Schneider Robert J.
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PreprintSoftware development for continuous-gas-flow AMS( 2007-09) von Reden, Karl F. ; Roberts, Mark L. ; Jenkins, William J. ; Rosenheim, Brad E. ; McNichol, Ann P. ; Schneider, Robert J.The National Ocean Sciences Accelerator Mass Spectrometry (NOSAMS) Facility at Woods Hole Oceanographic Institution is presently completing installation of a novel continuous-flow AMS system. A multi-year development of an AMS microwave gas ion source in collaboration with Atomic Energy Canada Limited (AECL), Chalk River, has preceded this final step of an implementation that is expected to add a new dimension to 14C AMS. National Instruments, NIM, and CAMAC modules have been programmed with LabVIEW on a Windows XP platform to form the basis for data acquisition. In this paper we discuss possible applications and include simulations of expected data acquisition scenarios like real-time AMS analysis of chromatograms. Particular attention is given to issues of synchronization between rapidly changing input amplitudes and signal processing cycles in hardware and software.
PreprintProgress on a gas-accepting ion source for continuous-flow accelerator mass spectrometry( 2007-02) Roberts, Mark L. ; Schneider, Robert J. ; von Reden, Karl F. ; Wills, J. S. C. ; Han, Baoxi ; Hayes, John M. ; Rosenheim, Brad E. ; Jenkins, William J.A gas-accepting microwave-plasma ion source is being developed for continuous-flow Accelerator Mass Spectrometry (AMS). Characteristics of the ion source will be presented. Schemes for connecting a gas or liquid chromatograph to the ion source will also be discussed.