Development of ultrasensitive accelerator mass spectrometry for C-14 in quartz
Project/Area Number |
16K16347
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Research Category |
Grant-in-Aid for Young Scientists (B)
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Allocation Type | Multi-year Fund |
Research Field |
Geography
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Research Institution | Kanazawa University (2017-2018) University of Tsukuba (2016) |
Principal Investigator |
Matsunaka Tetsuya 金沢大学, 環日本海域環境研究センター, 助教 (60731966)
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Research Collaborator |
SASA Kimikazu
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Project Period (FY) |
2016-04-01 – 2019-03-31
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Project Status |
Completed (Fiscal Year 2018)
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Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2018: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2017: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2016: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
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Keywords | 炭素14 / ガス/固体ハイブリット型イオン源 / 加速器質量分析 / 氷河地形編年 / 宇宙線生成核種 / 石英 / 表面露出年代 |
Outline of Final Research Achievements |
The first test of the 14C-accelerator mass spectrometry (AMS) system was successfully performed using a gas/solid hybrid ion source and an automated sample preparation system with an elemental analyzer (EA). The maximum 12C current of 11 µA was achieved using the optimized CO2 flow rate to the hybrid ion source. The machine background of 14C/12C for the AMS system reached to 2.4 × 10^-16 (0.02 percent modern carbon, pMC) using unprocessed mineral graphite. The blank level of 14C/12C including the combustion process for an IAEA-C1 graphite sample was 4.6 × 10^-16 (0.05 pMC), demonstrating the low blank level of the automatic sample preparation system. In contrast, the blank level of 14C/12C including the combustion process for an IAEA-C1 CO2 sample was 5.0 × 10^-15 (0.49 pMC), an order of magnitude worse than that for the graphite sample. The measurement uncertainty for the gas ion source was 0.6%, 2 times worse than that for the solid ion source (0.3%).
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Academic Significance and Societal Importance of the Research Achievements |
ガスイオン源を用いて、少なくとも0.5-1.0ミリグラムのCO2ガス試料について、グラファイト化処理を施す必要の無い、高感度で迅速な14C測定に成功した。前処理を含めて2日間で10試料の14C測定が可能であり、迅速性の観点から意義があるだけでなく、CO2として導入できる他の分析装置(元素分析計、レーザーアブレーション、ガスクロマトグラフ)とAMSを連結する応用研究が今後期待できる。
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Report
(4 results)
Research Products
(47 results)
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[Journal Article] Radiocarbon variations in tree rings since 1960 near the Tokai nuclear facility, Japan2019
Author(s)
Matsunaka, T., Sasa, K., Takahashi, T., Hosoya, S., Matsumura, M., Satou, Y., Shen, H., Sueki, K.
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Journal Title
Nuclear Instruments and Methods in Physics Research Section B
Volume: 439
Pages: 64-69
DOI
Related Report
Peer Reviewed / Int'l Joint Research
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[Journal Article] Radiocarbon measurement using a gas/solid hybrid ion source and an automated sample preparation system at the University of Tsukuba2019
Author(s)
Matsunaka, T., Sasa, K., Hosoya, S., Shen, H., Takahashi, T., Matsumura, M., Sueki, K.
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Journal Title
Nuclear Instruments and Methods in Physics Research Section B
Volume: 印刷中
Pages: 204-208
DOI
Related Report
Peer Reviewed / Int'l Joint Research
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[Journal Article] Isobar suppression for 36Cl accelerator mass spectrometry at the University of Tsukuba2019
Author(s)
Hosoya, S., Sasa, K., Takahashi, T., Matsunaka, T., Matsumura, M., Shen, H., Ota, Y., Takano, K., Ochiai, Y., Sueki, K.
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Journal Title
Nuclear Instruments and Methods in Physics Research Section B
Volume: 438
Pages: 131-135
DOI
Related Report
Peer Reviewed / Int'l Joint Research
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[Journal Article] The 6 MV multi-nuclide AMS system at the University of Tsukuba: First performance report2018
Author(s)
Sasa, K., Takahashi, T., Matsunaka, T., Hosoya, S., Matsumura, M., Shen, H., Honda, M., Takano, K., Ochiai, Y., Sakaguchi, A., Sueki, K., Stodola, M., Sundquist, M.
