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Nuclear clustering and the electron screening puzzle

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arxiv 1710.03388 v1 pith:PCJ5M6TS submitted 2017-10-10 nucl-th nucl-ex

Nuclear clustering and the electron screening puzzle

classification nucl-th nucl-ex
keywords screeningelectronnuclearreactionsmodelspuzzletheoreticalwere
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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Electron screening changes appreciably the magnitude of astrophysical nuclear reactions within stars. This effect is also observed in laboratory experiments on Earth, where atomic electrons are present in the nuclear targets. Theoretical models were developed over the past 30 years and experimental measurements have been carried out to study electron screening in thermonuclear reactions. None of the theoretical models were able to explain the high values of the experimentally determined screening potentials. We explore the possibility that the "electron screening puzzle" is due to nuclear clusterization and polarization effects in the fusion reactions. We will discuss the supporting arguments for this scenario.

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