Intruder states and the onset of deformation in the neutron-deficient even-even polonium isotopes

Journal Article · Thu Nov 30 23:00:00 EST 1995 · Physical Review Letters

OSTI ID:277360

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.}

• OSTI ID: 277360
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 25 Vol. 75; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
ALPHA DECAY
ASTATINE
BETA DECAY
DEFORMATION
EVEN-EVEN NUCLEI
EXCITATION
GROUND STATES
MASS
MIXING
NEUTRON-DEFICIENT ISOTOPES
POLONIUM ISOTOPES
PROTONS
RADON