2013 Fiscal Year Final Research Report
Proposal and experiments of non-destructive analytical method for ancient bronze mirrors with mapping of magnetic fields
| Project/Area Number |
24650591
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Single-year Grants |
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| Research Field |
Cultural property science
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| Research Institution | Kanazawa Institute of Technology |
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Principal Investigator |
KAWAI Jun 金沢工業大学, 先端電子技術応用研究所, 教授 (10468978)
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| Project Period (FY) |
2012-04-01 – 2014-03-31
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| Keywords | 青銅鏡 / 文化財 / SQUID / 微弱磁場 / スキャン |
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| Research Abstract |
In this study, we have proposed a new method to detect week magnetic fields due to magnetic impurities such as Fe and Ni in ancient bronze mirrors. We developed a magnetic scanning system in combination with a highly sensitive magnetic measurement system using a superconducting interference device called a SQUID and a XY table. Using the system, we demonstrated scanning of a ancient bronze mirror with 82 mm in diameter and 8 mm in thickness, and we obtained residual magnetic field mapping of about 100 nT at maximum. In this result, we have confirmed that this method is useful as a non-destructive observation for bronze mirrors. We also expect the developed system is promising for evaluation of week residual fields in some other antiquities.
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