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Femtometer toroidal structures in nuclei [electronic resource].

Published
Washington, D.C. : United States. Dept. of Energy. Office of Energy Research, 1996.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description
610 Kilobytes pages : digital, PDF file
Additional Creators
Thomas Jefferson National Accelerator Facility (U.S.), United States. Department of Energy. Office of Energy Research, and United States. Department of Energy. Office of Scientific and Technical Information
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Summary
The two-nucleon density distributions in states with isospin T=0, spin S=1 and projection M{sub S}=0 and ±1 are studied in ²H, {sup 3,4}He, {sup 6,7}Li and ¹⁶O. The equidensity surfaces for M{sub S}=0 distributions are found to be toroidal in shape, while those of M{sub S}=±1 have dumbbell shapes at large density. The dumbbell shapes are generated by rotating tori. The toroidal shapes indicate that the tensor correlations have near maximal strength at r < 2 fm in all these nuclei. They provide new insights and simple explanations of the structure and electromagnetic form factors of the deuteron, the quasi-deuteron model, and the dp, dd and αd L=2 (D-wave) components in ³He, ⁴He and ⁶Li. The toroidal distribution has a maximum-density diameter of ∼1 fm and a half-maximum density thickness of ∼0.9 fm. Many realistic models of nuclear forces predict these values, which are supported by the observed electromagnetic form factors of the deuteron, and also predicted by classical Skyrme effective Lagrangians, related to QCD in the limit of infinite colors. Due to the rather small size of this structure, it could have a revealing relation to certain aspects of QCD.
Report Numbers
E 1.99:doe/er/40150-1595
E 1.99: cebaf-th-96-03
E 1.99: nucl-th/9603035
E 1.99: p-96-03-022
p-96-03-022
nucl-th/9603035
cebaf-th-96-03
doe/er/40150-1595
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Other Subject(s)
Note
Published through SciTech Connect.
03/01/1996.
"doe/er/40150-1595"
" cebaf-th-96-03"
" nucl-th/9603035"
" p-96-03-022"
Phys.Rev. C54 (1996) 646-667 FT
S. Pieper; R.B. Wiringa; V. Pandharipande; J. Forest; A. Arriaga; R. Shiavilla.
Funding Information
AC05-84ER40150
View MARC record | catkey: 14669566