Nuclear structure of the spin-isospin excited states in 13N studied via the (3He,t) and (3He,tp) reactions at 450 MeV
Creators
- 1. Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047 (Japan)
- 2. Department of Physics, Konan University, Kobe, Hyogo 658-8501 (Japan)
- 3. Advanced Photon Research Center, Japan Atomic Energy Research Institute, Kizu, Kyoto 619-0215 (Japan)
- 4. Advanced Science Research Center, Japan Atomic Energy Research Institute, Tokai, Ibaraki 319-1195 (Japan)
- 5. Kernfysisch Versneller Instituut, NL-9747 AA Groningen (Netherlands)
- 6. Department of Physics, Kyoto University, Kyoto 606-8502 (Japan)
- 7. Center for Nuclear Study, Graduate School of Science, University of Tokyo, Bunkyo, Tokyo 113-0033 (Japan)
- 8. Department of Physics, University of Tokyo, Hongo, Tokyo 113-0033 (Japan)
- 9. Kobe Tokiwa Junior College, Nagataku, Kobe 653-0838 (Japan)
- 10. Japan Synchrotron Radiation Research Institute, Hyogo 679-5198 (Japan)
Description
Spin-isospin excitations in 13N have been studied by means of the (3He,t) and (3He,tp) reactions at a bombarding energy of E(3He)=450 MeV. The zero-degree (3He,t) spectrum is found to be similar to those from the (p,n) reactions at intermediate energies, suggesting a simple direct reaction mechanism at E(3He)=450 MeV. The Gamow-Teller (GT) states with Jπ=1/2- and 3/2- have been strongly excited at θlab=0 deg. The angular distribution of cross sections for the 13C(3He,t)13N reaction and the elastic 3He scattering off 13C were obtained at θlab=0 deg. -17 deg. and at θlab=2 deg. -22 deg., respectively. The obtained experimental results were compared with calculations performed in distorted-wave Born approximation. Microscopic structures of the states in 13N have further been studied by observing decay protons in coincidence with high-energy tritons measured at θlab=0 deg. The branching ratios for proton decay from the GT states in 13N to the final low-lying T=0 states in 12C were obtained. The wave functions of the excited states in 13N are discussed on the basis of obtained experimental data and relevant theoretical calculations
Additional details
Identifiers
Publishing Information
- Journal Title
- Physical Review. C, Nuclear Physics
- Journal Volume
- 69
- Journal Issue
- 6
- Journal Page Range
- p. 064327-064327.11
- ISSN
- 0556-2813
- CODEN
- PRVCAN
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 36025781
- Subject category
- S73: NUCLEAR PHYSICS AND RADIATION PHYSICS; S46: INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY;
- Descriptors DEI
- ANGULAR DISTRIBUTION; BRANCHING RATIO; CARBON 12; CARBON 13; CARBON 13 TARGET; COMPARATIVE EVALUATIONS; CROSS SECTIONS; DIRECT REACTIONS; DWBA; ELASTIC SCATTERING; ENERGY SPECTRA; EXCITATION; EXCITED STATES; GAMOW-TELLER RULES; HELIUM 3 REACTIONS; ISOSPIN; MEV RANGE; NITROGEN 13; NUCLEAR DECAY; NUCLEAR STRUCTURE; PROTONS; SPIN; TRITONS; WAVE FUNCTIONS
- Descriptors DEC
- ANGULAR MOMENTUM; BARYONS; BETA DECAY RADIOISOTOPES; BETA-PLUS DECAY RADIOISOTOPES; BORN APPROXIMATION; CARBON ISOTOPES; CHARGED PARTICLES; CHARGED-PARTICLE REACTIONS; DECAY; DISTRIBUTION; ELECTRON CAPTURE RADIOISOTOPES; ELEMENTARY PARTICLES; ENERGY LEVELS; ENERGY RANGE; ENERGY-LEVEL TRANSITIONS; EVALUATION; EVEN-EVEN NUCLEI; EVEN-ODD NUCLEI; FERMIONS; FUNCTIONS; HADRONS; ISOTOPES; LIGHT NUCLEI; MINUTES LIVING RADIOISOTOPES; NITROGEN ISOTOPES; NUCLEAR REACTIONS; NUCLEI; NUCLEONS; ODD-EVEN NUCLEI; PARTICLE PROPERTIES; RADIOISOTOPES; SCATTERING; SPECTRA; STABLE ISOTOPES; TARGETS
Optional Information
- Notes
- (c) 2004 The American Physical Society