title: Mass spectrometric determination of 234U/238U ratio with improved precision.
abstract: A new mass spectrometric method is proposed for measurement of 234U/238U ratio with a single Daly electron multiplier detector using the general peak jump method. The method is based on precise measurement of the 235U/238U ratio and 234U/235U ratio, which are used to calculate the 234U/238U ratio using the equation 234U/238U = 235U/238U x 234U/235U. The results show a significant improvement, i.e., more than 35 times better precision in measuring the (234)U/(238)U ratio with this method (sigma = 2.9 x 10(-8)) as compared to direct measurement of 234U/238U (sigma = 1.1 x 10(-6)). The method widens the applicability of the single collector system, and it will potentially be helpful to improve the precision in the case of the static multicollector system also.
authors.affiliation: Applied Chemistry Laboratories, PINSTECH, P.O. Nilore, Islamabad, Pakistan. erehman@gmail.com
authors.forename: Ejaz
authors.initials: E
authors.lastname: ur Rehman
authors.forename: Riffat
authors.initials: R
authors.lastname: Naheed
authors.forename: Shakeel
authors.initials: S
authors.lastname: ur Rehman