Abstract
The production of ISOL beams of hafnium is described. Radioactive Hf isotopes were produced at ISOLDE by 1.4 GeV proton-induced spallation in Ta and W foils. Chemical evaporation in form of HfF4 and mass separation in the molecular sideband HfF3+ after electron impact ionization provided intense and pure beams. Beams of 158-185Hf and short-lived isomers down to 1.1 s 177mHf were observed, but the method could be extended to reach even more exotic isotopes: down to about 154Hf (N=82) on the neutron-deficient side and up to neutron-rich 188Hf.
Original language | English |
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Pages (from-to) | 293-296 |
Number of pages | 4 |
Journal | The European Physical Journal Special Topics |
Volume | 150 |
Issue number | 1 |
DOIs | |
Publication status | Published - 1 Nov 2007 |
Externally published | Yes |