Isotope Shifts of Radium Monofluoride Molecules

2021/05/21 by S. M. Udrescu, A. J. Brinson, R. F. Garcia Ruiz +25 · 1 citation
Physics and Astronomy · #nucl-ex #nucl-th #physics.atom-ph

paper · pdf · doi:10.1103/physrevlett.127.033001

The paper was accepted for publication as a Letter in Physical Review Letters

arxiv created 2021/05/21 · arxiv updated 2021/07/28

Abstract

Isotope shifts of ^223-226,228Ra¹⁹F were measured for different vibrational levels in the electronic transition A²Π_1/2← X²Σ⁺. The observed isotope shifts demonstrate the particularly high sensitivity of radium monofluoride to nuclear size effects, offering a stringent test of models describing the electronic density within the radium nucleus. Ab initio quantum chemical calculations are in excellent agreement with experimental observations. These results highlight some of the unique opportunities that short-lived molecules could offer in nuclear structure and in fundamental symmetry studies.

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