WiscSIMS, the Wisconsin Secondary Ion Mass Spectrometer Laboratory, explores new applications of in situ analysis to stable isotope geochemistry. Research in many disciplines can benefit by using the IMS-1280 ion microprobe, a CAMECA large radius magnetic sector SIMS. The dramatic reductions of sample size and analysis spot sizes from 1 to 10 micrometers offer many exciting, potentially revolutionary, research opportunities.

For External Users (Oct. 8, 2020)

WiscSIMS laboratory has been reopened since June, but under limitsed access following the University of Wisconsin rules and safety protocols. Currently, outside users are not allowed to enter the laboratory, which may continue for the foreseeable future.

We have been analyzing samples for external users without them being present in the laboratory. External users provide sample images on which they have indicated analysis spots or locate them in QGIS. The analyses are then conducted by WiscSIMS staff scientists using these images. While the preselection of points is not always ideal, it can lead to enhanced analytical efficiency (more analyses per analysis day) and can allow in some cases for additional unattended analysis in the evening.

WiscSIMS scientists may communicate closely with external users during analyses session and provide updates on their results. This will allow users to have flexibility on their analytical plans, such as selecting more analysis positions of specific samples to further clarify unexpected findings, or reducing number of analyses from a sample that show small variabilities.

Although this analysis protocol may not work for every sample, we welcome those who think this might work for them. Please contact us if you are interested in doing analyses in this way. Obtaining sample images is responsibility of external users, though we can assist users who do not have access to microscopes and SEM facilities.

Except for the prohibition of outside users in the laboratory, we are following the same procedures as before Covid19. To apply for instrument time and user check list see our website.


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