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2000 Fiscal Year Final Research Report Summary

Developments of non-destructive quantification for trace elements in high-pressure run-products by proton beam

Research Project

Project/Area Number 09554027
Research Category

Grant-in-Aid for Scientific Research (B).

Allocation TypeSingle-year Grants
Section展開研究
Research Field Petrology/Mineralogy/Science of ore deposit
Research InstitutionUNIVERSITY OF TSUKUBA

Principal Investigator

KATO Takumi  Institute of Geoscience, UNIVERSITY OF TSUKUBA Associate Professor, 地球科学系, 助教授 (90214379)

Co-Investigator(Kenkyū-buntansha) KUROSAWA Masanori  Institute of Geoscience, UNIVERSITY OF TSUKUBA Lecturer, 地球科学系, 講師 (50272141)
Project Period (FY) 1997 – 2000
KeywordsTrace element analysis / Microbeam analysis / PIXE / Proton beam / Fluid inclusion / Pegmatite / X-ray analysis / High pressure experiment
Research Abstract

This project aims to study and develop non-destructive quantitative analytical method of trace elements in high-pressure run-products by PIXE (proton-induced X-ray emission) method. We have developed : 1) a micro-proton beam line for high-pressure product analyses and sample chamber for microanalyses equipped with microscope, micro-driving stage, and two solid state detectors for light and heavy element analyses ; 2) analytical procedures for high-pressure run-products ; 3) quantification of trace elements in single fluid inclusions buried in mineral matrix. A 4 MeV proton micro-beam of 2 nA, 50 μm in size was obtained in the developed beam line by a new quadropole magnet. By using PIXE at the new beam line, high-pressure run-product, graphite-diamond mixtures and basaltic glasses maintained at 2000 C and 7.7 GPa, was analyzed. The graphite contained almost the elements derived from basaltic glass as interlayer impurities, indicating concentration of many elements in graphite under the high-pressure condition. Natural diamonds include usually graphite, so that analyses of the graphite can provide a chemical information of diamond-growth. In addition, trace elements ranged from 10 to 1000 μg/g in single fluid inclusions were determined with ±15 % relative precision by using the developed quantification. At the present measurements, a few μg/g elements were detected in the fluid inclusion with 200 μm in diameter, corresponding to several-picograms (〜10^<-12> g) detection of elements in inclusions.

  • Research Products

    (18 results)

All Other

All Publications (18 results)

  • [Publications] 加藤工,寺崎英紀,久保友明: "放射光X線高圧実験システムの応用、地球物質の輸送過程-地球内部科学の新展開"地学雑誌. 109. 868-873 (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] T.Kubo,E.Ohtani,T.Kato,S.Urakawa,A.Suzuki,Y.Kanbe,and K.Fujino: "Formation of metastable assemblages and mechanism of the grain-size reduction in the postspinel transformation of Mg2SiO4"Geophysical Research Letters. 27. 807-810 (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] M.Kurosawa,S.Shimano,T.Namajima,T.Kato: "Development of quantitative analysis of individual fluid inclusions using proton-induced X-ray emission"Ann Report Tandem Accelerator Center Univ. Tsukuba. 68. 94-99 (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] M.Kurosawa,S.Sueno,K.Shima,H.Ohshima,S.Ishii,H.Kamiya,S.Kimoto,H.Ohyi,and K.Hayashi: "Development of a new sample chamber for proton microprobe analysis of mineral samples,."Nuclear Instruments and Methods in Physical Research B. 142. 599-605 (1998)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] M.Kurosawa,J.L.Campbell,W.J.Teesdale,H.Ohyi,Y.Deguchi,and S.Murao: "Quantitative trace element analyses of silicate reference materials and a stainless steel using the proton microprobe"Chemical Geology. 160. 241-250 (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] M.Kurosawa,S.Sueno,T.Kato,H.Ohshima,and S.Ishii: "(1998) Trace element analysis of mineral samples using PIXE, Ann. Report Tandem Accelerator Center, Univ. Tsukuba"Ann.Rept.Tandem Accelerator Center Univ Tsukuba,. 66. 94-96 (1998)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] M.Kurosawa, S.Sueno, K.Shima, H.Ohshima, S.Ishii, H.Kamiya, S.Kimoto, H.Ohyi, and K.Hayashi: "Development of a new sample chamber for proton microprobe analysis of mineral samples"Nuclear Instruments and Methods in Physical Research B. 142. 599-605 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M.Kurosawa, J.L.Campbell, W.J.Teesdale, H.Ohyi, Y.Deguchi, and S.Murao: "Quantitative trace element analyses of silicate reference materials and a stainless steel using the proton microprobe"Chemical Geology. 160. 241-250 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M.Kurosawa, S.Sueno, T.Kato, H.Ohshima, and S.Ishii: "Trace element analysis of mineral samples using PIXE"Ann.Report Tandem Accelerator Center, Univ.Tsukuba. 66. 94-96 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M.Kurosawa, S.Shimano, T.Kato, S.Sueno, K.Shima, S.Ishii, and H.Ohshima: "Quantitative trace element analysis of single fluid inclusion using the PIXE"Ann.Rept.Tandem Accelerator Center Univ Tsukuba. 67. 112-117 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M.Kurosawa, S.Shimano, T.Namajima, T.Kato et al.: "Development of quantitative analysis of individual fluid inclusions using proton-induced X-ray emission"Ann Report Tandem Accelerator Center Univ.Tsukuba. 68. 94-99 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] T.Kato, N.Nakata, E.Ohtani, and K.Onuma: "Melting experiments on the forsterite-pyrope system at 8 and 13.5 GPa"Physics of the Earth and Planetary Interiors. 107. 97-102 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] T.Kato, T.Kubo, H.Morishima, E.Ohtani, A.Suzuki, D.Yamazaki, K.Mibe, T.Kikegawa, and O.Shimomura: "In situ X ray observation of the phase transitions from α to γ and γ to perovskite+periclase in Mg_2SiO_4"Rev.High Pressure Sci.Technol.. 7. 119-121 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] T.Kubo, E.Ohtani, T.Kato, H.Morishima, D.Yamazaki, A.Suzuki, K.Mibe, T.Kikegawa, and O.Shimomura: "An in Situ X-ray diffraction study of the α-β transformation kinetics of Mg_2SiO_4"Geophysical Research Letters. 25. 695-698 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] T.Kubo, E.Ohtani, T.Kato, T.Shinmei, and K.Fujino: "Experimental investigation of the the α-β transformation of San Carlos olivine single crystal"Physics and Chemistry of Minerals. 26. 1-6 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] T.Kubo, E.Ohtani, T.Kato, T.Shinmei, and K.Fujino: "Effect of water on the α-β transformation kinetics in San Carlos Olivine"Science. 281. 85-87 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] D.Yamazaki, T.Kato, H.Yurimoto, E.Ohtani, and M.Toriumi: "Silicon self-diffusion in MgSiO_3 perovskite at 25 GPa"Physics of the Earth and Planetary Interiors. 119. 299-309 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] T.Kubo, E.Ohtani, T.Kato, S.Urakawa, A.Suzuki, Y.Kanbe, K.Funakoshi, W.Utsumi, and K.Fujino: "Formation of metastable assemblages and mechanism of the grain-size reduction in the postspinel transformation of Mg_2SiO_4"Geophysical Research Letters. 27. 807-810 (2000)

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 2002-03-26  

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