Accelerator mass spectrometry of U at low energies |
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Authors: | Christof Vockenhuber,Marcus ChristlCornelia Hofmann,Johannes LachnerArnold Milenko Mü ller,Hans-Arno Synal |
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Affiliation: | Laboratory of Ion Beam Physics, ETH Zurich, Schafmattstrasse 20, 8093 Zurich, Switzerland |
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Abstract: | The performance of the compact ETH-TANDY system for accelerator mass spectrometry measurements of 236U is presented. Despite the low ion energies of around 1.2 MeV we can demonstrate a background level that is comparable to larger facilities. The careful ion-optical design of the high-energy spectrometer leads to a high suppression of neighboring isotopes sufficient to measure samples with isotopic ratios of 236U/238U > 10-11 the ion chamber only, as demonstrated by systematic investigations with different slit settings and time-of-flight measurements. Additionally, a high overall efficiency is achieved due to a high transmission through the accelerator. |
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Keywords: | Accelerator mass spectrometry 236U Actinides Background suppression |
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