Surface and interfacial physical properties
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| Research Institution | Osaka University |
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Principal Investigator |
TAKAI Mikio 大阪大学, 極限量子科学研究センター, 名誉教授 (90142306)
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| Co-Investigator(Kenkyū-buntansha) |
WAKAYA Fujio 大阪大学, 極限量子科学研究センター, 准教授 (60240454)
ABO Satoshi 大阪大学, 極限量子科学研究センター, 助教 (60379310)
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| Co-Investigator(Renkei-kenkyūsha) |
ISHIDA Toshiyuki アドテックサイエンスリサーチ
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| Project Period (FY) |
2011-04-01 – 2014-03-31
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| Keywords | 微小Ｘ線源 / 焦電体 / 分極 / 焦電係数 / レーザ励起 / 電子放出 / Ｘ線分析応用 / Ｘ線2次元イメージング |
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| Research Abstract |
A miniature X-ray source using electron emission from a pyroelectric crystal excited by a laser light was developed without an external high voltage power supply. Electron emission from the crystal and X-ray generation from the counter electrode were observed with a continuous wave (CW) infra-red (IR) laser light. The peak and average X-ray yields using a 0.89 W CW Neodymium-doped yttrium lithium fluorides (Nd:YLF) laser light were 234 and 78 MBq, respectively, while those using a 5 W CW fiber laser light were 9.8 and 3.2 times higher than those using a CW Nd:YLF laser light. The miniature X-ray source capsule was designed for mounting on an endoscope.
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