| ZHANG Wen-zhong,GUO Yong,LUO Yi-sheng,et al.The analysis for energy distribution and biological effects of the clusters from electrons in the tissue equivalent material[J].Chinese Journal of Radiological Medicine and Protection,2004,24(4):372-374 |
| The analysis for energy distribution and biological effects of the clusters from electrons in the tissue equivalent material |
| Received:December 18, 2003 |
| DOI： |
| KeyWords:Electron Tissue equivalent material Energy deposition Cluster DNA molecular lesions |
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| Abstract:: |
| Objective To study energy distribution of the clusters from electrons in the tissue equivalent material, and discuss the important aspects of these clusters on inducing biological effects. Methods Based on the physical mechanism for electrons interacting with tissue equivalent material, the Monte Carlo(MC) method was used. The electron tracks were lively simulated on an event-by-event (ionization, excitation, elastic scattering, Auger electron emission) basis in the material. The relevant conclusions were drawn from the statistic analysis of these events. Results The electrons will deposit their energy in the form(30%) of cluster in passing through tissue equivalent material, and most clusters (80%) have the energy amount of more than 50 eV. The cluster density depends on its diameter and energy of electrons, and the deposited energy in the cluster depends on the type and energy of radiation. Conclusion The deposited energy in cluster is the most important factor in inducing all sort of lesions on DNA molecules in tissue cells. |
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