Developing nuclear moment measurement techniques for radioactive beams
Anna N. Wilson
The Australian National University
日時：2003年11月17日（月） 10:30-12:00
場所：
The use of transient field techniques to measure nuclear g-factors andquadrupole moments is a well-established tool in nuclear structurestudies: the properties of many short-lived states in stable nuclei havebeen measured by Coulomb excitation, while longer-lived isomeric states instable nuclei are studied following heavy-ion reactions. However, theadvent of radioactive beam facilities means that the Coulomb excitationtechnique must be extended to deal with ions moving at velocities thatextend well beyond the K-electron velocity, Zv0. We are currentlyperforming a series of measurements to characterise the transient magneticfield for light ions moving at high velocities, the results of which willbe essential to planned g-factor measurements of projectile-fragmentationproducts such as the neutron-rich S isotopes. We are also developing asimple method of measuring sub-ns lifetimes which can be applied in-beam,thus providing precise lifetime information required by other momentmeasurements.
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