Shielding activation of petawatt laser facilities in Romania: a FLUKA preliminary evaluation
Abstract
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.
炸看了这个文章，不太明白怎么模拟的时间的。。但是之后明白了，明明白白给了时间，给了功率，肯定能算出来入射的总能量，然后根据剂量再除以时间即可，下面是谷歌翻译的很不错，
FLUKA 2011.2c代码用于评价在1个petawatt激光束与靶相互作用期间发射的次级带电粒子在照射室壁中诱导的活性。 结果表明，即使在最保守的方法， 300和100 MeV二次电子和质子，在照射结束后1分钟，在室壁前面1cm处的最大当量剂量率为〜23nSv h -1。 三分钟后，它降至约60 pSv h-1，对于罗马尼亚报道的90-110nSv h-1的环境辐射背景可忽略不计。
很在理，文章逻辑很好，不用看全文都知道