Nuclear structure research at TRIUMF

Abstract

The radioactive beam laboratory at TRIUMF is currently the highest power ISOL facility in the world. Taking advantage of the high-intensity beams, major programs in nuclear astrophysics, nuclear structure, and weak interaction studies have begun. The low-energy area, ISAC-I, is capable of delivering beams up to mass 30 at [approximately] 1.7MeV/u or 60 keV up to the mass of the primary target, whereas ISAC-II will ultimately provide beams up to mass 150 and [approximately] 6.5 MeV/u. Major [gamma]-ray spectrometers for nuclear structure research consist of the 8[pi] spectrometer at ISAC-I, and the TIGRESS spectrometer now being constructed for ISAC-II. Results from recent experiments investigating the [beta] -decay of nuclei near N = 90 and Coulomb excitation of [superscript 20,21]Na are presented that highlight the capabilities of the spectrometers.