Magnetic form factors of the trinucleons

Journal Article · Wed Nov 01 04:00:00 EST 1989 · Physical Review C

DOI:https://doi.org/10.1103/PhysRevC.40.2294· OSTI ID:919472

Schiavilla, R; Pandharipande, V R; Riska, Dan-Olof

The magnetic form factors of ³H and ³He are calculated with the Monte Carlo method from variational ground-state wave functions obtained for the Argonne and Urbana two- and three-nucleon interactions. The electromagnetic current operator contains one- and two-body terms that are constructed so as to satisfy the continuity equation with the two-nucleon potential in the Hamiltonian. The results obtained with the Argonne two-nucleon interaction are in overall agreement with the empirical values. It appears that the remaining theoretical uncertainty, in the calculation of these form factors from a given interaction model, is dominated by that in the electromagnetic form factors of the nucleon. It is found that the isovector magnetic form factors are rather sensitive to the details of the isospin-dependent tensor force, and they are much better reproduced with the Argonne than the Urbana potential. The isoscalar magnetic form factors appear to be sensitive to the spin-orbit interactions, and are better reproduced with the Urbana potential. The Argonne potential has a stronger τ1∙τ2 tensor force, while the Urbana one has a shorter-range spin-orbit interaction.

• Research Organization: Thomas Jefferson National Accelerator Facility, Newport News, VA
• Sponsoring Organization: USDOE - Office of Energy Research (ER)
• DOE Contract Number: AC05-84ER40150
• OSTI ID: 919472
• Report Number(s): CEBAF-TH-89-05; DOE/ER/40150-4390
• Journal Information: Physical Review C, Journal Name: Physical Review C Journal Issue: 5 Vol. 40; ISSN 2469-9985
• Publisher: APS
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
CONTINUITY EQUATIONS
ELECTROMAGNETIC FORM FACTORS
HELIUM 3
ISOVECTORS
MONTE CARLO METHOD
TENSOR FORCES
TRITIUM
WAVE FUNCTIONS