The influence of injection parameters on mass fractionation phenomena in radiocarbon analysis

G. Quarta; M. DElia; L. Calcagnile

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The influence of injection parameters on mass fractionation phenomena in radiocarbon analysis

机译：注入参数对放射性碳分析中质量分数现象的影响

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摘要

Three different possible sources of mass fractionation have been investigated in an accelerator mass spectrometer system using sequential injection, namely: the influence of the accelerating/decelerating gaps in front of- and after the bouncing magnet, the influence of changes in the ion trajectories for the three carbon isotopes during bouncing and finally the influence of beam intensity. Measurements have indicated that the first two of these sources on the isotopic ratios measurements can be neglected. On the other hand, it was demonstrated that increasing beam intensity influences the ~(14)C/~(12)C ratio and to a lesser extent the ~(14)C/~(13)C ratio. This is probably related to space charge effects.

机译：在使用顺序注入的加速器质谱仪系统中，研究了三种不同的质量分级来源，即：弹跳磁体前后的加速/减速间隙的影响，离子弹道变化的影响。弹跳过程中的三个碳同位素，最后是束强度的影响。测量表明，同位素比测量中这些来源的前两个可以忽略。另一方面，已经证明增加的光束强度影响〜（14）C /〜（12）C比，并且在较小程度上影响〜（14）C /〜（13）C比。这可能与空间电荷效应有关。

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来源
《Nuclear Instruments & Methods in Physics Research. B, Beam Interactions with Materials and Atoms》 |2004年第4期|p.644-648|共5页
作者
G. Quarta; M. DElia; L. Calcagnile;
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作者单位

Department of Engineering of Innovation, University of Lecce, via per Monteroni, Ed. Stecca, 73100 Lecce, Italy;

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原文格式 PDF
正文语种 eng
中图分类原子核物理学、高能物理学;原子能技术;
关键词
accelerator mass spectrometry; radiocarbon; mass fractionation; beam transport;

机译：加速器质谱;碳氟化合物;质量分数;束流传输;

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The influence of injection parameters on mass fractionation phenomena in radiocarbon analysis

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