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Preparation of 241Am/243Am gravimetric mixtures and development of Am isotopic and assay measurement techniques using thermal ionization mass spectrometry
International Journal of Mass Spectrometry ( IF 1.8 ) Pub Date : 2020-12-01 , DOI: 10.1016/j.ijms.2020.116430
K.J. Mathew , C.F. Ottenfeld , R.C. Keller , K.J. Kuhn , J.B. Fulwyler

Abstract Three gravimetric mixtures with 241Am/243Am isotope ratios at nominally 1:1, 20:1, and 200:1 were prepared for calibration of the thermal ionization mass spectrometer instruments used for americium isotopic and assay measurements by isotope dilution mass spectrometry. The total evaporation analytical technique was developed for high-accuracy and precision measurements of Am isotopic ratios. The technique was also applied to Am assay measurements using isotope dilution mass spectrometry. The Am isotope ratio and assay measurement techniques were utilized to characterize batches of americium oxide separated from plutonium materials in storage at Los Alamos National Laboratory in support of commercial use of 241AmO2. LA-UR-20-23098

中文翻译:

使用热电离质谱法制备 241Am/243Am 重量混合物以及开发 Am 同位素和分析测量技术

摘要 制备了三种 241Am/243Am 同位素比为 1:1、20:1 和 200:1 的重量混合物,用于校准用于镅同位素和同位素稀释质谱法测定的热电离质谱仪。全蒸发分析技术专为高精度测量 Am 同位素比值而开发。该技术还应用于使用同位素稀释质谱法的 Am 测定测量。Am 同位素比和分析测量技术被用来表征从洛斯阿拉莫斯国家实验室储存的钚材料中分离出来的氧化镅批次,以支持 241AmO2 的商业用途。LA-UR-20-23098
更新日期:2020-12-01
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