Rapid concentration and isotopic measurements of ultra-trace 235U fission products with comparison to an ORIGEN isotope depletion model

TALANTA

卷:205

Article

Roach, Benjamin D.¹  Fenske, Emilie K.^1,2  Glasgow, David C.¹  Partridge, John D.¹  Keever, Tamara J.¹  Giaquinto, Joseph M.¹ 

[1] Oak Ridge Natl Lab, 1 Bethel Valley Rd, Oak Ridge, TN 37830 USA

[2] Univ Tennessee, Inst Nucl Secur, 1640 Cumberland Ave, Knoxville, TN 37996 USA

关键词: Rapid;    ICPMS;    Ion chromatography;    Fission products;    Isotopic analysis;    ORIGEN;   

DOI  :  10.1016/j.talanta.2019.06.079

来源: Elsevier

【 摘 要 】

This article presents the application of an automated online separation-direct analysis method, RAPID (Rapid Analysis of Post-Irradiation Debris), for the simultaneous measurement of both radioactive and stable fission isotopes from an irradiated highly-enriched uranium target. Developed for the measurement of the concentration and isotopic composition of over 40 elements down to the femtogram level, the RAPID method possesses the sensitivity, stability, and precision required to achieve accurate, low-level analyses of elements of non-natural origin. The isotopic compositions and concentrations of key fission elements cesium, strontium, yttrium, lanthanum, cerium, praseodymium, neodymium, promethium, and samarium have been measured repeatedly over a six-week period. The validity of these measurements was confirmed using ORIGEN (Oak Ridge Isotope GENeration), an isotope depletion and decay modeling software, to within 1-3%.

【 授权许可】

Free