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《中国物理C》（英文）编辑部
2024年10月30日
Chinese Physics C> 2004, Vol. 28> Issue(11) : 1238-1243 

Bremsstrahlung Characteristics of Thick-Target Applied in High Energy X-Ray Facility

  •  Department of Engineering Physics of Tsinghua University,Beijing 100084,China2 Engineering Physics Institute of China,Mianyang 621900,China

  • Variety of X-ray facilities are widely used in many fields. One of its developing trend is to gain harder and more intense X-rays which are yielded by electron beam with energy above 10MeV and current above kA impacting on thick-target. Dependence of bremsstrahlung characteristics on beam parameters and target thickness are much concerned. The paper studies the selection of the thickness of the target, the bremsstrahlung photons intensity distribution along emergence angle as well as the bremsstrahlung energy spectra. Also, the dependence of X-ray intensity on beam emittance and size of beam-target interaction spot is given. The result reveals at the usual emittance, the decreasing rate of the X-ray intensity with decreasing spot sige is much slowe than that claimed by other references. The consistency between the simulation with experimental results shows that the EGS4 codes can be effectively used in High Energy X-ray facility study.
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    [1] . Koch H W, Motz J W. Rev. Mod. Phys., 195., 31(4): 920—9552. Nelson W R et al . SLAC-265 ,UC-32 (E/I/A., 19853. Lanzl L H., Hanson A O. Phys. Rev., 195., 83(5): 959—9744. Martin T H. A Computerized Method of Predicting Electron BeamBremsstrahlung Radiation with Specfic Application to High Voltage Flash X-Ray Machine., In: SC-RR-69-241., 19695. Berger M J, Seltzer S M. Phys. Rev., 1970, C2(2): 621—6316. O’Dell A A et al. Nucl. Instrum. Method., 1968, 61: 340—3467. LEI J R, CUI G X. Experimental Determination of Brems-pectrum for 12MeV X-Ray Equipmen., In: GF Report: A0045385G, 2001 (in Chinese)(雷家荣, 崔高显. 10—12MeV X 射线装置轫致辐射谱的实验测定,GF 报告: A0045385G, 2001)8. Lawson J D. The Physics of Charged Particle Beams. Charendon: Oxfor., 19779. SHI J J, LI X W, LIU J. High Power Laser and Particle Beam., 1998, 10(1): 108—112(in Chinese)(施将君, 李献文, 刘军. 强激光与粒子束, 1998, 10(1): 108—112)10. SHI J J . High Power Laser and Particle Beam., 1995, 7(4): 613—618(in Chinese)(施将君. 强激光与粒子束, 1995, 7(4) : 613—618)11. Groom D E, Klein S R. European Physical Journal, 2000, C15 (1): 163—17312. Tsai Y S. Rev. Mod. Phys., 1974, 46: 815

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LONG Ji-Dong, SHI Jin-Shui, YU Hai-Jun and LIN Yu-Zheng. Bremsstrahlung Characteristics of Thick-Target Applied in High Energy X-Ray Facility[J]. Chinese Physics C, 2004, 28(11): 1238-1243.
LONG Ji-Dong, SHI Jin-Shui, YU Hai-Jun and LIN Yu-Zheng. Bremsstrahlung Characteristics of Thick-Target Applied in High Energy X-Ray Facility[J]. Chinese Physics C, 2004, 28(11): 1238-1243. shu
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Received: 2004-04-07
Revised: 1900-01-01
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Bremsstrahlung Characteristics of Thick-Target Applied in High Energy X-Ray Facility

    Corresponding author: LONG Ji-Dong,
  • Department of Engineering Physics of Tsinghua University,Beijing 100084,China2 Engineering Physics Institute of China,Mianyang 621900,China
  • Received Date: 2004-04-07
  • Accepted Date: 1900-01-01
  • Available Online: 2004-11-05

Abstract: Variety of X-ray facilities are widely used in many fields. One of its developing trend is to gain harder and more intense X-rays which are yielded by electron beam with energy above 10MeV and current above kA impacting on thick-target. Dependence of bremsstrahlung characteristics on beam parameters and target thickness are much concerned. The paper studies the selection of the thickness of the target, the bremsstrahlung photons intensity distribution along emergence angle as well as the bremsstrahlung energy spectra. Also, the dependence of X-ray intensity on beam emittance and size of beam-target interaction spot is given. The result reveals at the usual emittance, the decreasing rate of the X-ray intensity with decreasing spot sige is much slowe than that claimed by other references. The consistency between the simulation with experimental results shows that the EGS4 codes can be effectively used in High Energy X-ray facility study.

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