Suman H, Kharita M H, Yousef S
Radiological and Nuclear Regulatory Office, Atomic Energy Commission, Damascus ,PO Box 6091, Syria.
Radiat Prot Dosimetry. 2010 Mar;138(4):340-5. doi: 10.1093/rpd/ncp275. Epub 2009 Nov 28.
In this work, the expected neutron and gamma doses in the populated areas outside the newly constructed neutron calibration bunker at the Atomic Energy Commission of Syria will be assessed using the Monte Carlo code MCNP-4C2. The results showed that the maximum ambient dose equivalent rate (neutrons and gammas) outside the bunker would not exceed 0.5 microSv h(-1), assuming an Am-Be neutron source of emission rate of 10(8) n s(-1). The neutron dose is approximately 10 times higher than the photon dose. Sky shine contributes by about 25-50% of the neutron dose and 7-27% of the gamma dose, depending on the location. The simulation uncertainty due to the possible variations in the simulation parameters has been given particular importance.
在这项工作中，将使用蒙特卡罗代码MCNP - 4C2评估叙利亚原子能委员会新建中子校准掩体外部人口密集地区的预期中子和伽马剂量。结果表明，假设发射率为10⁸ n s⁻¹的镅 - 铍中子源，掩体外部的最大环境剂量当量率（中子和伽马）不会超过0.5微希沃特每小时（μSv h⁻¹）。中子剂量大约比光子剂量高10倍。取决于位置，天空反照对中子剂量的贡献约为25% - 50%，对伽马剂量的贡献为7% - 27%。由于模拟参数可能变化而导致的模拟不确定性已得到特别重视。
