Nuclear structure with radioactive muonic atoms

¹ Institute of Nuclear Physics, Polish academy of Sciences, Krakow, Poland
² Paul Scherrer Institut, Villigen, Switzerland
³ ETH Zürich, Switzerland
⁴ University of Mainz, Germany
⁵ KULeuven, Belgium
⁶ LKB Paris, France
⁷ VSI, University of Groningen, The Netherlands
⁸ University of Victoria, Canada
⁹ Perimeter Institute, Waterloo, Canada
¹⁰ Institut für Kernphysik, Universität Köln, Germany
¹¹ CSNSM, Universitè Paris Sud, CNRS/IN2P3, Orsay Campus, France

^* e-mail: elisa.rapisarda@psi.ch

Published online: 14 November 2018

Abstract

Muonic atoms have been used to extract the most accurate nuclear charge radii based on the detection of X-rays from the muonic cascades. Most stable and a few unstable isotopes have been investigated with muonic atom spectroscopy techniques. A new research project recently started at the Paul Scherrer Institut aims to extend the highresolution muonic atom spectroscopy for the precise determination of nuclear charge radii and other nuclear structure properties of radioactive isotopes. The challenge to combine the high-energy muon beam with small quantity of stopping mass is being addressed by developing the concept of stopping the muon in a high-density, a high-pressure hydrogen cell and subsequent transfer of the muon to the element of interest. Status and perspectives of the project will be presented.