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Chemical History with a Nuclear Microprobe

Maggiore, C. J. and Benjamin, T. M. and Hyde, P. J. and Rogers, P. S. Z. and Srinivasan, S. and Tesmer, J. and Woolum, D. S. and Burnett, D. S. (1983) Chemical History with a Nuclear Microprobe. IEEE Transactions on Nuclear Science, 30 (2). pp. 1224-1227. ISSN 0018-9499. doi:10.1109/TNS.1983.4332494.

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A nuclear microprobe cannot give direct information on the chemical state of an element, but the spatial distribution of elements in a specimen is often determined by the chemical history of the sample. Fuel cells and minerals are examples of complex systems whose elemental distributions are determined by past chemical history. The distribution of catalyst in used fuel cell electrodes provides direct information on the chemical stability of dispersed catalysts under operating conditions. We have used spatially resolved Rutherford backscattering to measure the migration of platinum and vanadium from intermetallic catalysts and to determine their suitability for use under the extreme operating conditions found in phosphoric acid fuel cells. Geologic materials are complex, heterogeneous samples with small mineral grains. The trace element distribution within the individual mineral grains and between different mineral phases is sensitive to the details of the mineral formation and history. The spatial resolution and sub-100-ppm sensitivity available with a nuclear microprobe open up several new classes of experiments to the geochemist. Geochemistry and electrochemistry are two areas proving particularly fruitful for application of the nuclear microprobe.

Item Type:Article
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URLURL TypeDescription DOIArticle
Burnett, D. S.0000-0001-9521-8675
Additional Information:© 1983 IEEE. The authors wish to acknowledge the help and support of the Laboratory's Van de Graaff group. This work was supported by the United States Department of Energy.
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Department of Energy (DOE)UNSPECIFIED
Issue or Number:2
Record Number:CaltechAUTHORS:20150424-103241147
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Official Citation:Maggiore, C.J.; Benjamin, T.M.; Hyde, P.J.; Rogers, P.S.Z.; Srinivasan, S.; Tesmer, J.; Woolum, D.S.; Burnett, D.S., "Chemical History with a Nuclear Microprobe," Nuclear Science, IEEE Transactions on , vol.30, no.2, pp.1224,1227, April 1983 doi: 10.1109/TNS.1983.4332494 URL:
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:56950
Deposited By: Tony Diaz
Deposited On:24 Apr 2015 19:43
Last Modified:10 Nov 2021 21:05

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