A direct measurement of the distribution in depth of 26Al in the Estacado meteorite |
| |
| Authors: | JC Barton AH Watson AG Wright |
| |
| Institution: | School of Applied Physics, The Polytechnic of North London, London N7 8DB, U.K. |
| |
| Abstract: | The two-dimensional distribution of 26Al across a slice of the Estacado meteorite was measured using non-destructive γ-γ coincidence counting. The maximum activity was found to be 60 ± 2 dpm kg?1 and the variation across the slice rather small. The intensity and distribution are in moderate agreement with existing theoretical models if the pre-atmospheric shape of the meteorite had been a sphere of radius 0.35 ± 0.05 m, but it was more likely to have been slightly non-spherical. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
