载有钚-238放射源航天器发射事故放射性气溶胶高斯弥散模型分析

Analysis of Plutonium-238 Aerosol Gaussian Dispersal Model in Spacecraft Launch Accident

摘要: 为了评估航天器发射事故中钚-238放射性气溶胶的影响，本文运用高斯弥散模型，计算了事故释放点周围人员受照的有效剂量、可吸入气溶胶的浓度和地面沉积浓度。计算结果表明，不同的气溶胶弥散状态所导致的放射性物质污染区域和范围有所区别。该结果将为发射事故的快速辐射应急响应提供依据。

Abstract: In order to evaluate the plutonium-238 aerosol pollution consequence in spacecraft launch accident, the Gaussian dispersal model was used to calculate the total effective dose of exposure staff, respirable aerosol concentration and ground deposition concentration around release point of the accident. The results show that the area and extent of radioactive contamination are different due to different aerosol dispersal states. The results will provide the basis for the rapid radiation emergency response in the launch accident.