Nagatomo T, Hoshi M, Ichikawa Y
Department of Physics, Nara University of Education, Japan.
J Radiat Res. 1992 Sep;33(3):211-7. doi: 10.1269/jrr.33.211.
The gamma ray dose at 2.05 km ground distance from the Hiroshima atomic bomb hypocenter was measured from roof tile samples by a thermoluminescence technique. Two tile samples collected at 2.45 km also were analyzed to check the reliability of the background estimates. The result for the 2.05 km distance was 129 +/- 23 mGy for five-tile sample average. This value is 2.2 times larger than the corresponding DS86 estimate. These results and those in the literature show the DS86 estimate is 50% or less of the measured value 2.05 km from the Hiroshima hypocenter.
通过热释光技术，从屋顶瓦片样本中测量了距广岛原子弹爆炸中心地面距离2.05公里处的伽马射线剂量。还对在2.45公里处采集的两个瓦片样本进行了分析，以检验背景估计的可靠性。对于五片样本的平均值，2.05公里距离处的测量结果为129±23毫戈瑞。该值比相应的DS86估计值大2.2倍。这些结果以及文献中的结果表明，DS86估计值是距广岛爆炸中心2.05公里处测量值的50%或更低。
