Uranium measurements using laser-induced breakdown spectroscopy in lithium chloride-potassium chloride salt of pyroprocessing  

作　　者：Seul-Ki HAN Se-Hwan PARK Seong-Kyu AHN 

机构地区：[1]Korea Atomic Energy Research Institute,Yuseong-gu,Daejeon 34057,Republic of Korea

出　　处：《Plasma Science and Technology》2020年第7期110-115,共6页等离子体科学和技术（英文版）

基　　金：supported by a grant from the National Research Foundation of Korea(NRF)funded by the Korean government(MSIP)(No.NRF-2017M2A8A5015084);supported by the Nuclear Safety Research Program through the Korea Foundation of Nuclear Safety(Ko FONS)using financial assistance granted by the Nuclear Safety and Security Commission(NSSC)of the Republic of Korea(No.1903014)。

摘　　要：In pyroprocessing,uranium(U) is recovered from molten LiCl-KCl salt,and,for safeguard purposes,it is important to analyze the U and Plutonium(Pu) concentrations in a timely manner.In the present work,salt samples containing U were fabricated.The laser used in the present work was an Nd:YAG laser with a wavelength of 532 nm,a laser energy on the sample of11.5 mJ,and a pulse repetition rate of 10 Hz.The plasma emission light was measured with an Echelle spectrometer.A total of 100 points on the sample surface were measured as the laser incident position was changed.The U and potassium(K) peaks in the spectrum were identified.Univariate and multivariate analyzes were conducted to determine the accuracy and limit of detection(LOD) of the laser-induced breakdown spectroscopy.

关 键 词：LIBS uranium(U) SAFEGUARDS LOD 

分 类 号：O657.3[理学—分析化学] TN248[理学—化学]