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Computer generation of process explanations in nuclear astrophysics

✍ Scribed by SAKIR KOCABAS; PAT LANGLEY

Publisher
Elsevier Science
Year
2000
Tongue
English
Weight
151 KB
Volume
53
Category
Article
ISSN
1071-5819

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✦ Synopsis

In this paper we describe ASTRA, a computational aid for generating process explanations in nuclear astrophysics. The system operates in two stages, the "rst using knowledge of quantum theory to produce a set of legal reactions among elements and the second searching for pathways of such reactions that explain the construction of some element from lighter ones. ASTRA has found apparently novel reactions that involve proton and neutron capture, as well as novel fusion reactions that produce neutrons and deuterium. The system has also generated reaction pathways for helium, carbon and oxygen that do not appear in the scienti"c literature. However, ASTRA also "nds many other reaction pathways that are less interesting and that suggest priorities for future research.

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