Role of the tensor interaction in He isotopes with a tensor-optimized shell model

Journal Article · Thu Sep 15 00:00:00 EDT 2011 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.84.034315· OSTI ID:21596746

Myo, Takayuki ^[1]; Umeya, Atsushi ^[2]; Toki, Hiroshi ^[3]; Ikeda, Kiyomi ^[4]

---

1. General Education, Faculty of Engineering, Osaka Institute of Technology, Osaka, Osaka 535-8585 (Japan)
2. Human Science and Common Education, Faculty of Engineering, Nippon Institute of Technology, Saitama 345-8501 (Japan)
3. Research Center for Nuclear Physics (RCNP), Osaka University, Ibaraki, Osaka 567-0047 (Japan)
4. RIKEN Nishina Center, Wako, Saitama 351-0198 (Japan)

We studied the role of the tensor interaction in He isotopes systematically on the basis of the tensor-optimized shell model (TOSM). We use a bare nucleon-nucleon interaction AV8{sup '} obtained from nucleon-nucleon scattering data. The short-range correlation is treated in the unitary correlation operator method (UCOM). Using the TOSM + UCOM approach, we investigate the role of tensor interaction on each spectrum in He isotopes. It is found that the tensor interaction enhances the LS splitting energy observed in {sup 5}He, in which the p{sub 1/2} and p{sub 3/2} orbits play different roles on the tensor correlation. In {sup 6,7,8}He, the low-lying states containing extra neutrons in the p{sub 3/2} orbit gain the tensor contribution. On the other hand, the excited states containing extra neutrons in the p{sub 1/2} orbit lose the tensor contribution due to the Pauli-blocking effect with the 2p2h states in the {sup 4}He core configuration.

• OSTI ID: 21596746
• Journal Information: Physical Review. C, Nuclear Physics, Vol. 84, Issue 3; Other Information: DOI: 10.1103/PhysRevC.84.034315; (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
CHANNELING
CONFIGURATION
CORRELATIONS
EXCITED STATES
HELIUM 4
HELIUM 5
HELIUM 6
HELIUM 7
HELIUM 8
NEUTRONS
NUCLEON-NUCLEON INTERACTIONS
SHELL MODELS
SPECTRA
ALPHA DECAY RADIOISOTOPES
BARYON-BARYON INTERACTIONS
BARYONS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
ELEMENTARY PARTICLES
ENERGY LEVELS
EVEN-EVEN NUCLEI
EVEN-ODD NUCLEI
FERMIONS
HADRON-HADRON INTERACTIONS
HADRONS
HELIUM ISOTOPES
INTERACTIONS
ISOTOPES
LIGHT NUCLEI
MATHEMATICAL MODELS
MILLISECONDS LIVING RADIOISOTOPES
NUCLEAR MODELS
NUCLEI
NUCLEONS
PARTICLE INTERACTIONS
RADIOISOTOPES
STABLE ISOTOPES