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Análisis computarizado tomográfico de las inclusiones de meteoritos.

J R Arnold, J P Testa, P J Friedman

Science (New York, N.Y.)

|January 28, 1983

Resumen

La tomografía computarizada explora de manera no destructiva el interior del meteorito de Allende, revelando regiones de alto y bajo número atómico. Esto permite un análisis específico de las inclusiones ricas en calcio y aluminio, avanzando en los estudios de origen del sistema solar.

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Área de la Ciencia:

Cosmoquímica es la cosmoquímica.
Ciencias planetarias Ciencias planetarias.
La geofísica es la geofísica.

Sus antecedentes:

Las anomalías isotópicas en las inclusiones ricas en calcio y aluminio (CAIs) del meteorito de Allende ofrecen información sobre los orígenes del sistema solar.
Los estudios anteriores estaban limitados por la naturaleza destructiva de la recuperación de muestras de meteoritos.
Existía la necesidad de métodos no destructivos para analizar interiores de meteoritos heterogéneos.

Objetivo del estudio:

Desarrollar y aplicar un método no destructivo para analizar el interior del meteorito de Allende.
Para identificar y aislar regiones específicas de interés dentro del meteorito para un mayor análisis isotópico.
Para superar las limitaciones de las técnicas de muestreo destructivo anteriores.

Principales métodos:

Utilizó un escáner de tomografía computarizada (TC) de cuarta generación con modificaciones de software.
Tomografía computarizada aplicada para sondear de manera no destructiva el interior heterogéneo del meteorito de Allende.
Desarrolló el procesamiento de imágenes para diferenciar regiones basadas en el número atómico.

Principales resultados:

Visualizaron con éxito la estructura interior del meteorito de Allende.
Regiones distinguidas con números atómicos altos y bajos rápidamente.
Demostró la capacidad de dirigirse con precisión y aislar inclusiones específicas para el análisis.

Conclusiones:

La tomografía computarizada proporciona un medio eficaz y no destructivo para estudiar el interior de los meteoritos.
Esta técnica facilita la recuperación dirigida de muestras científicamente valiosas, como las CAI.
Los avances en la tomografía computarizada mejoran el estudio de la formación y evolución del sistema solar.