Electronic Resource
Factors related to 41K interference on 41Ca AMS measurements
| العنوان: | Factors related to 41K interference on 41Ca AMS measurements |
|---|---|
| المؤلفون: | Ministerio de Economía y Competitividad (España), Vivo-Vilches, C. [0000-0002-4972-4072], López-Gutiérrez, J. M. [0000-0001-8672-8075], García-León, Manuel [0000-0002-8792-6791], Vivo Vilches, Carlos, López-Gutiérrez, J. M., García-León, Manuel, Vockenhuber, Christof |
| بيانات النشر: | Elsevier 2019-01-01 |
| نوع الوثيقة: | Electronic Resource |
| مستخلص: | Dealing with the 41K interference during 41Ca measurement with low energy AMS systems is challenging. The detection of 39K to correct the measured 41Ca/40Ca ratios is a powerful tool that improves precision and accuracy. However, the study of the sources of this interference can help to reduce it to its minimum. In this work, it is shown that iron is a factor enhancing the production of the 41K interference, since the (41K57Fe)− ion has the same mass as (41K19F3)−. To validate this observation, we measured 57Fe2+ together with 41M2+ (all ions with mass 41) and 39K2+ in a blank sample and an aluminum target at the 600 kV AMS system at ETH Zurich. We also show the temporal evolution of 41M/40Ca and 39K/40Ca ratios in two blank samples during a measurement on the 1 MV AMS system at CNA Seville. Even when unstable behavior for these ratios is observed for one of the blanks, the relationship between both, 41M/39K, is relatively stable over time. This supports the accuracy of the K–correction method, providing that it is applied sequence by sequence. Two programs, one for each of these compact AMS systems, were written in FORTRAN code to deal with the complexity of the data analysis due to the K-correction. |
| مصطلحات الفهرس: | Accelerator Mass Spectrometry, 41K interference, 41Ca, K-correction, artículo |
| URL: | Sí info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/FIS2015-69673-P |
| الاتاحة: | Open access content. Open access content closedAccess |
| ملاحظة: | English |
| Other Numbers: | CTK oai:digital.csic.es:10261/195221 Nuclear Instruments and Methods in Physics Research - Section B 438: 193-197 (2019) 0168-583X 10.1016/j.nimb.2018.04.031 1257731603 |
| المصدر المساهم: | CSIC From OAIster®, provided by the OCLC Cooperative. |
| رقم الانضمام: | edsoai.on1257731603 |
| قاعدة البيانات: | OAIster |
| الوصف غير متاح. |