| 闪光照相中散射照射量的解析分析 |
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| 引用本文： | 施将君,李必勇,刘军,刘进.闪光照相中散射照射量的解析分析[J].强激光与粒子束,2006,18(7):1211-1214. |
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| 作者姓名： | 施将君 李必勇 刘军 刘进 |
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| 作者单位： | 中国工程物理研究院 流体物理研究所, 四川 绵阳 621900 |
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| 摘 要： | 考虑了光子与物质的三种相互作用方式，用解析分析法确定光子在材料中能量的一次散射转化几率，并由此求得闪光照相系统中成像平面上的散射和最小直散比的表达式。用该公式求得的FTO客体的最小直散比约为1.0，与美国NIH实验结果0.5~1.5近似符合。
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| 关 键 词： | 康普顿效应 对生成效应 散射转化几率 散射照射量 |
| 文章编号： | 1001-4322(2006)07-1211-04 |
| 收稿时间： | 2005-10-10 |
| 修稿时间： | 2006-04-27 |
Analytic determination of scatter exposure for radiography |
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| SHI Jiang-jun,LI Bi-yong,LIU Jun,LIU Jin.Analytic determination of scatter exposure for radiography[J].High Power Laser and Particle Beams,2006,18(7):1211-1214. |
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| Authors: | SHI Jiang-jun LI Bi-yong LIU Jun LIU Jin |
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| Institution: | Institute of Fluid Physics, CAEP, P. O. Box 919-105, Mianyang 621900, China |
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| Abstract: | The energy conversion probability from the primary X-ray to the first scattered ray in object material is analytically obtained in consideration of three interaction types,including photoelectric effect,Compton scatter and pair production.The approximative formulae for the scattering exposure and the minimal direct-scatter ratio on the imaging plane in radiography are given.The estimated minimal direct-scatter ratio for FTO is in agreement with the of National Insitute of Heath experiment result. |
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| Keywords: | Compton scatter Pair production Energy convert probability of scatter Scattering exposure |
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