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Title	High-resolution laser spectroscopy with the Collinear Resonance Ionisation Spectroscopy (CRIS) experiment at CERN-ISOLDE
Author(s)	Cocolios, T E (Manchester U.) ; de Groote, R P (Leuven U.) ; Billowes, J (Manchester U.) ; Bissell, M L (Manchester U. ; Leuven U.) ; Budinčević, I (Leuven U.) ; Day Goodacre, T (Manchester U. ; CERN) ; Farooq-Smith, G J (Manchester U.) ; Fedosseev, V N (CERN) ; Flanagan, K T (Manchester U.) ; Franchoo, S (Orsay, IPN) ; Garcia Ruiz, R F (Leuven U.) ; Gins, W (Leuven U.) ; Heylen, H (Leuven U.) ; Kron, T (Mainz U., Inst. Phys.) ; Li, R (Orsay, IPN) ; Lynch, K M (Leuven U. ; CERN) ; Marsh, B A (CERN) ; Neyens, G (Leuven U.) ; Rossel, R E (CERN ; Mainz U., Inst. Phys.) ; Rothe, S (CERN) ; Smith, A J (Manchester U.) ; Stroke, H H (New York U. (main)) ; Wendt, K D A (Mainz U., Inst. Phys.) ; Wilkins, S G (Manchester U.) ; Yang, X (Leuven U.)
Publication	2016
Number of pages	4
In:	Nucl. Instrum. Methods Phys. Res., B 376 (2016) 284-287
In:	17th International Conference on Electromagnetic Isotope Separators and Related Topics, Grand Rapids, USA, 11 - 15 May 2015, pp.284-287
DOI	10.1016/j.nimb.2015.11.024
Subject category	Nuclear Physics - Experiment
Accelerator/Facility, Experiment	CERN ISOLDE
Abstract	The Collinear Resonance Ionisation Spectroscopy (CRIS) experiment at CERN has achieved high-resolution resonance ionisation laser spectroscopy with a full width at half maximum linewidth of 20(1) MHz for 219,221 Fr, and has measured isotopes as short lived as 5 ms with 214 Fr. This development allows for greater precision in the study of hyperfine structures and isotope shifts, as well as a higher selectivity of single-isotope, even single-isomer, beams. These achievements are linked with the development of a new laser laboratory and new data-acquisition systems.
Copyright/License	publication: © 2016-2025 The Author(s) (License: CC-BY-4.0) © 2016-2025 CERN (License: CC-BY-4.0)

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