Study of the pionic enhancement in O16(p,p')O16(0-,T=1) at 295 MeV
Creators
- 1. Department of Physics, Kyushu University, Fukuoka 812-8581 (Japan)
- 2. Kernfysisch Versneller Instituut, Zernikelaan 25, 9747 AA Groningen (Netherlands)
- 3. Department of Physics, Kyoto University, Kyoto 606-8502 (Japan)
- 4. Research Center for Nuclear Physics, Osaka University, Osaka 567-0047 (Japan)
- 5. Faculty of Computer and Information Sciences, Hosei University, Tokyo 184-8584 (Japan)
- 6. Cyclotron and Radioisotope Center, Tohoku University, Miyagi 980-8578 (Japan)
- 7. Accelerator Group, Japan Atomic Energy Research Institute, Ibaraki 319-1195 (Japan)
- 8. Center for Nuclear Study, The University of Tokyo, Tokyo 113-0033 (Japan)
- 9. The Institute of Physical and Chemical Research, Saitama 351-0198 (Japan)
- 10. Department of Physics, Tokyo Institute of Technology, Tokyo 152-8550 (Japan)
- 11. Research and Development Center for Higher Education, Kyushu University, Fukuoka 810-8560 (Japan)
Description
The cross section of the O16(p,p')O16(0-,T=1) scattering was measured at a bombarding energy of 295 MeV in the momentum transfer range of 1.0fm-1=<qc.m.=<2.1fm-1. The isovector 0- state at Ex=12.8MeV is clearly separated from its neighboring states owing to the high energy resolution of about 30 keV. The cross section data were compared with distorted wave impulse approximation (DWIA) calculations employing shell-model wave functions. The observed cross sections around qc.m.∼1.7fm-1 are significantly larger than obtained by these calculations, suggesting pionic enhancement as a precursor of pion condensation in nuclei. The data are well reproduced by DWIA calculations using random phase approximation response functions including the Δ isobar that predict pionic enhancement
Additional details
Identifiers
- DOI
- 10.1016/j.physletb.2005.11.009;
- PII
- S0370-2693(05)01620-5;
Publishing Information
- Journal Title
- Physics Letters. Section B
- Journal Volume
- 632
- Journal Issue
- 4
- Journal Page Range
- p. 485-489
- ISSN
- 0370-2693
- CODEN
- PYLBAJ
INIS
- Country of Publication
- Netherlands
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 38019676
- Subject category
- S73: NUCLEAR PHYSICS AND RADIATION PHYSICS;
- Descriptors DEI
- CROSS SECTIONS; DISTORTED WAVE THEORY; ENERGY RESOLUTION; IMPULSE APPROXIMATION; ISOVECTORS; KEV RANGE 10-100; MEV RANGE 100-1000; MOMENTUM TRANSFER; OXYGEN 16; OXYGEN 16 TARGET; PION CONDENSATION; PROTON REACTIONS; RANDOM PHASE APPROXIMATION; RESPONSE FUNCTIONS; SHELL MODELS; SPIN; WAVE FUNCTIONS
- Descriptors DEC
- ANGULAR MOMENTUM; APPROXIMATIONS; BARYON REACTIONS; CALCULATION METHODS; CHARGED-PARTICLE REACTIONS; ENERGY RANGE; EVEN-EVEN NUCLEI; FUNCTIONS; HADRON REACTIONS; ISOTOPES; KEV RANGE; LIGHT NUCLEI; MATHEMATICAL MODELS; MEV RANGE; NUCLEAR MODELS; NUCLEAR REACTIONS; NUCLEI; NUCLEON REACTIONS; OXYGEN ISOTOPES; PARTICLE PROPERTIES; RESOLUTION; STABLE ISOTOPES; TARGETS; TENSORS; VECTORS
Optional Information
- Copyright
- Copyright (c) 2005 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.