Florescu Gabriela M, Duliu O G
Center of Technology and Engineering for Nuclear Projects, 409 Atomistilor str, PO Box 5204-MG-4, Magurele (Ilfov) 077125, Romania University of Bucharest, Doctoral School on Physics, Atomistilor str. 405, PO Box MG-11, Magurele (Ilfov) 077125, Romania.
Department of Structure of Matter, Earth and Atmospheric Physics and Astrophysics, University of Bucharest, 405, Atomistilor str., PO Box MG-11, Magurele (Ilfov) 077125, Romania
Radiat Prot Dosimetry. 2016 Mar;168(4):566-9. doi: 10.1093/rpd/ncv371. Epub 2015 Jul 28.
The FLUKA 2011.2c code was used to evaluate the activity induced in the irradiation chamber walls by secondary charged particles emitted during the interaction of 1 petawatt laser beam with the targets. The results have shown that, even in the most conservative approaches, i.e. 300 and 100 MeV secondary electrons and protons, respectively, the maximum equivalent dose rate, at 1 cm in front of the chamber wall, 1 min after the end of irradiation, was of ∼23 nSv h(-1). Three minutes later, it falls at ∼60 pSv h(-1), negligible with respect to the environmental radiation background of 90-110 nSv h(-1), as reported for Romania.
使用FLUKA 2011.2c代码评估了1拍瓦激光束与靶相互作用期间发射的次级带电粒子在辐照腔室壁中诱导产生的活度。结果表明，即使在最保守的方法中，即分别为300 MeV和100 MeV的次级电子和质子，在辐照结束1分钟后，腔室壁前方1 cm处的最大等效剂量率约为23 nSv h⁻¹。三分钟后，其降至约60 pSv h⁻¹，相对于罗马尼亚报告的90 - 110 nSv h⁻¹的环境辐射本底可忽略不计。
