Towards high-resolution laser ionization spectroscopy of the heaviest elements in supersonic gas jet expansion

R. Ferrer (), A. Barzakh, B. Bastin, R. Beerwerth, M. Block, P. Creemers, H. Grawe, R. de Groote, P. Delahaye, X. Fléchard, S. Franchoo, S. Fritzsche, L. P. Gaffney, L. Ghys, W. Gins, C. Granados, R. Heinke, L. Hijazi, M. Huyse, T. Kron, Yu. Kudryavtsev, M. Laatiaoui, N. Lecesne, M. Loiselet, F. Lutton, I. D. Moore, Y. Martínez, E. Mogilevskiy, P. Naubereit, J. Piot, S. Raeder, S. Rothe, H. Savajols, S. Sels, V. Sonnenschein, Thomas J-C, E. Traykov, C. Van Beveren, P. Van den Bergh, P. Van Duppen, K. Wendt and A. Zadvornaya
Additional contact information
R. Ferrer: KU Leuven, Instituut voor Kern-en Stralingsfysica
A. Barzakh: Petersburg Nuclear Physics Institute, NRC Kurchatov Institute
B. Bastin: GANIL, CEA/DRF-CNRS/IN2P3
R. Beerwerth: Helmholtz Institute Jena
M. Block: GSI Helmholtzzentrum für Schwerionenforschung GmbH
P. Creemers: KU Leuven, Instituut voor Kern-en Stralingsfysica
H. Grawe: GSI Helmholtzzentrum für Schwerionenforschung GmbH
R. de Groote: KU Leuven, Instituut voor Kern-en Stralingsfysica
P. Delahaye: GANIL, CEA/DRF-CNRS/IN2P3
X. Fléchard: Normandie Univ, ENSICAEN, UNICAEN, CNRS/IN2P3, LPC Caen
S. Franchoo: Institute de Physique Nucléaire (IPN) d’Orsay
S. Fritzsche: Helmholtz Institute Jena
L. P. Gaffney: KU Leuven, Instituut voor Kern-en Stralingsfysica
L. Ghys: KU Leuven, Instituut voor Kern-en Stralingsfysica
W. Gins: KU Leuven, Instituut voor Kern-en Stralingsfysica
C. Granados: KU Leuven, Instituut voor Kern-en Stralingsfysica
R. Heinke: Institut für Physik, Johannes Gutenberg-Universität Mainz
L. Hijazi: GANIL, CEA/DRF-CNRS/IN2P3
M. Huyse: KU Leuven, Instituut voor Kern-en Stralingsfysica
T. Kron: Institut für Physik, Johannes Gutenberg-Universität Mainz
Yu. Kudryavtsev: KU Leuven, Instituut voor Kern-en Stralingsfysica
M. Laatiaoui: GSI Helmholtzzentrum für Schwerionenforschung GmbH
N. Lecesne: GANIL, CEA/DRF-CNRS/IN2P3
M. Loiselet: Université catholique de Louvain, Centre de Ressources du Cyclotron
F. Lutton: GANIL, CEA/DRF-CNRS/IN2P3
I. D. Moore: University of Jyväskylä
Y. Martínez: KU Leuven, Instituut voor Kern-en Stralingsfysica
E. Mogilevskiy: KU Leuven, Instituut voor Kern-en Stralingsfysica
P. Naubereit: Institut für Physik, Johannes Gutenberg-Universität Mainz
J. Piot: GANIL, CEA/DRF-CNRS/IN2P3
S. Raeder: KU Leuven, Instituut voor Kern-en Stralingsfysica
S. Rothe: CERN
H. Savajols: GANIL, CEA/DRF-CNRS/IN2P3
S. Sels: KU Leuven, Instituut voor Kern-en Stralingsfysica
V. Sonnenschein: University of Jyväskylä
Thomas J-C: GANIL, CEA/DRF-CNRS/IN2P3
E. Traykov: GANIL, CEA/DRF-CNRS/IN2P3
C. Van Beveren: KU Leuven, Instituut voor Kern-en Stralingsfysica
P. Van den Bergh: KU Leuven, Instituut voor Kern-en Stralingsfysica
P. Van Duppen: KU Leuven, Instituut voor Kern-en Stralingsfysica
K. Wendt: Institut für Physik, Johannes Gutenberg-Universität Mainz
A. Zadvornaya: KU Leuven, Instituut voor Kern-en Stralingsfysica

Nature Communications, 2017, vol. 8, issue 1, 1-9

Abstract: Abstract Resonant laser ionization and spectroscopy are widely used techniques at radioactive ion beam facilities to produce pure beams of exotic nuclei and measure the shape, size, spin and electromagnetic multipole moments of these nuclei. However, in such measurements it is difficult to combine a high efficiency with a high spectral resolution. Here we demonstrate the on-line application of atomic laser ionization spectroscopy in a supersonic gas jet, a technique suited for high-precision studies of the ground- and isomeric-state properties of nuclei located at the extremes of stability. The technique is characterized in a measurement on actinium isotopes around the N=126 neutron shell closure. A significant improvement in the spectral resolution by more than one order of magnitude is achieved in these experiments without loss in efficiency.

Date: 2017
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DOI: 10.1038/ncomms14520

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