{sup 22}C: An s-wave two-neutron halo nucleus

Journal Article · Fri Sep 15 04:00:00 EDT 2006 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.74.034311· OSTI ID:20863783

Horiuchi, W ^[1]; Suzuki, Y ^[2]

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1. Graduate School of Science and Technology, Niigata University, Niigata 950-2181 (Japan)
2. Department of Physics and Graduate School of Science and Technology, Niigata University, Niigata 950-2181 (Japan)

A dripline nucleus {sup 22}C is studied in a Borromean three-body model of {sup 20}C+n+n. The valence neutrons, interacting via a realistic potential, are constrained to be orthogonal to the occupied orbits in {sup 20}C. We obtain ample results supporting that {sup 22}C is an ideal s-wave two-neutron halo nucleus: The ground state is bound by 390-570 keV, the root mean square neutron and proton radii are 4.0 and 2.4 fm, and the two neutrons are predominantly in (s{sub 1/2}){sup 2} orbits. The binding mechanism of {sup 22}C is discussed. One- and two-body density distributions elucidate the halo character as well as the correlated motion of the neutrons. The reaction cross sections of {sup 22}C+{sup 12}C collisions are predicted.

• OSTI ID: 20863783
• Journal Information: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 3 Vol. 74; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
CARBON 12
CARBON 20
CARBON 22
CROSS SECTIONS
DENSITY
DISTRIBUTION
GROUND STATES
KEV RANGE
NEUTRONS
NUCLEAR HALOS
NUCLEAR POTENTIAL
ORBITS
PROTONS
S WAVES
THREE-BODY PROBLEM
TWO-BODY PROBLEM
VALENCE