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Subject Keyword PHYSICS ♦ POLONIUM ISOTOPES ♦ DEFORMATION ♦ ALPHA DECAY ♦ ASTATINE ♦ BETA DECAY ♦ EVEN-EVEN NUCLEI ♦ EXCITATION ♦ GROUND STATES ♦ MASS ♦ MIXING ♦ NEUTRON-DEFICIENT ISOTOPES ♦ PROTONS ♦ RADON
Abstract Alpha- and beta-decay studies of mass-separated Rn and At nuclei reveal the existence of a low-lying 0{sup +} state in {sup 196,198,200,202}Po. The excited 0{sup +} states are interpreted as proton-pair excitations across the {ital Z}=82 shell gap leading to a deformed state, coexisting with the spherical ground state. It is shown that with decreasing neutron number the deformed configuration intrudes to lower excitation energy, increasingly mixing into the ground state. {copyright} {ital 1995 The American Physical Society.}
ISSN 00319007
Educational Use Research
Learning Resource Type Article
Publisher Date 1995-12-01
Publisher Place United States
Journal Physical Review Letters
Volume Number 75
Issue Number 25


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