2009 Fiscal Year Final Research Report
Improvement of long-lasting emission property of long-lasting phosphors using ion beams
| Project/Area Number |
19760042
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Applied physics, general
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| Research Institution | Japan Atomic Energy Agency |
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Principal Investigator |
TOH Kentaro Japan Atomic Energy Agency, J-PARCセンター, 研究員 (40344717)
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| Project Period (FY) |
2007 – 2009
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| Keywords | 蓄光体 / 残光 / イオンビーム / 加速器 |
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| Research Abstract |
The fluorescence and long-lasting emission properties are examined by irradiating it by some ions to improve its long-lasting property. The spectral shape of long-lasting phosphor has dependencies to the kind of ions and incident energy. Therefore, this material has the potential of being employed to identify the kinds of ion and the incident energy. The radiation damages exhibit incident particle dependence and damages by protons is smallest. Proton is a good candidate for improving the long-lasting property of the materials. By irradiating protons, it was found that the decay time of the long-lasting emission is different for different irradiation fluence, and the time increased with increasing the proton irradiation fluence. Long-lasting emission after the irradiation of protons with fluences of 6.8 × 10^<20> /m^2 is strongest in all conditions.
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