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Journal Title
Nuclear Instruments and Methods in Physics Research Section B
Volume: 437
Pages: 98-102
DOI
Related Report
Peer Reviewed / Int'l Joint Research
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[Journal Article] Operational status of the Tsukuba 6 MV multi-nuclide AMS system in fiscal 20172018
Author(s)
Sasa, K., Takahashi, T., Matsunaka, T., Hosoya, S., Honda, M., Ota, Y., Takano, K., Ochiai, Y., Matsumura, M., Sueki, K.
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Journal Title
UTTAC ANNUAL REPORT 2017
Volume: -
Pages: 13-14
Related Report
Open Access
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[Journal Article] Optimization of a ΔE-E detector for 41Ca AMS using PHITS code simulation2017
Author(s)
Hosoya, S., Sasa, K., Matsunaka, T., Takahashi, T., Matsumura, M., Matsumura, H., Sundquist, M., Stadola, M., Sueki, K.
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Journal Title
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
Volume: 406
Pages: 268-271
DOI
Related Report
Peer Reviewed / Int'l Joint Research
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[Journal Article] Variability of the 14C reservoir effects in Lake Tangra Yumco, Central Tibet (China), determined from recent sedimentation rates and dating of plant fossils2017
Author(s)
Wang, J.B., Zhu, L.P., Wang, Y., Peng, P., Ma, Q.F., Haberzettl, T., Kasper, T., Matsunaka, T., Nakamura, T.
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Journal Title
Quaternary International
Volume: 430
Pages: 3-11
DOI
Related Report
Peer Reviewed / Int'l Joint Research
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[Journal Article] Operation of the Tsukuba 6 MV multi-nuclide AMS system for the year 20162017
Author(s)
Sasa, K., Takahashi, T., Matsunaka, T., Hosoya, S., Matsumura, M., Shen, H., Honda, M., Ota, Y., Matsuo, K., Sakaguchi, A., Sueki, K.
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Journal Title
UTTAC ANNUAL REPORT 2016
Volume: -
Pages: 16-17
Related Report
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[Journal Article] 36Cl AMS measurements with the 6 MV tandem accelerator2017
Author(s)
Hosoya, S., Sasa, K., Takahashi, T., Matsunaka, T., Matsumura, M., Shen, H., Sueki, K.
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Journal Title
UTTAC ANNUAL REPORT 2016
Volume: -
Pages: 18-19
Related Report
Int'l Joint Research
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[Journal Article] Detection tests of rare particles by the 6 MV tandem accelerator mass spectrometry system2016
Author(s)
Sasa, K., Takahashi, T., Matsunaka, T., Matsumura, M., Hosoya, S., Sueki, K., Stodola, M., Sundquist, M.
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Journal Title
UTTAC ANNUAL REPORT 2015
Volume: -
Pages: 15-16
Related Report
Open Access
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[Journal Article] Application of the PHITS code simulation for hard-to-measure nuclides of AMS2016
Author(s)
Hosoya, S., Sasa, K., Matsunaka, T., Matsumura, M., Takahashi, T., Sundquist, M., Stodola, M., Sueki, K.
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Journal Title
UTTAC ANNUAL REPORT 2015
Volume: -
Pages: 17-18
Related Report
Open Access
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[Presentation] 筑波大学6 MVタンデム加速器質量分析装置における多核種AMSの技術開発2018
Author(s)
笹公和, 高橋努, 松村万寿美, 高野健太, 落合悠太, 太田祐貴, 細谷青児, 本多真紀, 松中哲也, 坂口綾, 末木啓介
Organizer
第21回AMSシンポジウム
Related Report
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[Presentation] Study on radiocarbon Dating of Chinese Ancient Tea Trees2018
Author(s)
Shen, H., Chen, J., Sasa, K., Matsunaka, T., Hosoya, S., Matsumura, M., Takahashi, T., Sueki, K., He, M., Zhao, Q., Qin, X., Chen, X., Jiang, S.
