Neutron drops and neutron pairing energy

Year: 1997

Authors: Smerzi A., Ravenhall D.G., Pandharipande V.R.

Autors Affiliation: Department of Physics, University of Illinois at Urbana-Champaign, Urbana, IL, 61801-3080, 1110 West Green Street, United States

Abstract: The ground state energy of a six-neutron drop is computed with variational and Green’s function Monte Carlo methods using the Argonne upsilon(18) two-nucleon and the Urbana three-nucleon potentials. Combined with earlier results from investigations of the drops (8)n and (7)n, this energy gives a Ip-shell pairing energy of (1.8 +/- 0.4) MeV. The generalized Skyrme effective interaction discussed in the earlier work is applied to these nuclei by calculating, for the open-shell drops (7)n and (6)n, the matrix elements of the Skyrme t matrix directly for the states involved. The pairing energy obtained is 1.50 MeV, in reasonable agreement with the accurate calculations.

Journal/Review: PHYSICAL REVIEW C

Volume: 56 (5)      Pages from: 2549  to: 2556

KeyWords: Monte-carlo Calculations; Light-nuclei; Matter
DOI: 10.1103/PhysRevC.56.2549

Citations: 27
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