Collinear Resonance Ionization Spectroscopy of Neutron-Deficient Francium Isotopes
- Flanagan, K.T.
- Lynch, K.M.
- Billowes, J.
- Bissell, M.L.
- Budincevic, I.
- Cocolios, Thomas Elias
- de Groote, R.P.
- De Schepper, S.
- Fedosseev, V.N.
- Franchoo, S.
- Garcia Ruiz, R.F.
- Heylen, H.
- Marsh, B.A.
- Neyens, G.
- Procter, T.J.
- Rossel, R.E.
- Rothe, S.
- Strashnov, I.
- Stroke, H.H.
- Wendt, K.D.A.
Publication date
November 2013
DOI Publisher
American Physical Society Journal
0031-9007Abstract
The magnetic moments and isotope shifts of the neutron-deficient francium isotopes 202-205Fr were measured at ISOLDE-CERN with use of collinear resonance ionization spectroscopy. A production-to-detection efficiency of 1% was measured for 202Fr. The background from nonresonant and collisional ionization was maintained below one ion in 105 beam particles. Through a comparison of the measured charge radii with predictions from the spherical droplet model, it is concluded that the ground-state wave function remains spherical down to 205Fr, with a departure observed in 203Fr (N = 116).status: publishe
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