超软X射线在小型圆柱形靶中的能量沉积。

Energy deposition in small cylindrical targets by ultrasoft x-rays.

作者信息

Nikjoo H, Goodhead D T, Charlton D E, Paretzke H G

机构信息

Medical Research Council, Radiobiology Unit, Didcot, Oxon, UK.

出版信息

Phys Med Biol. 1989 Jun;34(6):691-705. doi: 10.1088/0031-9155/34/6/005.

DOI:10.1088/0031-9155/34/6/005

PMID:2740437

Abstract

A Monte Carlo technique has been employed to calculate the energy deposition events in small cylindrical targets (less than or equal to 100 nm), including sizes which represent the DNA duplex, nucleosome and chromatin fibre, by simulated electron tracks from C (278 eV), A1 (1487 eV) and Ti (4509 eV) characteristic ultrasoft x-rays in water. Detailed examples of input data tables for the generation of electron tracks produced from the x-ray photon interactions are presented. Frequencies of energy deposition events per gray for target sizes from 1 to 100 nm are given and comparisons have been made with radiations of different qualities.

摘要

采用蒙特卡罗技术，通过模拟水中碳（278电子伏特）、铝（1487电子伏特）和钛（4509电子伏特）特征超软X射线的电子轨迹，计算小圆柱形靶（小于或等于100纳米）中的能量沉积事件，这些靶尺寸代表了DNA双链体、核小体和染色质纤维。给出了用于生成由X射线光子相互作用产生的电子轨迹的输入数据表的详细示例。给出了1至100纳米靶尺寸每格雷能量沉积事件的频率，并与不同性质的辐射进行了比较。