Ultra-sensitive isotopic analysis by resonance ionization mass spectrometry

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Description

A high-powered pulsed dye laser has been interfaced to a commerical ion microprobe mass analyzer. This combination should provide ultra-high sensitivity for isotope ratio measurements of selected elements in environmental samples. The technique is an outgrowth of resonance ionization mass spectrometry which has demonstrated high precision for isotope ratio determinations of uranium and plutonium using thermal filament atomization. Sputter atomization using a pulsed argon ion beam represents a significant improvement in efficiency because the temporal overlap between the atom cloud and the laser pulse can approach 100%. This, coupled with the high ionization efficiency of laser induced resonance ionization methods, ... continued below

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Pages: 8

Creation Information

Donohue, D.L.; Christie, W.H.; Goeringer, D.E. & McKown, H.S. January 1, 1984.

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Description

A high-powered pulsed dye laser has been interfaced to a commerical ion microprobe mass analyzer. This combination should provide ultra-high sensitivity for isotope ratio measurements of selected elements in environmental samples. The technique is an outgrowth of resonance ionization mass spectrometry which has demonstrated high precision for isotope ratio determinations of uranium and plutonium using thermal filament atomization. Sputter atomization using a pulsed argon ion beam represents a significant improvement in efficiency because the temporal overlap between the atom cloud and the laser pulse can approach 100%. This, coupled with the high ionization efficiency of laser induced resonance ionization methods, promises an analytical sensitivity which is significantly better than other microprobe techniques. A description of the experimental set-up is given along with the modifications to the ion microprobe instrument which were necessary to obtain acceptable ion extraction efficiency. Also shown are results for samarium and uranium demonstrating the optical and mass spectra obtained. 21 refs., 7 figs., 1 tab.

Physical Description

Pages: 8

Notes

NTIS, PC A02/MF A01; 1.

Source

  • International conference on lasers '84, San Francisco, CA, USA, 26 Nov 1984

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  • Other: DE86003252
  • Report No.: CONF-8411153-5
  • Grant Number: AC05-84OR21400
  • Office of Scientific & Technical Information Report Number: 6199621
  • Archival Resource Key: ark:/67531/metadc1107508

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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Creation Date

  • January 1, 1984

Added to The UNT Digital Library

  • Feb. 22, 2018, 7:45 p.m.

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  • March 20, 2018, 8:12 p.m.

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Donohue, D.L.; Christie, W.H.; Goeringer, D.E. & McKown, H.S. Ultra-sensitive isotopic analysis by resonance ionization mass spectrometry, article, January 1, 1984; United States. (digital.library.unt.edu/ark:/67531/metadc1107508/: accessed April 23, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.