Microscopic study of the high-spin behaviour in selected A ~= 80 nuclei

The development of on-line mass separators, which provide long chains of isotopes extending far off stability, immediately raised the question of how to gain access to the basic nuclear ground-state properties of these exotic nuclei—their spins, moments, radii, and masses. In general, the amount of radioactive material produced at these facilities is too small to form beams or targets for any kind of scattering or nuclear-reaction experiment. On the other hand, the traditional spectroscopic methods, namely, atomic, nuclear, and mass spectroscopy, have turned out to be very suitable for this application since they are easily adapted to the special on-line conditions.

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Nuclear Radii and Moments of Unstable Isotopes

Hyperfine structure and isotope shift of the D2 line of 118–145Cs and some of their isomers

Nuclear Data Sheets for A = 208

Hyperfine structures and isotope shifts of 207–213,220–228Fr; Possible evidence of octupolar deformation

Nuclear spins and magnetic moments of some cesium isotopes

Nuclear spins and magnetic moments of some neutron-deficient rubidium isotopes

The nuclear ground state spins of some francium isotopes have been measured using on-line atomic-beam magnetic resonance techniques. The following results have been obtained: 208Fr I = 7, 209Fr I = 9/2, 210Fr I = 6, 211Fr I = 9/2, 212Fr I = 5, 213Fr I = 9/2, 220Fr I = 1, 221Fr I = 5/2 and 222Fr I = 2. The spin values are discussed briefly in terms of current nuclear models.

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M. Skarestad

Papers

Nuclear spins and magnetic moments of some cesium isotopes

Nuclear spins and magnetic moments of some neutron-deficient rubidium isotopes

Nuclear Ground State Spins of the Francium Isotopes 208-213, 220-222Fr

Hyperfine structure, nuclear spins and moments of short-lived nuclides studied by on-line atomic-beam magnetic resonance techniques