期刊
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
卷 30, 期 5, 页码 1100-1107出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c4ja00452c
关键词
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资金
- National Nuclear Security Administration, Office of Defense Nuclear Nonproliferation Research and Development [DNN-RD/NA-22]
- U.S. Department of Energy (DOE) [DE-AC05-75RLO1830]
- Chemical Science Division, Office of Basic Energy Sciences
- Defense Nuclear Nonproliferation Research and Development Office of the U.S. DOE at the Lawrence Berkeley National Laboratory [DE-AC02-05CH11231]
We utilized femtosecond laser ablation together with multi-collector inductively coupled plasma mass spectrometry to measure the uranium isotopic content of NIST 61x (x = 0, 2, 4, 6) glasses. The uranium content of these glasses is a linear two-component mixing between isotopically natural uranium and the isotopically depleted spike used in preparing the glasses. Laser ablation results match extremely well, generally within a few ppm, with solution analysis following sample dissolution and chemical separation. In addition to isotopic data, sample utilization efficiency measurements indicate that over 1% of ablated uranium atoms reach a mass spectrometer detector, making this technique extremely efficient. Laser sampling also allows for spatial analysis and our data indicate that rare uranium concentration inhomogeneities exist in NIST 616 glass.
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