2010 Fiscal Year Final Research Report
Development of high demagnification lens system by forming a virtual object
| Project/Area Number |
20560779
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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 |
Nuclear engineering
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| Research Institution | Japan Atomic Energy Agency |
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Principal Investigator |
ISHII Yasuyuki Japan Atomic Energy Agency, 放射線高度利用施設部, 研究副主幹 (00343905)
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| Co-Investigator(Renkei-kenkyūsha) |
OHKUBO Takeru 独立行政法人日本原子力研究開発機構, 放射線高度利用施設部, 研究職 (40446456)
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| Project Period (FY) |
2008 – 2010
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| Keywords | 放射線工学 / ビーム科学 / 集束ガスイオンビーム / 加速レンズ / 高縮小率 |
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| Research Abstract |
Enhancement of the demagnification at an acceleration lens system was studied to generate several tens keV gaseous ion nanobeam using the nano-beam formation apparatus in JAEA. The concept of the enhancement of the demagnification was as follows ; (1) Several hundred eV gaseous ion beam (low energy gaseous beam) with a small imaginary object was generated by a dedicated plasma-type ion source. (2) Its low energy gaseous ion beam was injected into the two-stage acceleration lens system. A direct beam extraction electrode system was installed in the ion source to generate ion beams with the small divergence angle. A minimum hydrogen beam size of 120 nm in diameter with 36 pA at 47 keV was successfully formed by the experiment as the beam trajectory simulation. The focusing lens system with the demagnification over 1700 was composed of combining the plasma-type ion source with the direct extraction electrode and the two-stage acceleration lens system.
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