目的探讨放射性药品生产人员内照射剂量估算方法。方法以某生产碘-125(125I)密封籽源和碘-131(131I)胶囊的密封企业为例,通过估算工作人员的摄入量,分析工作人员吸入放射性核素产生的内照射年受照剂量。结果生产125I密封籽源和131I胶囊...目的探讨放射性药品生产人员内照射剂量估算方法。方法以某生产碘-125(125I)密封籽源和碘-131(131I)胶囊的密封企业为例,通过估算工作人员的摄入量,分析工作人员吸入放射性核素产生的内照射年受照剂量。结果生产125I密封籽源和131I胶囊的工作人员因吸入放射性核素造成的内照射年受照剂量为1.90 m Sv。与该企业的监测结果比较,125I工作场所的气溶胶放射性核素水平和工作人员的甲状腺剂量监测值分别与估算结果基本一致。结论放射性药品生产企业工作人员的内照射剂量不容忽视,应采取必要的辐射防护措施,设计合理的气流组织,定期对气溶胶进行有效监测。展开更多
Differential cross sections for the quasi-elastic scattering of^16 C at 47.5 MeV/nucleon from ^12 C target are measured.Coupled-channels calculations are carried out and the optical potential parameters are obtained b...Differential cross sections for the quasi-elastic scattering of^16 C at 47.5 MeV/nucleon from ^12 C target are measured.Coupled-channels calculations are carried out and the optical potential parameters are obtained by fitting the experimental angular distribution.展开更多
In order to look for a proposed cluster structure of 16C, simulation work was made. The simulation of the reaction dynamics give the resolution of the excitation energy on 16C which was reconstructed prior to breakup....In order to look for a proposed cluster structure of 16C, simulation work was made. The simulation of the reaction dynamics give the resolution of the excitation energy on 16C which was reconstructed prior to breakup. The excitation energy resolution is typically ～200 keV at 2 MeV above the two body decay threshold for 16C→12Be+4He. Moreover,some performances of detectors tested using 241Am α source are also reported.展开更多
文摘目的探讨放射性药品生产人员内照射剂量估算方法。方法以某生产碘-125(125I)密封籽源和碘-131(131I)胶囊的密封企业为例,通过估算工作人员的摄入量,分析工作人员吸入放射性核素产生的内照射年受照剂量。结果生产125I密封籽源和131I胶囊的工作人员因吸入放射性核素造成的内照射年受照剂量为1.90 m Sv。与该企业的监测结果比较,125I工作场所的气溶胶放射性核素水平和工作人员的甲状腺剂量监测值分别与估算结果基本一致。结论放射性药品生产企业工作人员的内照射剂量不容忽视,应采取必要的辐射防护措施,设计合理的气流组织,定期对气溶胶进行有效监测。
基金Supported by the National Basic Research Program of China under Grant No 2007CB815002, the National Natural Science Foundation of China under Grant Nos 10405002, 10775003 and 10720003, the Found for Fostering Talents of Basic Science （NFFTBS） （J073316）.
文摘Differential cross sections for the quasi-elastic scattering of^16 C at 47.5 MeV/nucleon from ^12 C target are measured.Coupled-channels calculations are carried out and the optical potential parameters are obtained by fitting the experimental angular distribution.
基金Supported by National Natural Science Foundation of China (10405002)
文摘In order to look for a proposed cluster structure of 16C, simulation work was made. The simulation of the reaction dynamics give the resolution of the excitation energy on 16C which was reconstructed prior to breakup. The excitation energy resolution is typically ～200 keV at 2 MeV above the two body decay threshold for 16C→12Be+4He. Moreover,some performances of detectors tested using 241Am α source are also reported.
