~(236)U灵敏度的AMS测量

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长寿命放射性核素~(236)U的半衰期为2.34×10~7a,主要来源是~(235)U的中子俘获反应.加速器质谱法是目前测量~(236)U灵敏度最高的方法.本工作利用意大利那不勒斯第二大学同位素研究环境与文化遗产中心的AMS装置测量~(236)U的灵敏度,并分析了加速器质谱测量~(236)U时本底的可能来源.初步结果表明,~(236)U的灵敏度~(236)U/原子比)为(2.29±0.13)×10~(-10).
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