A RIS-TOF instrument for the measurement of ultratrace quantities of uranium and plutonium.

AW McMahon, JD Gilmour, MB Hernandez, M Rateitzak

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

A RIS-TOF MS instrument with a modified Wiley-McLaren ion source is described. Samples are loaded onto a rhenium filament from which they are vaporised, followed by single color, three photon ionization. The instrument incorporates a Nd:YAG pumped dye laser. Two major limitations of such a design lie firstly in the chemistry of the ion source which yield both atomic and molecular species, the latter represents a signal loss or even an interference. The second limitation arises from the combination of a low duty cycle ionization laser (8 ns pulse width at 10 Hz) with a continuous atom source. Uranium has been ionized using the single-color (591.54 nm) scheme described by Donohue et al. (1) The relative merits of different filament preparation schemes are discussed and a technique is proposed that addresses sample losses due to the low duty cycle of the 10 Hz laser.
Original languageUndefined
Title of host publicationRESONANCE IONIZATION SPECTROSCOPY
EditorsJC Vickerman, I Lyon, NP Lockyer, JE Parks
Pages269-274
Number of pages6
Volume454
DOIs
Publication statusPublished - 1998

Publication series

NameAIP CONFERENCE PROCEEDINGS

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