Study of Accelerator Mass Spectrometry with a Large Tandem Accelerator

大型串联加速器加速器质谱研究

• 批准号: 04559002
• 负责人: NAGASHIMA Yasuo
• 金额: $ 11.52万
• 依托单位: University of Tsukuba
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Developmental Scientific Research (B)
• 财政年份: 1992
• 资助国家: 日本
• 起止时间: 1992 至 1994
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-04559002/
• 关键词: AMS; TANDEM ACCELERATOR; ^<14>C; MASS ANALYSIS; AGE DETERMINATION; AMS; TANDEM ACCELERATOR; ^<14>C; MASS ANALYSIS; AGE DETERMINATION

An accelerator mass spectrometry (AMS) system has been developed with a large 12UD tandem static accelerator as a three year project starting from 1992.A 'di-molecular pilot beam method' has been tested successfully and is used for AMS measurements without any modification to the existing tandem system.Both a negative ion source system and a particle detection system have been constructed. Both system dedicated on the AMS study are connected to the tandem system and are working very well as a essential parts of the AMS system.Up to now, the detection of ^<14>C,^<26>Al, ^<32>Si, ^<36>Cl elements have been commenced. It is confirmed that ^<14>C measurement can be performed within 2% error and with 3*10^<-15> sensitivity. This performance is good enough for many studies using ^<14>C measurement. On the other hand, the precision of the measurement of another element is not highly now.Hereafter, Adding to an improvement on detection accuracy of the heavier element, we are planning to measure 129I with di-molecular pilot beam method as a very important elements especially on our large tandem accelerator.

从1992年开始，已经开发了一个大型12UD串联静态加速器作为三年项目的大型12UUD串联静态加速器，从1992年开始，已经成功地测试了AMS测量，而无需修改现有串联系统。专用于AMS研究的两个系统都连接到串联系统，并且作为AMS系统的重要部分运行良好。到现在为止，已经开始检测 ^<14> c， ^<26> al， ^<32> si， ^<36> cl元素。可以证实， ^<14> C测量可以在2％的误差及3*10 ^<-15>灵敏度内进行。对于使用 ^<14> C测量的许多研究，此性能就足够好。另一方面，另一个元素的测量精度现在不是高度的。此后，除了提高了较重元素的检测准确性，我们计划用Di-Molecular Pilot Beam方法测量129i，这是非常重要的元素，尤其是在我们的大型串联加速器上。