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Applicability of prompt gamma ray analysis to the initial analysis of the extraterrestrial materials for chemical composition

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Figure

Table 1. Induced radioactivity (in Bq) for 1 mg of some elements by PGA∗.
Fig. 1. Gamma-ray spectrum of the Allende meteorite. The specimen (48.5 g in a lump) was irradiated for 11465 sec with guided beam of thermal neutrons(flux: 2.4×107 cm−2 s−1) at the PGA facility of JRR-3M reactor, JAERI
Table 3. Effect on isotopic composition by neutron-induced reaction by PGA∗.

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