Hyperfine Structures and Anomaly of Li6 and Li7, and the Hyperfine Structures of Re186 and Re188The atomic-beam magnetic-resonance flop-in technique was used to determine the hyperfine-structure separations and the hyperfine-structure anomaly between the isotopes Li/sup 6/ and Li/sup 7/; this technique was also used to measure the hyperfine-structure separations of the isotopes Re/sup 186/ and Re/ sup 188/. The separated-oscillatory-field method of Ramsey was used to very accurately determine the hyperfinestructure separations in Li/sup 6/ and Li/sup 7/ . The hyperfine-structure anomaly was determined using the separation values. The magnetic-dipole-interaction constant and the electricquadrupole-interaction constant were measured for the two radioactive isotopes of rhenium in the J = 5/2 ground state. Beams were produced by electron bombardment of irradiated rhenium wires. The spins of both isotopes were determined previously to be one. The nuclear moments of both isotopes were determined to be positive. An improved value for the electronic Lande g factor for rhenium was also obtained, with the result g = -1.95203(8). |
Common terms and phrases
amplifier angular approximation atom atomic-beam machine Bohr-Weisskopf Breit-Rabi diagram buffer chamber calculated calibration oven Correction voltage Coulombic counter Counts/min Crystal Oscillator diagonalize diffusion pump dipole Dirac Dirac equation direct transitions electron bombardment external field factor frequency errors given in Fig H₂ Hamiltonian Hewlett-Packard model hotwire Hotwire detector hyperfine structure determination HYPERFINE-3 hyperfine-structure anomaly hyperfine-structure energy due hyperfine-structure separations hypernom plates interaction constant isotopes isotopes of rhenium Lawrence Radiation Laboratory lithium experiment lps 1 evacuates M₂ magnetic field magnetic-dipole Mc/sec multipole multipole moment observed obtain orbital Oscilloscope output oven and buffer oven loader oven-loader perturbing Hamiltonian Phase detector potential protons quantum numbers radiofrequency hairpin radiofrequency system rhenium experiment rhenium wire Russell-Saunders Russell-Saunders coupling shown in Fig signal spherically spin stopwire structure anomaly structure separation syncriminator tantalum term tion transition frequency U(r₁ vector potential W₁ wavefunctions Welsch Δν пе