Organizer
The 23rd International Radiocarbon Conference
Related Report
Int'l Joint Research
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[Presentation] Rapid C-14 measurement system at the University of Tsukuba and application for nuclear safety2017
Author(s)
Matsunaka, T., Sasa, K., Hosoya, S., Shen, H., Takahashi, T., Matsumura, M., Sueki, K., Satou, Y.
Organizer
The 7th East Asia Accelerator Mass Spectrometry Symposium
Related Report
Int'l Joint Research / Invited
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[Presentation] Progress in Multi-nuclide AMS Techniques for the 6 MV AMS System at the University of Tsukuba2017
Author(s)
Sasa, K., Takahashi, T., Hosoya, S., Takano, K., Ochiai, Y., Honda, M., Ohta, Y., Sakaguchi, A., Masunaka, T., Shen, H., Sueki, K.
Organizer
The 7th East Asia Accelerator Mass Spectrometry Symposium
Related Report
Int'l Joint Research / Invited
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[Presentation] Performance of the 6MV multi-nuclide AMS system at the University of Tsukuba2017
Author(s)
Sasa, K., Takahashi, T., Matsunaka, T., Hosoya, S., Matsumura, M., Honda, M., Shen, H., Sakaguchi, A., Sueki, K., Stodola, M., Sundquist, M.
Organizer
The Fourteenth International AMS Conference
Related Report
Int'l Joint Research
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[Presentation] Radiocarbon measurement system using gas ion source and automatic sample preparation system at the University of Tsukuba2017
Author(s)
Matsunaka, T., Sasa, K., Hosoya, S., Shen, H., Takahashi, T., Matsumura, M., Sueki, K.
Organizer
The Fourteenth International AMS Conference
Related Report
Int'l Joint Research
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[Presentation] Study on Multiple radionuclides for Exposure Age Dating of Chinese Tiankeng2017
Author(s)
Shen, H., Sasa, K., He, M., Huang, B. Matsumura, M., Hosoya, S., Matsunaka, T., Takahashi, T., Honda, M., Sueki, K., Zhao, Q., Meng, Q., Dong, K., Wang, X., Pang, Y., Yang, X., Ruan, X., Jiang, S.
Organizer
The Fourteenth International AMS Conference
Related Report
Int'l Joint Research
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[Presentation] TianKeng Sample Preparation for 36Cl-AMS2017
Author(s)
Meng, Q., Shen, H., He, M. Sasa, K. Prof. Baojian, H., Matsumura, M., Matsunaka, T., Zhao, Q. Dong, K., Wang, X., Pang, Y., Yang, X., Xiangdong, R., Jiang, S.
Organizer
The Fourteenth International AMS Conference
Related Report
Int'l Joint Research
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[Presentation] Isobar separation techniques of 41Ca AMS with the 6 MV tandem accelerator2017
Author(s)
Sasa, K., Hosoya, S., Matsunaka, T., Takahashi, T., Matsumura, M., Shen, H., Oura, Y., Sueki, K.
Organizer
The Fourteenth International AMS Conference
Related Report
Int'l Joint Research
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[Presentation] Isobar suppression for 36Cl-AMS with the 6 MV tandem accelerator2017
Author(s)
Hosoya, S., Sasa, K., Takahashi, T., Matsunaka, T., Matsumura, M., Shen, H., Sueki, K.
Organizer
The Fourteenth International AMS Conference
Related Report
Int'l Joint Research
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[Presentation] 6 MVタンデム加速器質量分析装置を用いた長半減期放射性核種の超高感度検出2017
Author(s)
笹公和, 高橋努, 細谷青児, 高野健太, 落合悠太, 本多真紀, 太田祐貴, 松尾一樹, 松中哲也, 坂口綾, 末木啓介
Organizer
2017年放射化学会年会・第61回放射化学討論会
Related Report
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