High contrast radiography using a small dense plasma focus

被引：17
|
作者：
Castillo, F. [1 ]
Gamboa-deBuen, I. [1 ]
Herrera, J. J. E. [1 ]
Rangel, J. [1 ]
Villalobos, S. [2 ]
机构：
[1] Univ Nacl Autonoma Mexico, Inst Ciencias Nucl, Coyoacan 04511, DF, Mexico
[2] Univ Nacl Autonoma Mexico, Fac Ing, Mexico City 04510, DF, Mexico
来源：
APPLIED PHYSICS LETTERS | 2008年 / 92卷 / 05期
关键词：
D O I：
10.1063/1.2840191
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Radiographs are obtained with a small (4.6 kJ) dense plasma focus machine, using the x-rays which cross a 300 mu m aluminum window on the axis. Contrast is improved by inserting an iron needle on the tip of the electrode. Measurements with TLD-100 dosimeters have shown the average dose to increase from 0.077 +/- 0.006 mGy/shot, when a hollow cathode is used, to 0.11 +/- 0.01 mGy/shot, with the needle. The spectrum is estimated using aluminum filters and the effective equivalent energy is found to be in the range of 20-25 keV. (C) 2008 American Institute of Physics.
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