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1.美国阿里松纳大学
2.北京大学
3.南京大学
收稿日期:1983-06-07,
纸质出版日期:1984-10
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范章云, 陈铁梅, 原思训, 等. 树木年轮中14C比度涨落的研究[J]. 核技术, 1984,07(5):11-13,22,71.
C. Y. Fan, Tiemei Chen, Sixun Yun, et al. Radiocarbon activity variation in dated tree rings grown in mackenzie delta[J]. Nuclear techniques, 1984, 07(5): 11-13,22,71.
用液体闪烁法测量了一棵生长在北纬68°地区白云杉的45圈树年轮(公元1881~1925年)中
14
C放射性比度随年轮的变化。实验数据表明,
14
C比度有10‰的涨落,并与太阳黑子数负关联。本文讨论了该现象的地球物理原因。
Forty-five tree rings (1881-1925) were taken from a white spruce grown near Campell River in Mackenzie Delta
Canada
for the measurement of
14
C activity variation. The
14
C content in these specimens was measured with a liquid scintillation counter. The data shows there is a 10‰ variation in
14
C contents. which is correlated with sunspot numbers. The physical implication is discussed.
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