| 周刚,于涛*,谢金森.30万居里60Co辐照装置贮源井屏蔽计算[J].南华大学学报(自然科学版),2010,24(2):8~11.[ZHOU Gang1,2,YU Tao2*,XIE Jin-sen1.Shielding Calculation of the Storage Well for 3×105 Curie60Co Irradiation Facility[J].Journal of University of South China(Science and Technology),2010,24(2):8~11.] |
| 30万居里60Co辐照装置贮源井屏蔽计算 |
| Shielding Calculation of the Storage Well for 3×105 Curie60Co Irradiation Facility |
| 投稿时间：2010-05-06 |
| DOI： |
| 中文关键词: 贮源井 屏蔽计算 MCNP 曲线拟合 |
| 英文关键词:storage well shielding calculation MCNP curve fitting |
| 基金项目: |
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| 中文摘要: |
| 使用MCNP计算30万居里60Co辐照装置贮源井铅屏蔽盖中心轴不同点处的光子注量率,通过拟合得出光子注量率的衰减系数,外推出铅屏蔽盖上表面中心点处的剂量.结果表明,铅屏蔽盖表面最大剂量率为5.91×10-9 Sv/s,检修时工作人员受到的年最大剂量水平为0.55 mSv,低于20 mSv每年的职业照射限值. |
| 英文摘要: |
| Photon fluence rate on different points of central axis in Pb shielding cover of storage well for 3×105 Curie 60Co irradiation facility were calculated by using MCNP,attenuation coefficient of fluence rate was obtained by liner fitting,and the dose rate on center point of Pb cover surface was calculated by extrapolation.The results show that maximum dose rate on cover surface is 5.91×10-9 Sv/s,the maximum year dose level is 0.55 mSv,which is lower than occupational dose limits 20 mSv. |
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