Published April 2005 | Version v1
Journal article Metadata-only

Observation of negative-parity high-spin states of 68As

Creators

  • 1. BAS, Institute for Nuclear Research and Nuclear Energy, Sofia (Bulgaria)
  • 2. Universitaet Goettingen, II. Physikalisches Institut, Goettingen (Germany)
  • 3. Horia-Hulubei National Institute for Physics and Nuclear Engineering, P.O. Box MG-6, Bucharest (Romania)
  • 4. Universitaet zu Koeln, Institut fuer Kernphysik, Koeln (Germany)
  • 5. INFN, Laboratori Nazionali di Legnaro, Legnaro (Padova) (Italy)
  • 6. CNRS-IN2P3, Institut de Recherches Subatomiques, Strasbourg (France)
  • 7. INFN, Sezione di Padova, Padova (Italy)
  • 8. Universidad Autonoma de Madrid, Departamento de Fisica Teorica, Madrid (Spain)
  • 9. Consejo Superior de Investigaciones Cientificas, Instituto de Estructura de la Materia, Madrid (Spain)
  • 10. FZ Rossendorf, Institut fuer Kern- und Hadronenphysik, Dresden (Germany)
  • 11. Royal Institute of Technology, Department of Physics, Stockholm (Sweden)

Description

The neutron-deficient nucleus 68As was populated at high spin in two experiments using the reaction 40Ca(32S,3pn) at beam energies of 105 and 95 MeV. A self-supporting and a gold-backed, highly enriched 40Ca target were used. Gamma rays were detected with the EUROBALL array, combined with the charged-particle detector array EUCLIDES and the Neutron Wall. The 68As level scheme was considerably extended, especially at negative parity and many previous spin-parity assignments were confirmed or rejected. The total-Routhian-surface (TRS) calculations find shape coexistence and γ softness for the negative- and positive-parity states, respectively. (orig.)

Availability note (English)

Available from: http://dx.doi.org/10.1140/epja/i2004-10126-5

Additional details

Identifiers

DOI
10.1140/epja/i2004-10126-5;

Publishing Information

Journal Title
European Physical Journal. A
Journal Volume
24
Journal Issue
1
Journal Page Range
p. L1-L4
ISSN
1434-6001

INIS

Country of Publication
Germany
Country of Input or Organization
Germany
INIS RN
36050621
Subject category
S73: NUCLEAR PHYSICS AND RADIATION PHYSICS;
Resource subtype / Literary indicator
Numerical Data
Descriptors DEI
ARSENIC 68; CALCIUM 40 TARGET; DE-EXCITATION; ENERGY SPECTRA; EXPERIMENTAL DATA; GAMMA CASCADES; GAMMA SPECTRA; HEAVY ION FUSION REACTIONS; HIGH SPIN STATES; MEV RANGE 10-100; MEV RANGE 100-1000; MULTIPOLARITY; NEUTRONS; PARITY; PROTONS; ROTATIONAL STATES; SPIN; SULFUR 32 REACTIONS
Descriptors DEC
ANGULAR MOMENTUM; ARSENIC ISOTOPES; BARYONS; BETA DECAY RADIOISOTOPES; BETA-PLUS DECAY RADIOISOTOPES; DATA; ELEMENTARY PARTICLES; ENERGY LEVELS; ENERGY RANGE; ENERGY-LEVEL TRANSITIONS; EXCITED STATES; FERMIONS; HADRONS; HEAVY ION REACTIONS; INFORMATION; INTERMEDIATE MASS NUCLEI; ISOTOPES; MEV RANGE; MINUTES LIVING RADIOISOTOPES; NUCLEAR CASCADES; NUCLEAR REACTIONS; NUCLEI; NUCLEONS; NUCLEOSYNTHESIS; NUMERICAL DATA; ODD-ODD NUCLEI; PARTICLE PROPERTIES; RADIOISOTOPES; SPECTRA; SYNTHESIS; TARGETS