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Study on the energy-loss mechanism of fast neutral particles at crystal surfaces

Research Project

Project/Area Number 06452070
Research Category

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

Allocation TypeSingle-year Grants
Research Field 物理学一般
Research InstitutionKYOTO UNIVERSITY

Principal Investigator

MANNAMI Michihiko  Kyoto University, Graduate School of Engineering, Professor, 工学研究科, 教授 (60025294)

Co-Investigator(Kenkyū-buntansha) SUSUKI Yasufumi  Kyoto University, Graduate School of Engineering, Instructor, 工学研究科, 助手 (00196784)
KIMURA Kenji  Kyoto University, Graduate School of Engineering, Associate Professor, 工学研究科, 助教授 (50127073)
Project Period (FY) 1994 – 1995
Project Status Completed (Fiscal Year 1995)
Budget Amount *help
¥7,100,000 (Direct Cost: ¥7,100,000)
Fiscal Year 1995: ¥900,000 (Direct Cost: ¥900,000)
Fiscal Year 1994: ¥6,200,000 (Direct Cost: ¥6,200,000)
KeywordsFast neutral particle / Time of flight / Surface scattering / Energy loss / Electron density
Research Abstract

A time of flight (TOF) system was developed to measure energy of fast neutral particles. Using this TOF system, energy losses of reflected particles, both ions and neutral atoms, were measured at glancing angle incidence of 12 - 30 keV rare gas ions on the (001) surface of SnTe single crystal. The observed neutral fractions were larger than 96% and the observed energy losses of the reflected ions were almost equal to those of the neutral particles. These experimental results indicate that almost all incident ions were neutralized at the surface. The position dependent stopping powers for neutral rare gas atoms were derived from the observed incident-angle dependence of the energy loss. The obtained stopping power was successfully explained in terms of single collisions of neutral atom with valence electrons permeated outside the surface. A new method to determine the electron ditsribution outside a crystal surface was proposed.

Report

(3 results)
  • 1995 Annual Research Report   Final Research Report Summary
  • 1994 Annual Research Report
  • Research Products

    (14 results)

All Other

All Publications (14 results)

  • [Publications] Y.Susuki: "Dissociative scattering of fast HeH^+ ions at glancing-angle incidence on a crystal surface" Physical Review A. 51. 528-534 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] M. Mannami: "Charge-state dependence of energy losses of 3.2 MeV Li ions specularly reflected from surface of single crystal" Nucl. Instr. and Meth. in Phys. Res.B100. 1-9 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Kenji Kimura: "Energy loss straggling of 0.5-MeV protons specularly reflected from a SnTe(001) surface" Nucl. Instr. and Meth. in Phys. Res.B100. 356-360 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] M. Mannami: "Position-dependent stopping of 12.5-30keV He^+ ions at crystal surface" Nucl. Instr. and Meth. in Phys. Res.(印刷中).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Y.Susuki: "Dissociative scattering of fast HeH^+ ions at glancing-anle incidence on a crystal surface" Physical Review A. Vol.51. 528-534 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] M.Mannami: "Charge-state dependence of energy losses of 3.2 MeV Li ions specularly reflected from surface of single crystal" Nucl.Instr.and Meth.in Phys.Res.Vol.B 100. 1-9 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Kenji Kimura: "Energy loss straggling of 0.5-MeV protons specularly reflected from a SnTe (001) surface" Nucl.Instr.and Meth.in Phys.Res.Vol.B 100. 356-360 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] M.Mannami: "Position-dependent stopping of 12.5 - 30 keV He^+ ions at crystal surface" Nucl.Instr.and Meth.in Phys.Res.(in printing).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] M. Mannami: "Charge-state dependence of energy losses of 3. 2 MeV Li ions specularly reflected from surface of single crystal" Nucl. Instr. and Meth. in Phys. Res.B100. 1-9 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] Kenji Kimura: "Energy loss straggling of 0. 5-MeV protons specularly reflected from a SnTe(001)surtace" Nucl. Instr. and Meth. in Phys. Res.B100. 356-360 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] M.Mannami: "Position-dependent stopping of 12. 5-30keV He^+ ions at crystal surface" Nucl. Instr. and Meth. in Phys. Res.(印刷中).

    • Related Report
      1995 Annual Research Report
  • [Publications] Y.Susuki: "Dissociative scattering of fast HeH^+ ions at glancing-angle incidence on a crystal surface" Physical Review A. 51. 528-534 (1995)

    • Related Report
      1994 Annual Research Report
  • [Publications] M.Mannami: "Charge-state dependence of energy losses of 3.2MeV Liions specularly reflected from surface of single crystal" Nuclear Instruments and Methods. (印刷中).

    • Related Report
      1994 Annual Research Report
  • [Publications] Kenji Kimura: "Energy loss straggling of 0.5-MeV protons specularly reflected from a SnTe(001)surface" Nuclear Instruments and Methods. (印刷中).

    • Related Report
      1994 Annual Research Report

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Published: 1994-04-01   Modified: 2016-04-21  

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