Nucleon polarization in three-body models of polarized [sup 6]Li

Journal Article · Wed Dec 01 04:00:00 EST 1993 · Physical Review, C (Nuclear Physics); (United States)

DOI:https://doi.org/10.1103/PhysRevC.48.2714· OSTI ID:5802339

Schellingerhout, N W; Kok, L P ^[1]; Coon, S A ^[2]; Adam, R M ^[3]

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1. Institute for Theoretical Physics, University of Groningen, Nijenborgh 4, NL-9747 AG Groningen (Netherlands)
2. Department of Physics, New Mexico State University, Las Cruces, New Mexico 88003 (United States)
3. Department of Physics and Astronomy, Vrije Universiteit, De Boelelaan 1081, NL-1081 HV Amsterdam (Netherlands)

Just as [sup 3]H[rvec e] can be approximately characterized as a polarized neutron target, polarized [sup 6]LiD has been advocated as a good [ital isoscalar] nuclear target for the extraction of the polarized gluon content of the nucleon. The original argument rests upon a presumed alpha + deuteron'' picture of [sup 6]Li, with the polarization of the nucleus carried by the polarization of the deuteron. We have calculated the polarization of the constituents of [sup 6]Li as a three-body bound state of [alpha]+[ital n]+[ital p] interacting with local potentials fitted to the scattering data. It is necessary to include partial waves up to [ital j]=17/2 (75 channels, or, when including the [ital T]=1 state, 150 channels) in the Faddeev equations before the energy eigenvalue converges. The longitudinal form factors are then described well by the wave function. Various combinations of [alpha][ital N] and [ital NN] strong and Coulomb potentials yield a straight line in the charge radius vs energy plane which, unlike those of previous calculations, passes through the experimental datum. We find for all cases a polarization of the valence neutron in excess of 90%. This may make polarized [sup 6]LiD an attractive target for many nuclear physics purposes, since its neutrons are effectively 45% polarized.

• OSTI ID: 5802339
• Journal Information: Physical Review, C (Nuclear Physics); (United States), Journal Name: Physical Review, C (Nuclear Physics); (United States) Vol. 48:6; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

663120* -- Nuclear Structure Models & Methods-- (1992-)
663520 -- Nuclear Mass Ranges-- A=6-19-- (1992-)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALKALI METAL ISOTOPES
BARYONS
BOUND STATE
CLUSTER MODEL
ELEMENTARY PARTICLES
FERMIONS
FORM FACTORS
HADRONS
ISOTOPES
LIGHT NUCLEI
LITHIUM 6
LITHIUM ISOTOPES
MANY-BODY PROBLEM
MATHEMATICAL MODELS
NUCLEAR MODELS
NUCLEI
NUCLEONS
ODD-ODD NUCLEI
PARTICLE PROPERTIES
POLARIZATION
POLARIZED TARGETS
STABLE ISOTOPES
TARGETS
THREE-BODY PROBLEM