核事故地面辐射场γ能谱及角分布

γ energy spectra and direction distribution over area contaminated

核素 13 1I和 13 7Cs地表污染场是在堆芯熔化事故后可能出现的两种典型辐射场 ,就 13 1I和13 7Cs两种地面均匀污染场中高度 1m处γ辐射的剂量能谱和角分布用 Monte

I or 137Cs dominantly contaminated large area may typically appear following a major nuclear accident releasing radionuclides. The energy spectra of gamma ray fluence rates and dose rates at 1 m above ground contaminated by 131I and 137Cs, and at 9 polar angulars are reported in this paper. Also, the direction distributions of dose rate and direct γ ray flucee rate are presented by figures and tables.