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| Trinquier, Anne; Maden, Colin; Faure, Anne-laure; Hubert, Amélie; Pointurier, Fabien; Bourdon, Bernard; Schönbächler, Maria. |
| Numerous applications require the precise analysis of U isotope relative enrichment in sample amounts in the sub-nanogram to picogram range, among those are nuclear forensics, nuclear safeguards, environmental survey and geosciences. However, conven-tional thermal ionization mass spectrometry (TIMS) yields U combined ionization and transmission efficiencies (i.e ratio of ions detected to sample atoms loaded) less than 0.1 or 2% depending on the loading protocol, motivating the development of sources capable of enhancing ionization. The new prototype cavity source TIMS at ETH offers improvements from 4 to 15 times in com-bined ionization and transmission efficiency compared to conventional TIMS, yielding up to 5.6 % combined efficiency. Uranium isotope... |
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| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00489/60037/63304.pdf |
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