Wallenius M, Mayer K
University of Helsinki, Department of Chemistry, Finland.
Fresenius J Anal Chem. 2000 Feb;366(3):234-8. doi: 10.1007/s002160050046.
Age is a key parameter when deducing the history of plutonium material, i.e. the plutonium produced in the nuclear reactors. This is of vital importance, when a smuggled plutonium sample has been seized and the origin has to be determined. A methodology is described which allows accurately to determine the age of plutonium material by thermal ionisation mass spectrometry using independent parent/daughter relations. This has been demonstrated for Reference Materials of known ages as well as for real samples. The already established method using gamma spectrometry is compared to this.
在推断钚材料（即核反应堆中产生的钚）的历史时，年龄是一个关键参数。当查获一个走私的钚样本并需要确定其来源时，这一点至关重要。本文描述了一种方法，该方法可通过热电离质谱法利用独立的母子体关系准确测定钚材料的年龄。这已在已知年龄的参考物质以及实际样本中得到验证。并将已确立的伽马能谱法与此方法进行了比较。
