Isospin dependence of {sup 6}He+p optical potential and the symmetry energy

Journal Article · Fri Apr 01 04:00:00 EST 2005 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PhysRevC.71.044601· OSTI ID:20696073

Khoa, Dao T; Than, Hoang Sy ^[1]

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1. Institute for Nuclear Science and Technique, VAEC, P.O. Box 5T-160, Nghia Do, Hanoi (Viet Nam)

A consistent folding analysis of the elastic p({sup 6}He,{sup 6}He)p scattering and charge exchange p({sup 6}He,{sup 6}Li{sup *})n reaction data measured at E{sub lab}=41.6A MeV has been performed within the coupled channels formalism. We have used the isovector coupling to link the isospin dependence of {sup 6}He+p optical potential to the cross section of p({sup 6}He,{sup 6}Li{sup *})n reaction exciting the 0{sup +} isobaric analog state (IAS) at 3.563 MeV in {sup 6}Li. Based on these results and the Hartree-Fock calculation of asymmetric nuclear matter using the same isospin-dependent effective nucleon-nucleon interaction, we were able to confirm that the most realistic value of the symmetry energy E{sub sym} is around 31 MeV. Our analysis has also shown that the measured charge exchange p({sup 6}He,{sup 6}Li{sup *})n data are quite sensitive to the halo tail of the {sup 6}He density used in the folding calculation and the IAS of {sup 6}Li is likely to have a halo structure similar to that established for the ground state of {sup 6}He.

• OSTI ID: 20696073
• Journal Information: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 4 Vol. 71; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ASYMMETRY
CHARGE EXCHANGE
COUPLED CHANNEL THEORY
COUPLING
CROSS SECTIONS
DENSITY
ELASTIC SCATTERING
GROUND STATES
HARTREE-FOCK METHOD
HELIUM 6
HELIUM 6 TARGET
ISOBARIC ANALOGS
ISOSPIN
LITHIUM 6
MEV RANGE
NUCLEAR MATTER
NUCLEAR POTENTIAL
NUCLEON-NUCLEON INTERACTIONS
PROTON REACTIONS
SYMMETRY