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Subject Keyword PHYSICS ♦ ASTATINE ISOTOPES ♦ ALPHA DECAY ♦ RADON ISOTOPES ♦ ALPHA PARTICLES ♦ ANGULAR DISTRIBUTION ♦ NUCLEAR STRUCTURE ♦ ORIENTATION ♦ NEUTRON-DEFICIENT ISOTOPES ♦ ANISOTROPY ♦ SHELL MODELS
Abstract We report on an extensive on-line nuclear orientation study of the angular distribution of {alpha} particles emitted in the favored decay of neutron deficient At and Rn nuclei near the {ital N}=126 shell closure. Surprisingly large anisotropies were observed, showing pronounced changes from one isotope to another. Comparing these data with several theoretical models shows that anisotropic {alpha} emission in favored decays from near-spherical nuclei can well be explained within the shell model, implying that it is mainly determined by the structure of the decaying nucleus. {copyright} {ital 1996 The American Physical Society.}
ISSN 00319007
Educational Use Research
Learning Resource Type Article
Publisher Date 1996-12-01
Publisher Place United States
Journal Physical Review Letters
Volume Number 77
Issue Number 23


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