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Charge Radii of Argon Isotopes in the f7/2 Shell and Radii Systematics in the Ca-Region |
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| Authors: | K Blaum W Geithner J Lassen P Lievens K Marinova R Neugart |
| Institution: | 1. Physics Department, CERN, CH 1211, Geneva 23, Switzerland 2. Institut für Physik, Universit?t Mainz, D-55099, Mainz, Germany 3. TRIUMF, Vancouver BC, V6T 2A3, Canada 4. Laboratorium voor Vaste-Stoffysica en Magnetisme, K.U. Leuven, B-3001, Leuven, Belgium 5. Laboratory of Nuclear Reaction, Joint Institute of Nuclear Research, 141980, Dubna, Russia |
| Abstract: | Changes in mean square (ms) nuclear charge radii of Ar isotopes across the 1f7/2 shell are studied by fast-beam collinear laser spectroscopy using an ultra-sensitive detection method based on optical pumping and state-selective collisional ionization. The new data set on Ar, in combination with the known charge radii of K, Ca and Ti in the ν1f7/2 shell, offers an opportunity to obtain a more complete overview of nuclear radii trends around the proton shell closure Z = 20 and between the neutron shell closures N = 20 and N = 28. |
| Keywords: | collinear fast-beam laser spectroscopy collisional ionization mean square charge radii of 38– 46Ar isotopes method of direct measurement of the beam kinetic energy nuclear radii trend in the calcium region |
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