Spectroscopy of 123La and configuration dependent proton pairing
Creators
- 1. Royal Inst. of Tech., Stockholm (Sweden). Dept. of Physics
- 2. Manne Siegbahn Inst. of Physics, Stockholm (Sweden)
- 3. Science and Engineering Research Council, Daresbury (UK). Daresbury Lab.
- 4. Liverpool Univ. (UK). Oliver Lodge Lab.
- 5. Lund Inst. of Tech. (Sweden). Dept. of Mathematical Physics
Description
Excited states in 123La have been established for the first time using γ-ray spectroscopy, thus extending the systematics of lanthanum isotopes further out from the line of β-stability. Bands built on the Nilsson orbitals [404]9/2, [550]1/2, and most likely also [422]3/2 are observed. In the last two cases only the favoured signature is seen, while in the first case both signatures are observed in a strongly coupled band. States in 123La are observed up to a maximum spin of tentatively 59/2. The configuration dependence of the first band crossing frequency indicates the presence of higher-order terms in the proton pairing. According to calculations, deformation effects are not sufficient to reproduce the observed shift in crossing frequencies. (orig.)
Additional details
Publishing Information
- Journal Title
- Nuclear Physics, A
- Journal Volume
- 503
- Journal Issue
- 1
- Series
- Nucl. Phys., A.
- Journal Page Range
- 244-262
- ISSN
- 0375-9474
- CODEN
- NUPAB
INIS
- Country of Publication
- Netherlands
- Country of Input or Organization
- Netherlands
- INIS RN
- 21013121
- Subject category
- S73: NUCLEAR PHYSICS AND RADIATION PHYSICS;
- Resource subtype / Literary indicator
- Numerical Data
- Descriptors DEI
- ANGULAR CORRELATION; ANGULAR DISTRIBUTION; BACKBENDING; CHROMIUM 52 TARGET; DE-EXCITATION; ENERGY SPECTRA; EXPERIMENTAL DATA; E2-TRANSITIONS; GAMMA CASCADES; GAMMA SPECTRA; HEAVY ION FUSION REACTIONS; HIGH SPIN STATES; LANTHANUM 123; MEV RANGE 100-1000; MOLYBDENUM 92 TARGET; MULTIPOLARITY; M1-TRANSITIONS; NEUTRONS; NUCLEAR ALIGNMENT; NUCLEAR DEFORMATION; NUCLEAR STRUCTURE; PAIRING INTERACTIONS; PARITY; PHOTONS; POLARIZATION-ASYMMETRY RATIO; POLARIZED PRODUCTS; PROTONS; ROTATIONAL STATES; SPIN; SULFUR 34 REACTIONS
- Descriptors DEC
- ANGULAR MOMENTUM; BARYONS; BETA DECAY RADIOISOTOPES; BOSONS; CATIONS; CHARGED PARTICLES; CORRELATIONS; DATA; DEFORMATION; DISTRIBUTION; ELECTRON CAPTURE RADIOISOTOPES; ELEMENTARY PARTICLES; ENERGY LEVELS; ENERGY RANGE; ENERGY-LEVEL TRANSITIONS; EXCITED STATES; FERMIONS; HADRONS; HEAVY ION REACTIONS; HYDROGEN IONS; HYDROGEN IONS 1 PLUS; INFORMATION; INTERACTIONS; INTERMEDIATE MASS NUCLEI; IONS; ISOTOPES; LANTHANUM ISOTOPES; MASSLESS PARTICLES; MEV RANGE; MULTIPOLE TRANSITIONS; NUCLEAR CASCADES; NUCLEAR REACTIONS; NUCLEI; NUCLEONS; NUCLEOSYNTHESIS; NUMERICAL DATA; ODD-EVEN NUCLEI; PARTICLE PROPERTIES; RADIOISOTOPES; RARE EARTH NUCLEI; SECONDS LIVING RADIOISOTOPES; SPECTRA; SYNTHESIS; TARGETS