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Physical Society Colloquium[an error occurred while processing this directive]
Guy Savard Argonne National Labs Ion traps offer a well controlled environment where ions can be stored at rest in vacuum, free from outside perturbations. Such devices, located on-line at an accelerator facility, open many new possibilities for precise studies of the properties of unstable isotopes. Instruments such as the ISOLTRAP spectrometer at CERN/ISOLDE and the new CPT mass spectrometer at ANL have been designed to efficiently inject the radioactive ions created at these facilities into precision Penning traps. The mass of these stored unstable isotopes is then determined from their measured cyclotron frequency in the accurately known magnetic field of the Penning traps. These spectrometers will be described in detail and recent results presented. In addition, unique opportunities will be described, in which stored radioactive ions can be used for precision measurements to test nuclear structure and the fundamental properties of weak interactions.
Thursday, April 9rd, 15:30 |