The Development of an Excel tm Spreadsheet to Help Evaluate and Estimate Mass Spectroscopy Measurement Unceartanties

The auther developed a rudimentary spreadsheet that allowed the mass spectroscopy group at NBL evaluate and estimate uncertanties associated with their measurements on the final atomic weightsm atomic and weight %, as well as the 233U/238U, 234U/238U, 235U/238U, and 236U/238U atom ratios. The mass spectroscopy group uses this data to netter plan their measurements as well as estimate the number of measurements required to reduce their overall encertainty below required limits. This report describes the fundemental calculations used and presents some preliminary data from actual work at NBL.