The simultaneous injection based HVEE 4130 AMS is famous for its high precession of 14C measurement. However, it is not as good as bouncer injection based AMS to analyze other long life radioisotopes demanding high sensitivity. Consequently, some rich laboratories have to establish dual injection systems with both simultaneous injection and sequential injection to respectively measure 14C and other radioisotopes. Such systems are too expensive. In order to measure 14C with high precession and other radioisotopes with high sensitivity, in this paper, we present a patented cascade dual injection system, which combines the recombinator of HVEE 4130 with a Wien filter located behind the ion source system. When the pulsing voltage is alternatively applied on the Wien filter, the sequential injection mode is carrying out, but the 12C, 13C and 14C would pass through the different trajectories inside the recombinator. When the pulsing voltage is turned off, the Wien filter is just as a short beam pipe, the simultaneous injection mode is carrying out as usual HVEE 4130 AMS.
See more of Poster Session II
See more of The 10th International Conference on Accelerator Mass Spectrometry (September 5-10, 2005)