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Energy Loss of Fast Oxygen Ions in Metal Foils : Emergence Angle and Change State Dependence

Research Project

Project/Area Number 03640352
Research Category

Grant-in-Aid for General Scientific Research (C)

Allocation TypeSingle-year Grants
Research Field 物理学一般
Research InstitutionNara Women's University

Principal Investigator

SAKAMOTO Naoki  Nara Women's University, Deptment of Physics, Associate Professor, 理学部, 助教授 (20031718)

Co-Investigator(Kenkyū-buntansha) 小川 英巳  奈良女子大学, 理学部, 助教授 (90169194)
SHIOMI-TSUDA Naoko  Nara Women's University, Deptment of Physics, Associate Professor, 理学部, 教授 (40031679)
Project Period (FY) 1991 – 1993
Project Status Completed (Fiscal Year 1993)
Budget Amount *help
¥2,000,000 (Direct Cost: ¥2,000,000)
Fiscal Year 1993: ¥300,000 (Direct Cost: ¥300,000)
Fiscal Year 1992: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 1991: ¥1,000,000 (Direct Cost: ¥1,000,000)
KeywordsEnergy Loss / Oxygen Ion / Emergency Angle Dependence / Charge State Dependence / Charge Fraction / エネルギ-損失
Research Abstract

The purpose of this research project is to investigate the dependence of energy loss of fast oxygen ions which transmitted thin metal foils on their emerging angles and charge states. We are also interested in the relation between charge state fraction adn emerging angle. We measured the angle-dependent energy loss of oxygen ions which have various change states by using Au foils in the term 1991 and 1992. The dependence of charge state fractions of oxygen ions on emerging angles was investigated with 1 to 50 mug/cm^2 carbon foils in the term 1992 and 1993.
The charge states of emerging oxygen ions were vertically separated with magnetic field and detected by an position sensitive detector (PSD). Moving the PSD holizontally, we coud measure the angle-dependent energy loss of oxygen ions. As for the Au foil, the energy loss of oxygen ions was found to increase with increasing emerging angles. The amount of the increase was as large as that observed for protons in an Au foil. The charge state fraction was found to be almost independent of emerging angles. It was not confirmed that the energyloss of ions depended upon the charge state of emerging ions. These results were considered to be due to the thickness of the target foil.
In order to investigate the dependence of the charge state fraction on emergence angles, we measured the angle-dependent charge fraction of oxygen ions for thin carbon foils. In the case of carbon foils for which the charge state nonequilibrium was observed, the charge fraction of emerging ions was found to depend strongly on emergence angles. Moreover, even for the thickness where charge state equilibrium was already attained we observed that charge fraction varied with increasing emerging angles. These measurements are expected to bring about the knowledge on the differential cross sections of charge changing reactions.

Report

(4 results)
  • 1993 Annual Research Report   Final Research Report Summary
  • 1992 Annual Research Report
  • 1991 Annual Research Report
  • Research Products

    (18 results)

All Other

All Publications (18 results)

  • [Publications] N.Sakamoto: "Geometrical Effect on the Measurement of Stopping Powers:Angle-Dependent Energy Loss of 5 MeV Protons in Cu" Nucl.Instr.Meth.B69. 84-88 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] N.Sakamoto: "Stopping Powers of Metallic Elements for High Energy Ions" Radiat.Eff.Defects Solids. 117. 193-195 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] N.Shiomi-Tsuda: "Stopping Powers of Al,Ti,Cu,Zr,Rh,Ag,Ta and Au for 26 MeV Alpha Particles and Z^3_1 Correction" Radiat.Eff.Defects Solids. 117. 185-192 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] 藤本文範他: "イオンビーム工学入門" 内田老鶴圃(出版予定), (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] N.Sakamoto, H.Ogawa, N.Shiomi-Tsuda and R.Ishiwari: "Geometrical Effect on the Measurement of Stoping Powers : Angle-Dependent Energy Loss of 5 MeV Protons in Cu" Nucl. Instr. Mech.B69. 84-88 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] N.Sakamoto, H.Ogawa, M.Mannami, K.Kimura, Y.Susuki, M.Hasegawa, I.Katayama, T.Noro and H.Ikegami: "Stopping Powers of Metallic Elements for High Energy Ions" Radiat. Eff. Defects Solids. 117. 193-195 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] N.Shiomi-Tsuda, N.Sakamoto, H.Ogawa and R.Ishiwari: "Stopping Powers of Al, Ti, Cu, Zr, Rh, Ag, Ta and Au for 26 MeV Alpha Particles and Z^3_ Correction" Radiat. Eff. Defects Solids. 117. 185-192 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] F.Fujimoto et al.: Introduction to Ion Beam Technology (in Japanese). Uchida Roukakuho, (in press),

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] N.Sakamoto: "Geometrical Effect on the Measurement of Stopping Powers:Angle-Dependent Energy Loss of 5 MeV Protons in Cu" Nucl.Instr.Meth.B69. 84-88 (1992)

    • Related Report
      1993 Annual Research Report
  • [Publications] N.Sakamoto: "Stopping Powers of Metallic Elements for High Energy Ions" Radiat.Eff.Def.Solids. 117. 193-195 (1991)

    • Related Report
      1993 Annual Research Report
  • [Publications] N.Shiomi-Tsuda: "Stopping Powers of Al,Ti,Cu,Zr,Rh,Ag,Ta and Au for 26 MeV Alpha Particles and Z^3_1 Correction" Radiat.Eff.Def.Solids. 117. 185-192 (1991)

    • Related Report
      1993 Annual Research Report
  • [Publications] 藤本文 範他: "イオンビーム工学入門" 内田老鶴圃 (出版予定), (1994)

    • Related Report
      1993 Annual Research Report
  • [Publications] N.Sakamoto: "Geometrical Effect on the Measurement of Stopping Powers: Angle-Dependent Energy Loss of 5 MeV Protons in Cu" Nucl.Instr.Meth.B69. 84-88 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] N.Sakamoto: "Stopping Powers of Metallic Elements for High Energy Ions" Radiat.Eff.Def.Solids. 117. 193-195 (1991)

    • Related Report
      1992 Annual Research Report
  • [Publications] N.Shiomi-Tsuda: "Stopping Powers of Al,Ti,Cu,Zr,Rh,Ag,Ta and Au for 26 MeV Alpha Particles and Z^3_1 Correction" Radiat.Eff.Def.Solids. 117. 185-192 (1991)

    • Related Report
      1992 Annual Research Report
  • [Publications] N.Sakamoto: "Geometrical Effect on the Measurement of Stopping Powers:AngleーDependent Energy Loss of 5 MeV Protons in Cu" Nucl.Instr.Meth.(1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] N.Sakamoto: "Stopping Powers of Metallic Elements for High Energy Ions" Radiat.Eff.Solids. 117. 193-195 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] N.ShiomiーTsuda: "Stopping Powers of Al,Ti,Cu,Zr,Ag,Ta and Au for 26 MeV Alpha Particles and Z^3_1 Correction" Radiat.Eff.Def.Solids. 117. 185-192 (1991)

    • Related Report
      1991 Annual Research Report

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Published: 1991-04-01   Modified: 2016-04-21  

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