Laser spectroscopy techniques have been widely used to extract nuclear structure information on the ground state properties of exotic nuclei. Nuclear moments, spins and changes in the root-mean-squared nuclear charge radii can be measured in a model independent way [1].
Although a deeper understanding of the atomic nucleus has been reached by a joint effort between theorists and experimentalists, key questions remain unresolved far way from stability, where radioactive isotopes can only be produced at very low rates (<100 ions/s). With the aim of studying such regions of the nuclear chart, this seminar presents some of the latest results on the developments of high sensitivity laser spectroscopy techniques.
High-resolution measurements of the hyperfine structure spectra and isotope shifts of K(Z=19) and Ca(Z=20) isotopes were obtained by using collinear laser spectroscopy at ISOLDE, CERN, expanding our experimental knowledge of the ground state properties of these isotopes up to N=32 [2-6]. The current developments to extend these measurements beyond N=32 [7] and the perspectives for future experiments using collinear resonance ionization spectroscopy [8,9] in the Ca region will be discussed.
[1] P. Campell, I.D. Moore, M.R. Pearson. Prog. Part. Nucl. Phys. In press (2015).
[2] Papuga, J. et al. Phys. Rev. Lett. 119, 172503 (2013).
[3] Papuga J. et al., Phys. Rev. C 90, 034321 (2014).
[4] Kreim, K. et al. Phys. Lett. B 731, 97 (2014).
[5] Garcia Ruiz, R.F. et al.. Phys. Rev. C 91, 041304(R) (2015).
[6] Garcia Ruiz, R.F. et al. Submitted (2015).
[7] Garcia Ruiz, R.F. et al. In preparation (2015).
[8] K. T. Flanagan et al., Phys. Rev. Lett. 111, 212501 (2013).
[9] R.P. De Groote et al., Phys. Rev. Lett. 115, 132501 (2015).
Instituut voor Kern-en Stralingsfysica, KU Leuven, B-3001 Leuven, Belgium; School of Physics and Astronomy, The University of Manchester, Manchester M13 9PL, UK