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Science 28 January 1983:
Vol. 219. no. 4583, pp. 383 - 384
DOI: 10.1126/science.219.4583.383
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Articles

Computed Tomographic Analysis of Meteorite Inclusions

J. R. ARNOLD 1, J. P. TESTA JR. 1, P. J. FRIEDMAN 2, and G. X. KAMBIC 3

1 Department of Chemistry, University of California, San Diego, La Jolla 92093
2 Department of Radiology, School of Medicine, University of California, San Diego
3 Technicare Corporation, Cleveland, Ohio 44101

The discovery of isotopic anomalies in the calcium- and aluminum-rich inclusions of the Allende meteorite has improved our knowledge of the origin of the solar system. Inability to find more inclusions without destroying the meteorite has hampered further study. By using a fourth-generation computed tomographic scanner with modifications to the software only, the interior of heterogeneous materials such as Allende can be nondestructively probed. The regions of material with high and low atomic numbers are displayed quickly. The object can then be cut to obtain for analysis just the areas of interest.

Submitted on April 6, 1982


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