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

Seul-Ki HAN; Se-Hwan PARK; Seong-Kyu AHN

doi:10.1088/2058-6272/ab85bc

Plasma Science and Technology > 2020 > 22(7): 74015-074015. > DOI: 10.1088/2058-6272/ab85bc

Seul-Ki HAN, Se-Hwan PARK, Seong-Kyu AHN. Uranium measurements using laser-induced breakdown spectroscopy in lithium chloride- potassium chloride salt of pyroprocessing[J]. Plasma Science and Technology, 2020, 22(7): 74015-074015. DOI: 10.1088/2058-6272/ab85bc

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

Korea Atomic Energy Research Institute, Yuseong-gu, Daejeon 34057, Republic of Korea

Funds: This work was supported by a grant from the National Research Foundation of Korea (NRF) funded by the Korean government (MSIP) (No. NRF-2017M2A8A5015084), and was partly supported by the Nuclear Safety Research Program through the Korea Foundation of Nuclear Safety (KoFONS) using financial assistance granted by the Nuclear Safety and Security Com- mission (NSSC) of the Republic of Korea (No. 1903014).

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Received Date: December 29, 2019
Revised Date: March 30, 2020
Accepted Date: March 31, 2020

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Abstract

Abstract

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 of 11.5 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.
- LIBS,
- uranium(U),
- safeguards,
- LOD

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