The Influence of Solar Flare and Nuclear Tests on 14C Concentration in Atmosphere
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摘要: 根据一系列简化模型和有关的观测资料,Lingenfelter和Ramaty算得1937—1967年三个太阳活动周期内全球14C产率的平均值为2.2±0.414C/cm2·s,以及1956—1961年太阳耀斑引起的年平均14C产率,其中1956.2.23太阳耀斑引起的当年14C平均产率高达2.3314C/cm2·s,使大气中14C浓度增加近8‰.Abstract: The 14C content in 1940-1967 rings of a white spruce grown in Mackenzie Delta (68°N, 130°W) was measured in order to see if solar flare and nuclear tests could cause any measurable variation of 14C concentration in the atmosphere. The results are presented and discussed.
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