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

Abstract

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.

Authors:
 [1];  [2];  [3];  [4];  [5]
  1. General Education, Faculty of Engineering, Osaka Institute of Technology, Osaka, Osaka 535-8585 (Japan)
  2. (RCNP), Osaka University, Ibaraki, Osaka 567-0047 (Japan)
  3. Human Science and Common Education, Faculty of Engineering, Nippon Institute of Technology, Saitama 345-8501 (Japan)
  4. Research Center for Nuclear Physics (RCNP), Osaka University, Ibaraki, Osaka 567-0047 (Japan)
  5. RIKEN Nishina Center, Wako, Saitama 351-0198 (Japan)
Publication Date:
OSTI Identifier:
21596746
Resource Type:
Journal Article
Journal Name:
Physical Review. C, Nuclear Physics
Additional Journal Information:
Journal Volume: 84; Journal Issue: 3; Other Information: DOI: 10.1103/PhysRevC.84.034315; (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0556-2813
Country of Publication:
United States
Language:
English
Subject:
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

Citation Formats

Myo, Takayuki, Research Center for Nuclear Physics, Umeya, Atsushi, Toki, Hiroshi, and Ikeda, Kiyomi. Role of the tensor interaction in He isotopes with a tensor-optimized shell model. United States: N. p., 2011. Web. doi:10.1103/PHYSREVC.84.034315.
Myo, Takayuki, Research Center for Nuclear Physics, Umeya, Atsushi, Toki, Hiroshi, & Ikeda, Kiyomi. Role of the tensor interaction in He isotopes with a tensor-optimized shell model. United States. doi:10.1103/PHYSREVC.84.034315.
Myo, Takayuki, Research Center for Nuclear Physics, Umeya, Atsushi, Toki, Hiroshi, and Ikeda, Kiyomi. Thu . "Role of the tensor interaction in He isotopes with a tensor-optimized shell model". United States. doi:10.1103/PHYSREVC.84.034315.
@article{osti_21596746,
title = {Role of the tensor interaction in He isotopes with a tensor-optimized shell model},
author = {Myo, Takayuki and Research Center for Nuclear Physics and Umeya, Atsushi and Toki, Hiroshi and Ikeda, Kiyomi},
abstractNote = {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.},
doi = {10.1103/PHYSREVC.84.034315},
journal = {Physical Review. C, Nuclear Physics},
issn = {0556-2813},
number = 3,
volume = 84,
place = {United States},
year = {2011},
month = {9}
}