Exploring the anomaly in the interaction cross section and matter radius of 23O
R. Kanungo, A. Prochazka, M. Uchida, W. Horiuchi, G. Hagen, T., Papenbrock, C. Nociforo, T. Aumann, D. Boutin, D. Cortina-Gil, B. Davids, M., Diakaki, F. Farinon, H. Geissel, R. Gernhauser, J. Gerl, R. Janik, {\O}., Jensen, B. Jonson, B. Kindler, R. Knobel, R. Krucken, M. Lantz
TL;DR
This paper reports new measurements of interaction cross sections and matter radii for oxygen isotopes 22O and 23O, resolving previous puzzles and confirming theoretical predictions with improved experimental data.
Contribution
It provides new experimental data and theoretical analysis that clarify the structure of 23O and its relation to 22O, addressing previous inconsistencies.
Findings
Measured interaction cross sections at 900A MeV for 22O and 23O.
Matter radii of 22O and 23O agree with ab initio coupled-cluster predictions.
Supports a 22O+neutron model for 23O.
Abstract
New measurements of the interaction cross sections of 22,23O at 900A MeV performed at the GSI, Darmstadt are reported that address the unsolved puzzle of the large cross section previously observed for 23O. The matter radii for these oxygen isotopes extracted through a Glauber model analysis are in good agreement with the new predictions of the ab initio coupled-cluster theory reported here. They are consistent with a 22O+neutron description of 23O as well.
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