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Article
Report number	arXiv:1402.4266
Title	Decay-Assisted Laser Spectroscopy of Neutron-Deficient Francium
Related title	Decay-assisted collinear resonance ionization spectroscopy: Application to neutron-deficient francium
Author(s)	Lynch, K.M. (Manchester U. ; CERN ; Leuven U.) ; Billowes, J. (Manchester U.) ; Bissell, M.L. (Leuven U.) ; Budincevic, I. (Leuven U.) ; Cocolios, T.E. (Manchester U. ; CERN) ; De Groote, R.P. (Leuven U.) ; De Schepper, S. (Leuven U.) ; Fedosseev, V.N. (CERN) ; Flanagan, K.T. (Manchester U.) ; Franchoo, S. (Orsay, IPN) ; Ruiz, R.F.Garcia (Leuven U.) ; Heylen, H. (Leuven U.) ; Marsh, B.A. (CERN) ; Neyens, G. (Leuven U.) ; Procter, T.J. (Manchester U.) ; Rossel, R.E. (CERN ; Mainz U., Inst. Phys.) ; Rothe, S. (CERN ; Mainz U., Inst. Phys.) ; Strashnov, I. (Manchester U.) ; Stroke, H.H. (New York U.) ; Wendt, K.D.A. (Mainz U., Inst. Phys.)
Publication	2014-03-28
Imprint	18 Feb 2014
Number of pages	15
Note	Comments: Accepted for publication with Physical Review X Accepted for publication with Physical Review X
In:	Phys. Rev. X 4 (2014) 011055
DOI	10.1103/PhysRevX.4.011055
Subject category	Nuclear Physics - Experiment
Abstract	This paper reports on the hyperfine-structure and radioactive-decay studies of the neutron-deficient francium isotopes $^{202-206}$Fr performed with the Collinear Resonance Ionization Spectroscopy (CRIS) experiment at the ISOLDE facility, CERN. The high resolution innate to collinear laser spectroscopy is combined with the high efficiency of ion detection to provide a highly-sensitive technique to probe the hyperfine structure of exotic isotopes. The technique of decay-assisted laser spectroscopy is presented, whereby the isomeric ion beam is deflected to a decay spectroscopy station for alpha-decay tagging of the hyperfine components. Here, we present the first hyperfine-structure measurements of the neutron-deficient francium isotopes $^{202-206}$Fr, in addition to the identification of the low-lying states of $^{202,204}$Fr performed at the CRIS experiment.
Copyright/License	publication: © 2014-2025 The Author(s) (License: CC-BY-3.0)

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