Image icon  Thermal Ionization Mass Spectrometry (TIMS)

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Description: This image shows the Finnigan Triton thermal ionization mass spectrometer (TIMS) in the Nuclear Materials Characterization Department (NMCD). TIMS is used for high precision total and isotopic uranium and plutonium analysis. This instrument has 9 Faraday cups whose positions are automatically set. Each Faraday cup collector can measure signals as large as 50 volts. In this setup sample is deposited on a rhenium ribbon which is placed in a twenty one position turret and inserted into the mass spectrometer ion source. An electric current heats the rhenium ribbon to high temperature, which causes the sample to ionize. The ions are separated from one another based on their mass-to-charge ratio by a magnetic field. The concentrations of uranium and plutonium isotopes are determined using isotope dilution mass spectrometry technique.
Keywords: plutonium • uranium • isoptopes • reactor • radioactive • irradiation • ionization • mass spectroscopy • TIMS • video
Categories: Applications > Energy > Nuclear energy
Testing, analysis & experimentation > Spectroscopy
Created by: Idaho National Laboratory
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Date created: 13 November 2008
Date added: 05 April 2011
Resource ID: 3616