Neutron radii of the calcium isotopes

Journal Article · Sun Nov 01 04:00:00 EST 1992 · Physical Review, C (Nuclear Physics); (United States)

DOI:https://doi.org/10.1103/PhysRevC.46.1825· OSTI ID:7157233

Gibbs, W R ^[1]; Dedonder, J ^[2]

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1. Department of Physics, New Mexico State University, Las Cruces, New Mexico 88003 (United States) Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)
2. Laboratoire de Physique Nucleaire, Universite Paris VII, Paris (France) Division de Physique Theorique, Institut de Physique Nucleaire, Orsay (France)

We have analyzed pion scattering data to determine the proton and neutron radii of the calcium isotopes {sup 40,42,44,48}Ca using model densities in which the neutron matter distributions are considered to have components corresponding to core and valence neutrons. The proton radii determined agree with those obtained by electromagnetic means. The radii of the valence distributions show a monotonic decrease throughout the shell from {similar to}4.9 fm in {sup 42}Ca to {similar to}4.4 fm in {sup 44}Ca and {similar to}4.2 fm in {sup 48}Ca, although this last case is only indicative. The large valence neutron radius of {sup 42}Ca suggests that the ground state of this nucleus may have some characteristics of a bound dineutron orbiting a closed core.

• OSTI ID: 7157233
• Journal Information: Physical Review, C (Nuclear Physics); (United States), Journal Name: Physical Review, C (Nuclear Physics); (United States) Vol. 46:5; ISSN 0556-2813; ISSN PRVCA
• Country of Publication: United States
• Language: English

Related Subjects

663110* -- General & Average Properties of Nuclei & Nuclear Energy Levels-- (1992-)
663460 -- Meson- & Hyperon-induced Reactions & Scattering-- (1992-)
663540 -- Nuclear Mass Ranges-- A=39-58-- (1992-)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALKALINE EARTH ISOTOPES
BARYONS
CALCIUM 40
CALCIUM 42
CALCIUM 44
CALCIUM 48
CALCIUM ISOTOPES
CHARGED-PARTICLE REACTIONS
DISTRIBUTION FUNCTIONS
ELASTIC SCATTERING
ELEMENTARY PARTICLES
ENERGY RANGE
EVEN-EVEN NUCLEI
FERMIONS
FUNCTIONS
HADRON REACTIONS
HADRONS
INTERMEDIATE MASS NUCLEI
ISOTOPES
LIGHT NUCLEI
MATTER
MESON REACTIONS
MEV RANGE
MEV RANGE 100-1000
NEUTRONS
NUCLEAR MATTER
NUCLEAR PROPERTIES
NUCLEAR RADII
NUCLEAR REACTIONS
NUCLEAR STRUCTURE
NUCLEI
NUCLEONS
OPTICAL MODELS
PION MINUS REACTIONS
PION PLUS REACTIONS
PION REACTIONS
PROTONS
SCATTERING
STABLE ISOTOPES