Shape coexistence at the proton drip-line: First identification of excited states in {sup 180}Pb

Journal Article · Thu Jul 15 00:00:00 EDT 2010 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.82.011303· OSTI ID:21389165

Rahkila, P; Greenlees, P T; Jakobsson, U; Jones, P; Julin, R; Juutinen, S; Ketelhut, S; Koivisto, H; Leino, M; Nieminen, P; Nyman, M; Peura, P; Ropponen, T; Ruotsalainen, P; Saren, J; Scholey, C; Sorri, J; Uusitalo, J ^[1]; Jenkins, D G; Roberts, O J ^[2]

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1. Department of Physics, University of Jyvaeskylae, FIN-40014 Jyvaeskylae (Finland)
2. Department of Physics, University of York, Heslington, York YO10 5DD (United Kingdom)

Excited states in the extremely neutron-deficient nucleus {sup 180}Pb have been identified for the first time using the JUROGAM II array in conjunction with the RITU recoil separator at the Accelerator Laboratory of the University of Jyvaeskylae. This study lies at the limit of what is presently achievable with in-beam spectroscopy, with an estimated cross section of only 10 nb for the {sup 92}Mo({sup 90}Zr,2n){sup 180}Pb reaction. A continuation of the trend observed in {sup 182}Pb and {sup 184}Pb is seen, where the prolate minimum continues to rise beyond the N=104 midshell with respect to the spherical ground state. Beyond-mean-field calculations are in reasonable correspondence with the trends deduced from experiment.

• OSTI ID: 21389165
• Journal Information: Physical Review. C, Nuclear Physics, Vol. 82, Issue 1; Other Information: DOI: 10.1103/PhysRevC.82.011303; (c) 2010 The American Physical Society; ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ACCELERATORS
CROSS SECTIONS
EDUCATIONAL FACILITIES
EXCITED STATES
GROUND STATES
IN-BEAM SPECTROSCOPY
LEAD 180
LEAD 182
LEAD 184
MEAN-FIELD THEORY
MOLYBDENUM 92 TARGET
NEUTRON EMISSION
NEUTRON-DEFICIENT ISOTOPES
PROTONS
RECOILS
SPHERICAL CONFIGURATION
ZIRCONIUM 90 REACTIONS
ALPHA DECAY RADIOISOTOPES
BARYONS
CONFIGURATION
ELEMENTARY PARTICLES
EMISSION
ENERGY LEVELS
EVEN-EVEN NUCLEI
FERMIONS
HADRONS
HEAVY ION REACTIONS
HEAVY NUCLEI
INTERMEDIATE MASS NUCLEI
ISOTOPES
LEAD ISOTOPES
MILLISECONDS LIVING RADIOISOTOPES
NUCLEAR REACTIONS
NUCLEI
NUCLEONS
RADIOISOTOPES
SPECTROSCOPY
TARGETS