Probing nuclear shapes close to the fission limit with the giant dipole resonance in 216Rn
Creators
- 1. Niewodniczanski Institute of Nuclear Physics, Polish Academy of Sciences, ul. Radzikowskiego 152, 31-342 Cracow (Poland)
- 2. Dipartimento di Fisica, Universita di Milano and INFN Sez. Milano, Via Celoria 16, 20133 Milan (Italy)
- 3. Niels Bohr Institute, Blegdamsvej 15-17, 2100 Copenhagen (Denmark)
- 4. Institute of Experimental Physics, Warsaw University, Warsaw (Poland)
- 5. Institut de Recherches Subatomiques and Louis Pasteur University, 23 rue du Loess, BP28 F-67037, Strasbourg Cedex 2 (France)
- 6. Department of Physics, 30BC04, University of Surrey, Guildford GU2 1XH (United Kingdom)
Description
The gamma-ray decay of the giant dipole resonance (GDR) in the compound nucleus 216Rn formed with the reaction 18O+198Pt at the bombarding energy of 96 MeV was investigated. High-energy gamma-ray spectra in coincidence with both prompt and delayed low-energy transitions were measured. The obtained GDR width at the average temperature ≅1 MeV was found to be larger than that at T=0 MeV and to be approximately constant as a function of spin. The measured width value of 7 MeV is found to be consistent with the predictions based on calculations of the nuclear shape distribution using the newest approach for the treatment of the fission barrier within the liquid drop model. The present study is the first investigation of the giant dipole resonance width from the fusion-evaporation decay channel in this nuclear mass range
Additional details
Identifiers
Publishing Information
- Journal Title
- Physical Review. C, Nuclear Physics
- Journal Volume
- 70
- Journal Issue
- 6
- Journal Page Range
- p. 064317-064317.9
- ISSN
- 0556-2813
- CODEN
- PRVCAN
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 37011725
- Subject category
- S73: NUCLEAR PHYSICS AND RADIATION PHYSICS;
- Descriptors DEI
- COMPOUND NUCLEI; DIPOLES; ENERGY-LEVEL TRANSITIONS; EVAPORATION MODEL; FISSION; FISSION BARRIER; GAMMA RADIATION; GAMMA SPECTRA; GIANT RESONANCE; LIQUID DROP MODEL; MEV RANGE; NUCLEAR DECAY; OXYGEN 18 REACTIONS; PLATINUM 198 TARGET; RADON 216; SPIN
- Descriptors DEC
- ALPHA DECAY RADIOISOTOPES; ANGULAR MOMENTUM; DECAY; ELECTROMAGNETIC RADIATION; ENERGY; ENERGY RANGE; EVEN-EVEN NUCLEI; HEAVY ION REACTIONS; HEAVY NUCLEI; IONIZING RADIATIONS; ISOTOPES; MATHEMATICAL MODELS; MICROSECONDS LIVING RADIOISOTOPES; MULTIPOLES; NUCLEAR MODELS; NUCLEAR POTENTIAL; NUCLEAR REACTIONS; NUCLEI; PARTICLE PROPERTIES; POTENTIAL ENERGY; POTENTIALS; RADIATIONS; RADIOISOTOPES; RADON ISOTOPES; RESONANCE; SPECTRA; TARGETS
Optional Information
- Notes
- (c) 2004 The American Physical Society