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タンデトロン加速器質量分析計による古い試料の<14>^C年代測定について
https://doi.org/10.18999/sumrua.3.122
https://doi.org/10.18999/sumrua.3.12285b500d4-fe81-454c-a554-66448e960b24
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
KJ00000187540.pdf (431.7 kB)
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| Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||
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| 公開日 | 2010-04-27 | |||||
| タイトル | ||||||
| タイトル | タンデトロン加速器質量分析計による古い試料の<14>^C年代測定について | |||||
| 言語 | ja | |||||
| その他のタイトル | ||||||
| その他のタイトル | A study in <14>^C dating of old samples with a tandetron accelerator mass spectrometer | |||||
| 言語 | en | |||||
| 著者 |
中村, 俊夫
× 中村, 俊夫× Nakamura, Toshio× 中井, 信之× Nakai, Nobuyuki |
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| アクセス権 | ||||||
| アクセス権 | open access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||
| 権利 | ||||||
| 言語 | ja | |||||
| 権利情報 | 名古屋大学年代測定資料研究センター 天然放射性元素測定小委員会 | |||||
| 権利 | ||||||
| 言語 | ja | |||||
| 権利情報 | 本文データは学協会の許諾に基づきCiNiiから複製したものである | |||||
| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | A Tandetron accelerator mass spectrometer (Tandetron AMS), based on mainly a tendem electrostatic accelerator and an apparatus to analyze charge state, energy, mass number, and atomic number of accelerated ions, has been used to measure ^<14>C ages of geological and archeological samples, as well as ^<14>C concentrations of natural samples, since 1983 at Nagoya University. Traditional methods of radioactivity measurement have been applied to determine ^<14>C ages of natural samples by Libby and researchers following him since 1947. However, their applications have been restricted to samples younger than 30,000 to 40,000 y.B.P., as well as ones from which a few grams of carbon can be recovered. Usage of the AMS has overcome these limitations. The amount of carbon necessary for the AMS is 100μg to 5mg, being more than three orders of magnitude less than for traditional measurement. In addition, the oldest age measurable with the AMS has been extended to c.a. 60,000 y.B.P. The ^<14>C background level of the Tandetron AMS at Nagoya University has been estimated by measuring ^<14>C counts for commercial graphite and mineral graphite from an ore deposit in Ceylon, which are too old to contain ^<14>C. The background level corresponds to the apparent age of 66,340 y.B.P. for the former and 64,440 y.B.P. for the latter. The natural wood samples show ^<14>C ages ranging from 59,000 to 67,860 y.B.P. These values are considered to indicate the oldest age measurable at present for natural woody materials. | |||||
| 言語 | en | |||||
| 出版者 | ||||||
| 出版者 | 名古屋大学年代測定資料研究センター 天然放射性元素測定小委員会 | |||||
| 言語 | ja | |||||
| 言語 | ||||||
| 言語 | jpn | |||||
| 資源タイプ | ||||||
| 資源 | http://purl.org/coar/resource_type/c_6501 | |||||
| タイプ | departmental bulletin paper | |||||
| 出版タイプ | ||||||
| 出版タイプ | VoR | |||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
| ID登録 | ||||||
| ID登録 | 10.18999/sumrua.3.122 | |||||
| ID登録タイプ | JaLC | |||||
| 関連情報 | ||||||
| 関連タイプ | isVersionOf | |||||
| 識別子タイプ | URI | |||||
| 関連識別子 | http://ci.nii.ac.jp/naid/110000475805/ | |||||
| 書誌情報 |
ja : 名古屋大学加速器質量分析計業績報告書 巻 3, p. 122-131, 発行日 1992-03 |
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| フォーマット | ||||||
| 値 | application/pdf | |||||
| 著者版フラグ | ||||||
| 値 | publisher | |||||
