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Coherent X radiation from periodic materials

Research Project

Project/Area Number 06452072
Research Category

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

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

Principal Investigator

ENDO Ichita  Hiroshima University, Faculty of Science, Professor, 理学部, 教授 (90033894)

Co-Investigator(Kenkyū-buntansha) NAKAZATO Toshiharu  Tohoku University, Faculty of Science, R.A., 理学部, 助手 (00172289)
TAKAHASHI Tohru  Hiroshima University, Faculty of Science, R.A., 理学部, 助手 (50253050)
HORIGUCHI Takayoshi  Hiroshima University, Faculty of Science, A.P., 理学部, 助教授 (40033899)
Project Period (FY) 1994 – 1995
Project Status Completed (Fiscal Year 1995)
Budget Amount *help
¥6,400,000 (Direct Cost: ¥6,400,000)
Fiscal Year 1995: ¥1,200,000 (Direct Cost: ¥1,200,000)
Fiscal Year 1994: ¥5,200,000 (Direct Cost: ¥5,200,000)
Keywordsparametric x ray / Resonant transition radiation / monochromatic x-ray source
Research Abstract

Various types of coherent x radiations from periaodic materials have benn known ; Parametric X-ray (PXR) , Channeling radiation, Resonant Transition Radiation, and have been studied in the former Soviet Union and other places. The present reasearch project have succeeded in accumulating systematic data which may enable us to understand the heretofore separately described radaiation phenomena in a more consistent way by making measurements under the conditions where two radiation phenomena can take place at the same time. Among the experimental consequences, the following points are to be underlined.
1. The two dimentional angular distribution of PXR was successfully observed for the first time. The results indicated that there is no dip at the central point of the distribution which is expected by our Incoherent Model but that the absolute intensity is appreciably higher than any theoretical calculation.
2. The effect of channeling is small at the electron energies 450 and 200MeV.
3. A rapid increase of x-ray intensity was observed when we increase the number of monocrystalline foils placed in an electron beam. In particular, a quadratic increase was observed for the X rays detected at the Bragg angle by using inclined multi foils.
The last phenomena found here may possibly used for developing an intense monochromaticd x-ray source. Further increase of X-ray intensity is expected for a special arrangement in which the electrons traversescrystalline multifoils many times.

Report

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

    (9 results)

All Other

All Publications (9 results)

  • [Publications] I. Endo: "Parametric X radidation from thick crystals" Physical Review E. 51. 6305-6308 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 遠藤一太: "パラメトリックX線の角度広がりの測定(I)" 核理研研究報告. 27. 106-110 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Y. Takashima: "Measurement of Angular Divergence of Parametric X-ray Radiation" 核理研研究報告. 27. 293-300 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] I.Endo: "Parametric x radiation from thick crystals" Physical Review. E51. 6305-6308 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] I.Endo: "Measurements of Angular Divergence of Parametric X-Ray Radiation (I)" Reserch report of laboratory of nuclear science, Tohoku University. Volume 27, Number 1. 106-110 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Y.Takashima: "Measurements of Angular Divergence of Parametric X-Ray Radiation (II)" Reserch report of laboratory of nuclear science, Tohoku University. Volume 27, Number 2. 293-300 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] T. Endo: "Parametric X radiation from thick crystals" Physical Review E. 51. 6305-6308 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] 遠藤一太: "パラメトリックX線の角度広がりの測定(I)" 核理研研究報告. 27. 106-110 (1994)

    • Related Report
      1995 Annual Research Report
  • [Publications] Y. Takashima: "Measurements of Augular Divergence of Parametric X-ray Radiation(II)" 核理研研究報告. 27. 293-300 (1994)

    • Related Report
      1995 Annual Research Report

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

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