中国物理B ›› 1992, Vol. 1 ›› Issue (2): 138-148.doi: 10.1088/1004-423X/1/2/008

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇    

MASS ATTENUATION COEFFICIENTS FOR ELEMENTS MEASURED WITH CHARACTERISTIC X-RAYS FROM TARGETS EXCITED BY ENERGETIC PROTON

王大椿, 丁训良, 杨华, 罗平安   

  1. Institute of Low Energy Nuclear Physics, Beijing Normal University, Beijing 100875, China
  • 收稿日期:1991-09-23 修回日期:1992-04-01 出版日期:1992-02-20 发布日期:1992-02-20
  • 基金资助:
    Project supported by the International Atomic Energy Agency(IAEA).

MASS ATTENUATION COEFFICIENTS FOR ELEMENTS MEASURED WITH CHARACTERISTIC X-RAYS FROM TARGETS EXCITED BY ENERGETIC PROTON

WANG DA-CHUN (王大椿), DING XUN-LIANG (丁训良), YANG HUA (杨华), LUO PING-AN (罗平安)   

  1. Institute of Low Energy Nuclear Physics, Beijing Normal University, Beijing 100875, China
  • Received:1991-09-23 Revised:1992-04-01 Online:1992-02-20 Published:1992-02-20
  • Supported by:
    Project supported by the International Atomic Energy Agency(IAEA).

PDF (PC)

419

赞

摘要： The characteristic X-rays from elemental or compound targets excited by energetic proton are quasi-monochromatic X-ray sources. The advantages of high line/ background ratio, controllable intensity as well as many available energies, make them suitable for applications in many important fields. The total mass attenuation cross sections of yttrium have been systematically measured by using this kind of X-ray source. The accuracy of experimental data has been improved to ±1%, which is much better than that of earlier results. The contributions of the coherent and incoherent scattering crees sections have been calcu-lated in accordance with the present experimental condition. And the total photoelectric cross sections have been obtained by subtracting the scattering cross section from the measured total cross sections. The com-parisons of our experimental results with the available data of earlier investigations as well as with the theo-retical calculations have been presented and discussed.

Abstract: The characteristic X-rays from elemental or compound targets excited by energetic proton are quasi-monochromatic X-ray sources. The advantages of high line/ background ratio, controllable intensity as well as many available energies, make them suitable for applications in many important fields. The total mass attenuation cross sections of yttrium have been systematically measured by using this kind of X-ray source. The accuracy of experimental data has been improved to ±1%, which is much better than that of earlier results. The contributions of the coherent and incoherent scattering crees sections have been calcu-lated in accordance with the present experimental condition. And the total photoelectric cross sections have been obtained by subtracting the scattering cross section from the measured total cross sections. The com-parisons of our experimental results with the available data of earlier investigations as well as with the theo-retical calculations have been presented and discussed.

中图分类号:  (Adsorption kinetics ?)

  • 68.43.Mn
78.30.Jw (Organic compounds, polymers) 68.47.De (Metallic surfaces)