High-spin states and isomers in the one-proton-hole and three-neutron-hole {sup 204}Tl isotope

Journal Article · Fri Jul 15 00:00:00 EDT 2011 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.84.014330· OSTI ID:21596576

Broda, R; Maier, K H; Fornal, B; Wrzesinski, J; Szpak, B; Krolas, W; Pawlat, T ^[1]; Carpenter, M P; Janssens, R V. F.; Zhu, S ^[2]

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1. H. Niewodniczanski Institute of Nuclear Physics PAN, PL-31342 Krakow (Poland)
2. Physics Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States)

The high-spin structure of the neutron-rich {sup 204}Tl isotope has been studied up to a 11.2-MeV excitation energy and a I=30 spin range using the deep-inelastic heavy-ion {gamma}-spectroscopy method with reactions of {sup 48}Ca on thick {sup 208}Pb and {sup 238}U targets. The established structure of yrast levels involves four isomeric states up to I{sup {pi}=}22{sup -}, the highest spin state available for the maximally aligned four valence holes. The observations are interpreted and quantitatively confirmed by shell-model calculations. The rates of the identified M2 and E3 isomeric decays are discussed and a striking analogy is found for the yrast level structures and {gamma} decays observed in the 18{sup +} to 22{sup -} and 45/2{sup -} to 53/2{sup +} spin ranges in {sup 204}Tl and {sup 203}Hg, respectively. In the highest spin part of the scheme, two prominently populated yrast states are tentatively identified as the 3{sup -} {sup 208}Pb core excitation built on the 22{sup -} and 20{sup +} maximally aligned four-hole states. Their energies are reproduced well by using energy shifts observed in experiments for the {sup 208}Pb core octupole excitation coupled to simpler intrinsic structures.

• OSTI ID: 21596576
• Journal Information: Physical Review. C, Nuclear Physics, Vol. 84, Issue 1; Other Information: DOI: 10.1103/PhysRevC.84.014330; (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
CALCIUM 48 REACTIONS
DEEP INELASTIC SCATTERING
EXCITATION
GAMMA DECAY
GAMMA DETECTION
HEAVY IONS
HIGH SPIN STATES
ISOMERS
LEAD 208 TARGET
MERCURY 203
MEV RANGE 10-100
NEUTRON-RICH ISOTOPES
NEUTRONS
OCTUPOLES
PROTONS
SHELL MODELS
SPECTROSCOPY
SPIN
THALLIUM 204
URANIUM 238 TARGET
YRAST STATES
ANGULAR MOMENTUM
BARYONS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CHARGED PARTICLES
DAYS LIVING RADIOISOTOPES
DECAY
DETECTION
ELECTRON CAPTURE RADIOISOTOPES
ELEMENTARY PARTICLES
ENERGY LEVELS
ENERGY RANGE
ENERGY-LEVEL TRANSITIONS
EVEN-ODD NUCLEI
FERMIONS
HADRONS
HEAVY ION REACTIONS
HEAVY NUCLEI
INELASTIC SCATTERING
INTERACTIONS
IONS
ISOTOPES
LEPTON-BARYON INTERACTIONS
LEPTON-HADRON INTERACTIONS
LEPTON-NUCLEON INTERACTIONS
MATHEMATICAL MODELS
MERCURY ISOTOPES
MEV RANGE
MULTIPOLES
NUCLEAR DECAY
NUCLEAR MODELS
NUCLEAR REACTIONS
NUCLEI
NUCLEONS
ODD-ODD NUCLEI
PARTICLE INTERACTIONS
PARTICLE PROPERTIES
RADIATION DETECTION
RADIOISOTOPES
SCATTERING
TARGETS
THALLIUM ISOTOPES
YEARS LIVING RADIOISOTOPES