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Fig. 1 Twin headed CEM |
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Fig. 4 CEM model KBL15RS/90_H |
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Fig. 7 KBL428 for Omicron SPA LEED |
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Fig. 10 CEM model KBL210_GV |
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Fig. 13 CEM model KBL15RS_135 |
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Fig. 16 CEM Model Belz_Op_2 |
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Fig. 19 CEM model 202 |
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Fig. 22 KBL10RS/HZB |
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Fig. 18 KBL15RS_HMI |
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Fig. 19 NEPTUN/TRITON Ion Counter |
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Fig. 20 Typical peak shape and peak overlap of the U isotope signals on the ion counters |
(J.Schwieters) |
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JupiterMercury
In addition to detectors with standard dimensions, we also offer custom-designed CEMs adapted to the corresponding requirements. The pictures on this page are examples of such detectors. All CEMs fulfill the electro-optical specifications for the standard and EDR types and are delivered with a final test sheet. We would be happy to build a customized detector for you that fits exactly into your measuring unit, whether as a single piece or as a large series.
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Fig. 2 CEM model KBL10RS_MPS |
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Fig. 3 CEM model KBL1707_Delta |
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Fig. 5 KBL510/90 for SPECS SPA LEED |
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Fig. 6 CEM model KBL720/90 |
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Fig. 8 CEM model KBL10RS_short |
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Fig. 9 CEM model KBL10RS_long |
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Fig. 12 CEM Model Tou_V2 |
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Fig. 14 CEM Model Kir_V1 |
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Fig. 15 CEM Model MPS_V2 |
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Fig. 17 Stop CEM JNA |
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Fig. 18 Start CEM JNA |
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Fig. 20 CEM model 205Trap |
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Fig. 21 MPS Jupiter |
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Fig 17. Electron optic with KBL15RS_HMI |
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User Report |
Courtesy of Johannes Schwieters |
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Thermo Fisher Scientific GmbH, Bremen |
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U isotope abundance measurement |
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The graphics show U isotope abundance data from a single uranium oxide particle measured using multiple ion counters in a Finnigan TRITON. The high detection power of the multiple ion counter arrays was employed to search for anomalous 233U/238U and 236U/238U isotope abundance ratios. All errors are within counting statistics. The 238U count rate decreased steadily from 70,000 cps to 15,000 cps over the six runs. Each run lasted 15 min. The measured 236U/238U isotope abundance ratios are on the same
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Measured 236U/238U isotope abundance
order as the abundance sensitivity at two mass units spacing and are at the limits of detection. The magnetic sector mass spectrometer has evolved into a sophisticated high resolution, multicollector instrument capable of measuring isotope abundance variations with extreme levels of precision and, if carefully applied, accuracy. Improvements in detector technology from analog current amplifiers to sophisticated ion counting detectors open the possibility to analyze smaller and smaller sizes.
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Measured 233U/238U isotope abundance |
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