| ~(252)Cf中子源辐照钚部件安全性评估 |
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| 引用本文： | 李虹轶,郭春营,林源根,宋天莉,许伟.~(252)Cf中子源辐照钚部件安全性评估[J].核电子学与探测技术,2016(8):825-829. |
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| 作者姓名： | 李虹轶 郭春营 林源根 宋天莉 许伟 |
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| 作者单位： | 北京市清河大楼子六,北京,100094 |
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| 基金项目： | 国防预先研究项目(513310401)。 |
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| 摘 要： | 在分析~(252)Cf中子源辐照钚部件产热机理基础上,应用MC法计算了钚部件裂变热功率以及~(252)Cf源γ射线能量沉积热功率;建立理论模型,计算了钚部件冷却过程中衰变热。相比自发衰变热功率,典型中子源强照射下钚部件的热效应并不严重。利用缓发γ能谱近似模型,计算了拟人体外照射剂量。与国际放射防护委员会(ICRP)建议值相比,典型中子源强照射下操作人员接受的辐射剂量在安全范围内。
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| 关 键 词： | 252 Cf中子源 诱发裂变 衰变热 有效剂量 安全性 |
Evaluation of the Security of the Plutonium Components Irradiated by the 252 Cf neutron Sources |
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| Abstract: | Mechanism of heat production in the plutonium components irradiated by the 252 Cf neutron sources was analyzed. The fission heat powers of the plutonium components and the heat powers for the deposited energy of theγray from the 252 Cf sources were calculated with the Monte Carlo ( MC) simulation. The appropriate cal-culation model was built and the decay heat from the plutonium components was computed. Compared with the spontaneous decay heat power, the heat effects are minor for the neutron sources of typical intensity. Using the approximate model of the delayed γ spectrum, the external radiation doses absorbed by the anthropomorphic phantoms were calculated. Compared with the dose threshold proposed by the International Commission on Ra-diological Protection ( ICRP) , the doses absorbed by the operators for the neutron sources of typical intensity are in the safety range. |
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| Keywords: | 252 Cf neutron source induced fission decay heat effective dose security |
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