Characterization of a sealed Americium鈥揃eryllium (AmBe) source by inductively coupled plasma mass spectrometry
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- 作者：James Sommers ; Marcos Jimenez ; Mary Adamic ; Jeffrey Giglio and Kevin Carney
- 关键词：Americium ; Beryllium ; Am– ; Be sources ; Neutron sources ; ICP ; MS
- 刊名：Journal of Radioanalytical and Nuclear Chemistry
- 出版时间：December, 2009
- 出版年：2009
- 期刊代码：48_02365731
- 类别：ch
- 卷：282
- 期：3
- 页码：929-932
- 数据来源：sp
摘要
Two Americium–Beryllium neutron sources were dismantled, sampled (sub-sampled) and analyzed via inductively coupled plasma mass spectrometry (ICP-MS). Characteristics such as “age” since purification, actinide content, trace metal content and inter and intra source composition were determined. The “age” since purification of the two sources was determined to be 25.0 and 25.4 years, respectively. The systematic uncertainties in the “age” determination were 卤4%2σ. The amount and isotopic composition of U and Pu varied substantially between the sub-samples of Source 2 (n = 8). This may be due to the physical means of sub-sampling or the way the source was manufactured. Source 1 was much more consistent in terms of content and isotopic composition (n = 3 sub-samples). The Be–Am ratio varied greatly between the two sources. Source 1 had an Am–Be ratio of 6.3 卤 52%(1σ). Source 2 had an Am–Be ratio of 9.81 卤 3.5%(1σ). In addition, the trace element content between the samples varied greatly. Significant differences were determined between Sources 1 and 2 for Sc, Sr, Y, Zr, Mo, Ba and W.