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27–30 Jan 2025
IAEA Headquarters, Vienna
Europe/Vienna timezone

From total neutron cross sections to nuclear charge radii - Part 2

28 Jan 2025, 09:00
45m
Room C0343 (IAEA Headquarters, Vienna)

Room C0343

IAEA Headquarters, Vienna

Vienna International Center Wagramerstrasse 5 U-Bahn U1 Kaisermuhlen

Speaker

István ANGELI (Institute of Experimental Physics, University of Debrecen)

Description

$\textbf{Historical overview}$. War and peace. The foundation of the International Atomic Energy Agency. Neutron cross sections; $\underline{\rm matter \,radii}$; correlation with binding energy, mass dependence. Semiclassical model (NASA), matter radius derived. Visit to Ioffe Institute: K$_\alpha$ Isotope Shift $\rightarrow$ $\delta r^2_{charge}$; other methods. Tables of rms $\underline{\rm charge \,radii}$ from electron scattering, muonic atom transitions, K$_\alpha$ isotope shifts, optical isotope shifts. Fine structure in $\underline{\rm charge \,radii}$ along isotopic series: shell effects, odd-even, deformation. Fine structure along isotonic, isobaric, isosymmetric series.
$\textbf{ I. Table of rms charge radii}$. Correlated shell effects in charge radii and binding energy. Comparison of experiment to theory; calculated neutron skins. Table of rms charge radii from electron scattering. Table of $\delta r^2$ from optical isotope shifts. Difference between r$_{el}$ and r$_{mu}$; caused by dispersion effects? Effect of valence nucleons on charge radii; the P-factor.
$\textbf{II. Table of rms charge radii.}$ Systematics of charge radii. $\textbf{III. Table of rms charge radii.}$ $\textbf{IV. Table of rms charge radii.}$
$\textbf{V. Consistent table of rms charge radii.}$ Moments of the two-parameter Fermi charge distribution. The kink strength: a tool for search of structures in series. The proton radius puzzle.
$\textbf{VI. Table of}$ $\delta < r^2 >$ $\textbf{and rms charge radii.}$ Correlation of nuclear charge radii with other nuclear observables.

$\textbf{Problems.}$ Dispersion correction in electron scattering. Consequences of the proton radius puzzle: a) normalized data; b) charge radius formulae. Recommendation of radius formulae.
$\textbf{Future}$: Weak ($\approx$ neutron) rms radii from parity violating electron scattering?

Primary author

István ANGELI (Institute of Experimental Physics, University of Debrecen)

Presentation materials