Now showing items 41-50 of 77
Baryon-baryon spin-orbit and tensor interactions from quark-exchange kernels
(Elsevier, 1984-06-04)
Dibaryon quark-exchange kernels are constructed in explicit analytic form for the tensor and spin-orbit terms of the one-gluon-exchange quark-quark Breit interaction and for spin-orbit terms generated by quark-confinement ...
RGM study of the NN interaction in an extended quark model
(Elsevier, 1987-02-09)
The extended quark model study of the NN interaction, in which the () excitations inherent in the quark-gluon interaction are explicitly incorporated into the model space, is completed with the inclusion of the () () ...
Symplectic and cluster excitations in nuclei: : Evaluation of interaction matrix elements
(Elsevier, 1986-07-14)
A practical method is given for the evaluation of the matrix elements of a general two-body interaction in a mixed Sp(6, R) [superset or implies] U(3)-microscopic cluster model basis. A reduction formula expresses a matrix ...
Spreading widths of isobaric analog states and the isovector giant monopole resonance
(Elsevier, 1987-02-23)
A global analysis of the experimental spreading widths [Gamma][downwards arrow] of 65 isobaric analog states (IAS) in the range A = 110 to 238 has been performed assuming isospin mixing via the Coulomb force with T = T0-1 ...
12C(6Li, d)16O at E(Li) = 90 MeV
(Elsevier, 1980-08-04)
The 12C(6Li, d)16O reaction has been studied at E(6Li) = 90.2 MeV with a magnetic spectrometer. Spectra up to Ex [approximate] 30 MeV in 16O have been obtained and decay line widths, [Gamma]c.m., have been extracted for ...
Coulomb displacement energies and decay widths of isobaric analog states from Sm(3He, t) at [theta] = 0[deg]
(Elsevier, 1983-06-27)
The 144,147,148,149,150,154Sm(3He, t)144,147,148,149,150,152,154Eu reactions leading to ground-state isobaric analog states (IAS) have been studied at [theta] = 0[deg] and E(3He) = 45.9 MeV. The Coulomb displacement energies ...
A radioactive beam facility using a large superconducting solenoid
(Elsevier, 1989-04-02)
A facility for producing well-focussed (~ 5 mm diameter) secondary beams of 6He, 7Be, 8Li, and similar ions has been implemented. The heart of the apparatus is a superconducting solenoid operating in an asymmetric lens ...
Wigner coefficients for the proton-neutron quasispin group: An application of vector coherent state techniques
(Elsevier, 1989-02-27)
SO(5) [superset or implies] U(2) reduced Wigner coefficients, needed to extract the n, T-dependence of nuclear matrix elements in the seniority scheme, are evaluated by vector coherent state techniques by casting operators ...
NN tensor and LS potentials in a quark model with quark-antiquark excitations
(Elsevier, 1986-08-25)
A more detailed study is made of the NN interaction in a quark model in which the (qq) excitations inherent in the quark-gluon interaction are explicitly incorporated into the model space. A unified treatment for all types ...
Coherent-state theory for the proton-neutron quasispin group
(Elsevier, 1985-05-13)
An extended coherent-state theory 1, 2) is used to give a simple construction for the matrix elements of the proton-neutron sp(4) quasispin algebra. A very simple analytical expression is given for the matrix elements of ...