一处损坏的核电设施会释放一定量的放射性物质,其中一些相对来说危害不大,另一些则要危险得多。2 r& s! X6 |# e; I, X3 v8 V
! b4 h" U/ F4 L研究辐射对公众健康影响的非营利组织“辐射与公共安全项目”(Radiation and Public Health Project)的执行理事曼加诺(Joseph Mangano)说,利用高温分裂铀的过程会产生一百多种新的化学物质。' i! d z% z- S. B2 e/ F
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佛罗里达州立大学的核物理学家坎倍尔(Kirby Kemper)表示,核反应堆完全熔解后,会释放一些较低毒性的放射性气体,包括氮-16、氚和氪。这些气体比重轻,会快速消散,对人类的危害不大。/ h7 }! L0 v; {' k d: T/ q
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一位母亲试图与她被隔离的女儿说话。他的女儿被从福岛核电站附近疏散后因有受辐射迹象而被隔离。 4 I3 z/ Q6 V) o- d" k9 \8 R: e, L' H, X8 y' L5 e/ d* D; s1 _
Officials checked for signs of radiation on children from the evacuation area near the Fukushima Daini nuclear plant in Koriyama.$ I. a& o$ ~$ y $ D7 T# X+ g( L9 N" v
An 8.9-magnitude earthquake struck the coast of Japan on Friday at a depth of about 17 miles below the earth's surface. Dozens of aftershocks, some of magnitude 6.0 or greater, were felt after the quake.