[en] The physics, and a design, of a Large Hadron Electron Collider (LHeC) are sketched. With high luminosity, 10³³ cm^-2s^-1, and high energy, √(s)=1.4 TeV, such a collider can be built in which a 70 GeV electron (positron) beam in the LHC tunnel is in collision with one of the LHC hadron beams and which operates simultaneously with the LHC. The LHeC makes possible deep-inelastic lepton-hadron (ep, eD and eA) scattering for momentum transfers Q² beyond 10⁶ GeV² and for Bjorken x down to the 10^-6. New sensitivity to the existence of new states of matter, primarily in the lepton-quark sector and in dense partonic systems, is achieved. The precision possible with an electron-hadron experiment brings in addition crucial accuracy in the determination of hadron structure, as described in Quantum Chromodynamics, and of parton dynamics at the TeV energy scale. The LHeC thus complements the proton-proton and ion programmes, adds substantial new discovery potential to them, and is important for a full understanding of physics in the LHC energy range. (orig.)

[en] The branching ratio for the superallowed β⁺ decay of ³⁸K^m was measured at TRIUMF's ISAC radioactive ion beam facility. The M3 internal transition between the isomer and the ground state of ³⁸K^m was observed with a branching ratio of 330(43) ppm. A search for the nonanalogue β-decay branch to the first excited 0⁺ state in ³⁸Ar was also performed and yielded an upper limit of ≤12 ppm at 90% C.L. These measurements lead to a revised superallowed branching ratio for ³⁸K^m of 99.967(4)%, and increase the ³⁸K^m ft value by its entire quoted uncertainty to ft=3052.1(10) s. Implications for tests of the nuclear-structure dependent corrections in superallowed β decays and the extraction of the Cabibbo-Kobayashi-Maskawa matrix element V_ud are discussed

[en] The Isotope Separator and Accelerator (ISAC) facility located at the TRIUMF laboratory in Vancouver, Canada, is one of the world's most advanced ISOL-type radioactive ion beam facilities. An extensive γ-ray spectroscopy program at ISAC is centered around two major research facilities: (1) the 8π γ-ray spectrometer for β-delayed γ-ray spectroscopy experiments with the low-energy beams from ISAC-I, and (2) the next-generation TRIUMF-ISAC Gamma-Ray Escape Suppressed Spectrometer (TIGRESS) for in-beam experiments with the accelerated radioactive ion beams. An overview of these facilities and recent results from the diverse program of nuclear structure and fundamental interaction studies they support is presented

[en] The low-energy structures of the radioactive nuclei ^20,21Na have been examined using Coulomb excitation at the TRIUMF-ISAC radioactive ion beam facility. Beams of ∝5 x 10⁶ ions/s were accelerated to 1.7 MeV/A and Coulomb excited in a 0.5 mg/cm ^2natTi target. Two TIGRESS HPGe clover detectors perpendicular to the beam axis were used for γ -ray detection, while scattered nuclei were observed by the Si detector BAMBINO. For ²¹Na, Coulomb excitation from the 3/2⁺ ground state to the first excited 5/2⁺ state was observed, while for ²⁰Na, Coulomb excitation was observed from the 2⁺ ground state to the first excited 3⁺ and 4⁺ states. For both beams, B (λ L) values were determined using the 2⁺ → 0⁺ de-excitation in ⁴⁸Ti as a reference. The resulting B(E2) arrow up and down value for ²¹Na is 137±9 e²fm⁴, while the resulting B(λ L) arrow up and down values for ²⁰Na are 55±6 e²fm⁴ for the 3⁺ → 2⁺, 35.7±5.7 e² fm⁴ for the 4⁺ → 2⁺, and 0.154±0.030 μ_N² for the 4⁺→3⁺ transitions. This analysis significantly improves the measurement of the ²¹Na B(E2) value, and provides the first experimental determination of B(λ L) values for the proton dripline nucleus ²⁰Na. (orig.)