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http://dx.doi.org/10.5516/NET.2008.40.4.311

SHIELDED LASER ABLATION ICP-MS SYSTEM FOR THE CHARACTERIZATION OF HIGH BURNUP FUEL  

Ha, Yeong-Keong (Korea Atomic Energy Research Institute)
Han, Sun-Ho (Korea Atomic Energy Research Institute)
Kim, Hyun-Gyum (Korea Atomic Energy Research Institute)
Kim, Won-Ho (Korea Atomic Energy Research Institute)
Jee, Kwang-Yong (Korea Atomic Energy Research Institute)
Publication Information
Nuclear Engineering and Technology / v.40, no.4, 2008 , pp. 311-318 More about this Journal
Abstract
In modem power reactors, nuclear fuels have recently reached 55,000 MWd/MtU from the initial average burnup of 35,000 MWd/MtU to reduce the fuel cycle cost and waste volume. At such high burnups, a fuel pellet produces fission products proportional to the burnup and creates a typical high burnup structure around the periphery region of the pellet, producing the so called 'rim effect'. This rim region of a highly burnt fuel is known to be ca. $200\;{\mu}m$ in width and is known to affect the fuel integrity. To characterize the local burnup in the rim region, solid sampling in the micro meter region by laser ablation is needed so that the distribution of isotopes can be determined by ICP-MS. For this procedure, special radiation shielding is required for personnel safety. In this study, we installed a radiation shielded laser ablation ICP-MS system, and a performance test of the developed system was conducted to evaluate the safe operation of instruments.
Keywords
Shielded Laser Ablation ICP-MS; Micro Sampling; High Burnup Fuel;
Citations & Related Records

Times Cited By Web Of Science : 3  (Related Records In Web of Science)
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