Quasi-Monochromatic Flash X-Ray Generator Utilizing Disk-Cathode Molybdenum Tube

• Sato Eiichi

  Department of Physics, Iwate Medical University

• Sagae Michiaki

  Department of Physics, Iwate Medical University

• Tanaka Etsuro

  Department of Nutritional Science, Faculty of Applied Bio-science, Tokyo University of Agriculture

• Hayasi Yasuomi

  Department of Physics, Iwate Medical University

• Germer Rudolf

  ITP, FHTW FB1 and TU-Berlin

• Mori Hidezo

  Department of Cardiac Physiology, National Cardiovascular Center Research Institute

• Kawai Toshiaki

  Electron Tube Division #2, Hamamatsu Photonics Inc.

• Ichimaru Toshio

  Department of Radiological Technology, School of Health Sciences, Hirosaki University

• Sato Shigehiro

  Department of Microbiology, School of Medicine, Iwate Medical University

• Takayama Kazuyoshi

  Shock Wave Research Center, Institute of Fluid Science, Tohoku University

• Ido Hideaki

  Department of Applied Physics and Informatics, Faculty of Engineering, Tohoku Gakuin University

抄録

High-voltage condensers in a polarity-inversion two-stage Marx surge generator are charged from −40 to −60 kV using a power supply, and the electric charges in the condensers are discharged to an X-ray tube after closing the gap switches in the surge generator using a trigger device. The X-ray tube is a demountable diode, and the turbomolecular pump evacuates air from the tube with a pressure of approximately 1 mPa. Sharp K-series characteristic X-rays of molybdenum are produced without using a monochromatic filter, since the tube utilizes a disk cathode and a rod target, and bremsstrahlung rays are not emitted in the opposite direction to that of electron acceleration. The peak tube voltage increased with increasing charging voltage and increasing space between the target and cathode electrodes. At a charging voltage of −60 kV and a target-cathode space of 1.0 mm, the peak tube voltage and current were 110 kV and 0.75 kA, respectively. The pulse width ranged from 40 to 100 ns, and the maximum dimension of the X-ray source was 3.0 mm in diameter. The number of generator-produced K photons was approximately 7×10¹⁴ photons/cm²·s at 0.5 m from the source.

収録刊行物

• Japanese Journal of Applied Physics

  Japanese Journal of Applied Physics 43 (10), 7324-7328, 2004

  The Japan Society of Applied Physics

キーワード

• flash X-ray
• characteristic X-ray
• quasi-monochromatic radiography
• bremsstrahlung X-ray distribution

詳細情報

• CRID: 1390001206263635456
• NII論文ID: 10013746362
• NII論文ID: 130004531483
• NII論文ID: 210000056604
• NII書誌ID: AA10457675
• DOI: 10.1143/jjap.43.7324
• ISSN: 13474065
• ISSN: 00214922
• NDL書誌ID: 7125042
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I7125042
• Web Site: http://stacks.iop.org/1347-4065/43/i=10R/a=7324/pdf
• 本文言語コード: en
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可