Quantum Monte Carlo calculations of magnetic moments and M1 transitions in A{<=}7 nuclei including meson-exchange currents

Journal Article · Mon Dec 15 00:00:00 EST 2008 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.78.065501· OSTI ID:21199463

Marcucci, L E ^[1]; Pervin, Muslema; Pieper, Steven C; Wiringa, R B ^[2]; Schiavilla, R ^[3]

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1. Department of Physics 'Enrico Fermi', University of Pisa, I-56127 Pisa (Italy)
2. Physics Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States)
3. Theory Center, Jefferson Laboratory, Newport News, Virginia 23606 (United States)

Green's function Monte Carlo calculations of magnetic moments and M1 transitions including two-body meson-exchange current (MEC) contributions are reported for A{<=}7 nuclei. The realistic Argonne v{sub 18} two-nucleon and Illinois-2 three-nucleon potentials are used to generate the nuclear wave functions. The two-body meson-exchange operators are constructed to satisfy the continuity equation with the Argonne v{sub 18} potential. The MEC contributions increase the A=3,7 isovector magnetic moments by 16% and the A=6,7 M1 transition rates by 17-34%, bringing them into very good agreement with the experimental data.

• OSTI ID: 21199463
• Journal Information: Physical Review. C, Nuclear Physics, Vol. 78, Issue 6; Other Information: DOI: 10.1103/PhysRevC.78.065501; (c) 2008 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BOSON-EXCHANGE MODELS
CONTINUITY EQUATIONS
CURRENTS
GREEN FUNCTION
ISOVECTORS
M1-TRANSITIONS
MAGNETIC MOMENTS
MONTE CARLO METHOD
NUCLEI
NUCLEONS
TWO-BODY PROBLEM
WAVE FUNCTIONS