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2002 Fiscal Year Final Research Report Summary

Optical study for the absorbing crystal

Research Project

Project/Area Number 13640484
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Petrology/Mineralogy/Science of ore deposit
Research InstitutionSaitama Institute of Technology (SIT for short)

Principal Investigator

TOKONAMI Masayasu  SIT, Graduate School of Engineering, Professor, 大学院・工学研究科, 教授 (80029850)

Co-Investigator(Kenkyū-buntansha) YOSHIZAWA Masami  SIT, Faculty of Human and Social Studies, Lecturer, 人間社会学部, 講師 (70166932)
Project Period (FY) 2001 – 2002
Keywordsabnormal extinction / elliptically polarized light / amphibole / nepheline syenite / monochromatic light / mercury lamp / polarizing microscope / Pocos de Caldas
Research Abstract

Purpose: Reconfirmation of the research of Tokugoro Shoda which clarified the fact that two sorts of the elliptically polarized light propagate in a crystal is intended.
Specimen: The rock specimen is a hypabyssal rock (Nepheline syenite) from Taquari, Pocos de Caldas, Minas Gerais, Brazil, which is collected at July 26th 1987 in aid of the Science Grant of the Ministry of Education (62041024). It is lent from Geological Museum, Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology. Mineral composition are two sort of amphiboles (Potassic magnesioarfvedsonite and calcic arfvedonite), K-feldspar, Na-feldspar, aegirine, zircon, sphene and pyrite etc. The optical properties of potassic magnesioarfvedsonite is so unique to be elucidated.
Construction of an elliptically polarizing microscope: The main body of the newly constructed microscope is the system polarizing microscope BX-P made by OLYMPUS OPTICAL CO., LTD. A mercury lamp (SHL-100UVQ-2, produced … More by Harison Toshiba Lighting Corp. is used as a light source. A narrow band path filter CJ43177 supplied by Edmund Industrial Optics is inserted in the optical path to select a monochromatic light of the 546nm wave length. Two rotatable quarter wave plates are set; the lower one is between the polarizer and the stage and upper one is between the stage and the analyzer. The direction of the lower quarter wave plate is measured from the direction that the vibrating direction of the faster wave in the plate coincide to the direction of the polarizer.
Construction of analytical system: A Logitec middle tower personal computer LPC-PTIGBS with the software of Image-Pro Plus by Media Cybernetics is introduced to analyze the image of a CCD camera (SONY CCD-IRIS DXC-108).
Observation: One of amphibole crystals shows incomplete extinction under the conventional polarizing microscope. On the case that the lower quarter wave plate is rotated 13 degrees to the anti-clock direction from the zero point and the upper quarter wave plate is hold to the appropriate direction corresponding to the lower, the complete extinction is observed. This means that the elliptically polarized light of the ellipticity of 0.23 can propagate in this crystal.
Result: This observation guarantees the validity of the theory proposed by T. Shoda. Less

  • Research Products

    (10 results)

All Other

All Publications (10 results)

  • [Publications] 床次 正安: "ポッソスデカルダス産霞石閃長岩の記載"埼玉工業大学ハイテクリサーチセンター2001年度研究成果報告書. 12-15 (2002)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 床次 正安: "楕円偏光顕微鏡の制作"埼玉工業大学先端科学研究所マニュアルレポート. 創刊号. 74-77 (2003)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 吉沢 正美: "共鳴動力学回折によるGe K吸収端における異常散乱因子の決定"埼玉工業大学ハイテクリサーチセンター2001年度研究成果報告書. 68-71 (2002)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 吉沢 正美: "Ge K吸収端における異常散乱因子の研究"埼玉工業大学人間社会学部紀要. 第1号. 75-81 (2003)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 庄野 安彦: "入門 結晶化学"内田老鶴圃. 220 (2002)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] M. TOKONAMI, N. AIKAWA, R. NEGISHI, M. YOSHIZAWA: "Description of Nepheline Syenite from Pocos de Caldas, Brazil"Research Report of the Advanced Science Research Laboratory, Saitama Institute of Technology for the fiscal year of 2001. 12-15 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M. TOKONAMI, M. YOSHIZAWA, R. NEGISHI, N. AIKAWA, S. TAKAHASHI: "Construction of an elliptically polarizing microscope"Annual Report of the Advanced Science Research Laboratory, Saitama Institute of Technology for the fiscal year of 2002. 74-77 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M. YOSHIZAWA, S. ZHOU, R. NEGISHI, T. FUKAMACHI, T. KAWAMURA: "Determination of the Anomalous Scattering Factor near GE K-Absorption Edge by Resonant Dynamical Diffraction"Research Report of the Advanced Science Research Laboratory, Saitama Institute of Technology for the fiscal year of 2001. 68-71 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M. YOSHIZAWA, S. ZHOU, R. NEGISHI, I. MATSUMOTO, T. FUKAMACHI, T. KAWAMURA: "Study on the Anomalous Scattering Factor near Ge K-Absorption Edge"Bulletin of the Faculty of Human and Social Studies: Saitama Institute of Technology. Vol. I.1 (Inaugural Number). 75-81 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Y. SYONO, M. TOKONAMI: "Introduction to Crystal Chemistry"Uchida Rokakuho Publishing Co., LTD. 1-212 (2002)

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

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Published: 2004-04-14  

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