Collinear Resonance Ionization Spectroscopy of Neutron-Deficient Francium Isotopes

Collinear Resonance Ionization Spectroscopy of Neutron-Deficient Francium Isotopes

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 ioniza...

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Veröffentlicht in:Physical Review Letters 2013-11, Vol.111 (21), p.212501-4
Hauptverfasser: 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
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Sprache:eng
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Zusammenfassung: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).
ISSN:0031-9007