Distribution of charge and matter in nuclei: Charge density difference of /sup 206/Pb and /sup 205/Tl

Journal Article · Sun Dec 01 00:00:00 EST 1985 · Phys. Rev. C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.32.2173· OSTI ID:6444524

Celenza, L S; Harindranath, A; Shakin, C M

We contrast two calculations of the charge density difference of /sup 206/Pb and /sup 205/Tl. In the simplest model this difference in charge density is due to the occupation of an additional 3s/sub 1/2/ orbital in /sup 206/Pb. A standard mean-field calculation of the charge difference does not yield a satisfactory result. One may modify this result by assigning the 3s/sub 1/2/ orbital an occupation probability of seventy percent, with a corresponding increase to thirty percent of the occupation probability of a 2d/sub 3/2/ orbital. However, this modification of the mean-field analysis, while solving one problem, is seen to create a new problem in the fit to the data. In this work we present an alternative analysis: We maintain unit occupation probability for the 3s/sub 1/2/ orbital but use the medium-modified proton electromagnetic form factor we have calculated previously. Our model is able to give a better fit to the data without the introduction of free parameters into the analysis. Medium-modified form factors have recently been shown to be effective in explaining the charge distribution of /sup 208/Pb and their application to the interpretation of the /sup 206/Pb-/sup 205/Tl charge density difference yields a result which is consistent with the experimental data and superior to that obtained in the adjusted mean-field analysis described above.

• Research Organization: Department of Physics and Center for Nuclear Theory, Brooklyn College of the City University of New York, Brooklyn, New York 11210
• OSTI ID: 6444524
• Journal Information: Phys. Rev. C; (United States), Vol. 32:6
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
LEAD 206
CHARGE DISTRIBUTION
THALLIUM 205
ELECTROMAGNETIC FORM FACTORS
MEAN-FIELD THEORY
EVEN-EVEN NUCLEI
FORM FACTORS
HEAVY NUCLEI
ISOTOPES
LEAD ISOTOPES
NUCLEI
ODD-EVEN NUCLEI
PARTICLE PROPERTIES
STABLE ISOTOPES
THALLIUM ISOTOPES
651911* - Nuclear Properties & Reactions
A=190-219
Theoretical- Mass
Abundance
& Binding Energy- (-1987)