Dependence of two-neutron momentum densities on total pair momentum

Journal Article · Tue Jan 01 04:00:00 EST 2008 · Physical Review C

OSTI ID:960469

Carlson, Joseph A ^[1]; Wiringa, R B ^[2]; Schiavilla, R ^[3]; Pieper, Steven C ^[2]

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1. Los Alamos National Laboratory
2. ANL
3. JEFFERSON LAB

Two-nucleon momentum distributions are calculated for the ground states of {sup 3}He and {sup 4}He as a function of the nucleons' relative and total momenta. We use variational Monte Carlo wave functions derived from a realistic Hamiltonian with two- and three-nucleon potentials. The momentum distribution of pp pairs is found to be much smaller than that of pn pairs for values of the relative momentum in the range (300--500) MeV/c and vanishing total momentum. Howeer, as the totalmomentum increases to 400 MeV/c, the ratio of pp to pn pairs in this relative momentum range grows and approaches the limit 1/2 for {sup 3}He and 1/4 for {sup 4}He, corresponding to the ratio of pp to pn pairs in these nuclei. This behavior should be easily observable in two-nucleon knock-out processes, such as A(e, e'pN).

• Research Organization: Los Alamos National Laboratory (LANL)
• Sponsoring Organization: DOE
• DOE Contract Number: AC52-06NA25396
• OSTI ID: 960469
• Report Number(s): LA-UR-08-04933; LA-UR-08-4933
• Journal Information: Physical Review C, Journal Name: Physical Review C
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
DISTRIBUTION
FUNCTIONS
GROUND STATES
HAMILTONIANS
NUCLEI
NUCLEONS
POTENTIALS
RANGE
WAVE FUNCTIONS